@import url(https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css);

:root{--c-brand: #197832;--c-brand-light: #f0fdf4;--c-brand-border: #bbf7d0;--c-slate-900: #0f172a;--c-slate-600: #475569;--c-slate-400: #94a3b8;--c-slate-200: #e2e8f0;--c-bg: #ffffff;
--card-height: 60vh;--stack-top: 10vh;}
html{scroll-behavior: auto;}
body{margin: 0;padding: 0;font-family: 'Inter', sans-serif;background-color: var(--c-bg);color: var(--c-slate-600);line-height: 1.6;-webkit-font-smoothing: antialiased;overflow-x: hidden;}
*,*::before,*::after{box-sizing: border-box;}
.container{max-width: 1200px;margin: 0 auto;padding: 0 24px;width: 100%;}
.header-section{padding: 80px 0 50px;text-align: left;max-width: 100%;}
.brand-tag{display: inline-flex;align-items: center;gap: 10px;color: var(--c-brand);font-weight: 800;text-transform: uppercase;letter-spacing: 0.05em;font-size: 0.85rem;background: var(--c-brand-light);padding: 6px 12px;border-radius: 4px;border-left: 4px solid var(--c-brand);margin-bottom: 20px;font-family: 'Inter', sans-serif;}
h1{font-family: 'Plus Jakarta Sans', sans-serif;font-size: clamp(28px, 4vw, 42px);font-weight: 800;color: var(--c-slate-900);margin: 0 0 16px;line-height: 1.2;}
.subtitle{font-size: 1.05rem;max-width: 700px;color: var(--c-slate-600);margin: 0;}
.stack-layout{display: grid;grid-template-columns: 1.2fr 0.9fr;gap: 60px;position: relative;padding-bottom: 20vh;align-items: start;}
.left-cards-wrapper{position: relative;min-width: 0;}
.layer-card{position: sticky;top: var(--stack-top);height: var(--card-height);min-height: 450px;margin-bottom: 60px;background: white;border: 1px solid var(--c-slate-200);border-radius: 20px;box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.01);overflow: hidden;display: flex;flex-direction: column;justify-content: center;align-items: center;z-index: 10;}
.card-visual{width: 100%;height: 100%;display: flex;flex-direction: column;align-items: center;justify-content: center;position: relative;background: linear-gradient(to bottom, #fff, #f8fafc);padding: 30px;text-align: center;}
.layer-graphic{width: 150px;height: 150px;border-radius: 20px;display: flex;align-items: center;justify-content: center;font-size: 3.5rem;color: white;box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.25);position: relative;transform: rotateX(10deg) rotateY(-10deg);transition: transform 0.5s ease;margin-bottom: 24px;border: 1px solid rgba(255, 255, 255, 0.2);}
.layer-number-bg{position: absolute;font-family: 'Plus Jakarta Sans', sans-serif;font-size: 10rem;font-weight: 800;color: var(--c-slate-900);opacity: 0.03;z-index: 0;top: 50%;left: 50%;transform: translate(-50%, -50%);pointer-events: none;}
#card-1 .layer-graphic{background: linear-gradient(135deg, #22c55e, #166534);}
#card-2 .layer-graphic{background: linear-gradient(135deg, #64748b, #334155);}
#card-3 .layer-graphic{background: linear-gradient(135deg, #f59e0b, #b45309);}
#card-4 .layer-graphic{background: linear-gradient(135deg, #f97316, #c2410c);}
#card-5 .layer-graphic{background: linear-gradient(135deg, #f8fafc, #e2e8f0);color: #475569;border: 4px solid #cbd5e1;}
#card-6 .layer-graphic{background: linear-gradient(135deg, #475569, #1e293b);}
#card-7 .layer-graphic{background: linear-gradient(135deg, #334155, #0f172a);background-image: radial-gradient(#64748b 1px, transparent 1px);background-size: 12px 12px;}
.card-label{font-family: 'Plus Jakarta Sans', sans-serif;font-size: 15px;font-weight: 700;letter-spacing: 1px;text-transform: uppercase;color: var(--c-slate-400);z-index: 1;}
.right-info-wrapper{position: relative;height: 100%;min-width: 0;}
.sticky-info-container{position: sticky;top: var(--stack-top);display: flex;flex-direction: column;gap: 8px;width: 100%;max-height: 85vh;overflow-y: auto;scrollbar-width: none;padding-right: 4px;}
.sticky-info-container::-webkit-scrollbar{display: none;}
.info-item{padding: 12px 20px;background: transparent;border: 1px solid transparent;border-radius: 8px;transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);cursor: pointer;position: relative;}
.info-item:hover{background: white;border-color: var(--c-slate-200);box-shadow: 0 2px 4px -1px rgba(0, 0, 0, 0.05);}
.info-item.active{background: white;border-color: var(--c-brand-border);box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);border-left: 4px solid var(--c-brand);padding: 18px 24px;border-radius: 12px;}
.info-header{display: flex;align-items: center;justify-content: space-between;}
.info-title{font-family: 'Plus Jakarta Sans', sans-serif;font-size: 0.95rem;font-weight: 600;color: var(--c-slate-900);transition: color 0.3s ease;}
.info-item.active .info-title{color: var(--c-brand);font-size: 1.05rem;font-weight: 700;}
.layer-idx{font-size: 0.75rem;font-weight: 700;color: var(--c-slate-400);background: var(--c-slate-200);padding: 2px 6px;border-radius: 4px;}
.info-item.active .layer-idx{background: var(--c-brand-light);color: var(--c-brand);}
.info-detail{max-height: 0;overflow: hidden;opacity: 0;transition: all 0.3s ease;}
.info-item.active .info-detail{max-height: 200px;opacity: 1;margin-top: 12px;padding-top: 12px;border-top: 1px dashed var(--c-slate-200);}
.info-desc{font-size: 0.9rem;color: var(--c-slate-600);margin-bottom: 8px;line-height: 1.5;}
.pain-point-pill{display: inline-flex;align-items: center;gap: 6px;background-color: #fff1f2;color: #9f1239;font-size: 0.8rem;font-weight: 600;padding: 4px 10px;border-radius: 6px;margin-top: 2px;}
.pain-point-pill.solved{background-color: var(--c-brand-light);color: var(--c-brand);border: 1px solid var(--c-brand-border);}
.pain-point-pill i{font-size: 12px;}
@media (max-width: 991px){.scroll-cue{height: 22vh;}
.header-section{padding: 60px 0 40px;}
.stack-layout{grid-template-columns: 1fr;gap: 28px;padding-bottom: 10vh;}
.right-info-wrapper{display: none;}
.layer-card{position: relative;top: 0;height: auto;min-height: auto;margin-bottom: 20px;padding: 40px 24px;}
.layer-card:last-child{margin-bottom: 0;}
.layer-graphic{width: 120px;height: 120px;font-size: 2.75rem;margin-bottom: 18px;}
.layer-number-bg{font-size: 7rem;}
.mobile-content{display: block !important;margin-top: 24px;text-align: center;border-top: 1px solid var(--c-slate-200);padding-top: 24px;width: 100%;}
.mobile-content h3{font-family: 'Plus Jakarta Sans', sans-serif;font-size: 1.25rem;font-weight: 700;color: var(--c-slate-900);margin: 0 0 10px 0;}
.mobile-content .info-desc{font-size: 0.9rem;margin: 0 0 12px;color: var(--c-slate-600);}
}
@media (max-width: 480px){.scroll-cue{height: 16vh;}
.container{padding: 0 18px;}
.header-section{padding: 44px 0 32px;}
.brand-tag{font-size: 0.78rem;padding: 5px 10px;}
.subtitle{font-size: 0.98rem;}
.stack-layout{gap: 20px;padding-bottom: 8vh;}
.layer-card{padding: 32px 18px;margin-bottom: 16px;border-radius: 16px;}
.layer-graphic{width: 96px;height: 96px;font-size: 2.25rem;margin-bottom: 14px;}
.layer-number-bg{font-size: 5.5rem;}
.card-label{font-size: 13px;}
}
.mobile-content{display: none;}
@keyframes bounce{0%,20%,50%,80%,100%{transform: translateY(0);}
40%{transform: translateY(-8px);}
60%{transform: translateY(-4px);}
}
@media (prefers-reduced-motion: reduce){*{animation-duration: 0.001ms !important;animation-iteration-count: 1 !important;transition-duration: 0.001ms !important;}
.fa-arrow-down{animation: none !important;}
}