:root{--color-primary: #DC143C;--color-primary-hover: #C41235;--color-primary-active: #9E0D2A;--color-primary-soft: #FFF1F3;--color-primary-border: #FFE4E8;--color-primary-muted: rgba(220, 20, 60, .08);--color-canvas: #FAFAFA;--color-surface-white: #FFFFFF;--color-surface-subtle: #F4F4F5;--color-surface-elevated: #FFFFFF;--color-dark-slate: #09090B;--color-dark-surface: #18181B;--color-border: #E4E4E7;--color-border-subtle: #F4F4F5;--color-border-strong: #D4D4D8;--color-text-title: #09090B;--color-text-body: #3F3F46;--color-text-muted: #71717A;--color-text-subtle: #A1A1AA;--color-text-white: #FFFFFF;--color-success: #16A34A;--color-success-soft: #F0FDF4;--color-success-border: #BBF7D0;--color-warning: #D97706;--color-warning-soft: #FFFBEB;--color-warning-border: #FDE68A;--color-danger: #DC2626;--color-danger-soft: #FEF2F2;--color-danger-border: #FECACA;--color-info: #2563EB;--color-info-soft: #EFF6FF;--color-info-border: #BFDBFE;--font-sans: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-serif: "Fraunces", Georgia, "Times New Roman", serif;--font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, Monaco, Consolas, monospace;--text-2xs: .6875rem;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-md: 1.125rem;--text-lg: 1.25rem;--text-xl: 1.5rem;--text-2xl: 1.875rem;--text-3xl: 2.25rem;--text-4xl: 3rem;--text-5xl: 3.75rem;--sp-1: .25rem;--sp-2: .5rem;--sp-3: .75rem;--sp-4: 1rem;--sp-5: 1.25rem;--sp-6: 1.5rem;--sp-8: 2rem;--sp-10: 2.5rem;--sp-12: 3rem;--sp-16: 4rem;--sp-20: 5rem;--sp-24: 6rem;--radius-xs: 4px;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-2xl: 20px;--radius-full: 9999px;--shadow-subtle: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-card: 0 1px 3px 0 rgba(0, 0, 0, .04), 0 1px 2px -1px rgba(0, 0, 0, .04);--shadow-float: 0 12px 28px -6px rgba(0, 0, 0, .06), 0 6px 12px -4px rgba(0, 0, 0, .03);--shadow-elevated: 0 20px 32px -10px rgba(0, 0, 0, .1);--ease-standard: cubic-bezier(.16, 1, .3, 1);--duration-fast: .15s;--duration-normal: .25s}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);font-size:var(--text-base);color:var(--color-text-body);background:var(--color-canvas);line-height:1.55;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font-family:inherit}@keyframes fadeIn{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInScale{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes floatSlow{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}@keyframes pulseGlow{0%,to{box-shadow:0 0 #dc143c66}50%{box-shadow:0 0 0 12px #dc143c00}}@keyframes tickerAnimation{0%{transform:translate(0)}to{transform:translate(-50%)}}.animate-fade-in{animation:fadeIn .6s var(--transition-base) forwards}.animate-float{animation:floatSlow 4s ease-in-out infinite}.animate-pulse-glow{animation:pulseGlow 2.5s infinite}.landing-container{width:100%;max-width:1180px;margin:0 auto;padding:0 var(--sp-6)}.section-spacing{padding:var(--sp-20) 0}@media(max-width:768px){.section-spacing{padding:var(--sp-12) 0}.landing-container{padding:0 var(--sp-4)}}.section-tag{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;background:var(--color-surface-subtle);color:var(--color-text-title);border:1px solid var(--color-border);border-radius:var(--radius-full);font-size:var(--text-xs);font-weight:600;letter-spacing:-.01em;margin-bottom:var(--sp-3)}.section-tag-crimson{background:var(--color-primary-soft);color:var(--color-primary);border-color:var(--color-primary-border)}.heading-hero{font-size:clamp(2.35rem,4.8vw,3.85rem);font-weight:800;color:var(--color-text-title);letter-spacing:-.04em;line-height:1.08}.heading-section{font-size:clamp(1.85rem,3.5vw,2.6rem);font-weight:800;color:var(--color-text-title);letter-spacing:-.03em;line-height:1.15}.heading-card{font-size:var(--text-lg);font-weight:700;color:var(--color-text-title);letter-spacing:-.02em}.text-lead{font-size:clamp(1.05rem,1.8vw,1.25rem);color:var(--color-text-muted);line-height:1.6}.text-center{text-align:center}.font-editorial{font-family:var(--font-serif);font-style:italic;font-weight:500;letter-spacing:-.01em}.text-crimson{color:var(--color-primary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:var(--text-sm);border-radius:var(--radius-sm);padding:0 16px;height:40px;transition:all var(--duration-fast) var(--ease-standard);cursor:pointer;border:1px solid transparent;white-space:nowrap;-webkit-user-select:none;user-select:none}.btn-primary{background:var(--color-primary);color:var(--color-text-white);border-color:var(--color-primary);box-shadow:0 1px 2px #dc143c33}.btn-primary:hover{background:var(--color-primary-hover);border-color:var(--color-primary-hover)}.btn-primary:active{background:var(--color-primary-active)}.btn-secondary{background:var(--color-surface-white);color:var(--color-text-title);border-color:var(--color-border);box-shadow:var(--shadow-subtle)}.btn-secondary:hover{background:var(--color-surface-subtle);border-color:var(--color-border-strong)}.btn-ghost{background:transparent;color:var(--color-text-muted)}.btn-ghost:hover{background:var(--color-surface-subtle);color:var(--color-text-title)}.btn-lg{height:46px;padding:0 22px;font-size:var(--text-base);border-radius:var(--radius-md)}.btn-sm{height:32px;padding:0 12px;font-size:var(--text-xs)}.panel{background:var(--color-surface-white);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--sp-6);box-shadow:var(--shadow-card)}.panel-interactive{transition:border-color var(--duration-fast),box-shadow var(--duration-fast),transform var(--duration-fast)}.panel-interactive:hover{border-color:var(--color-border-strong);box-shadow:var(--shadow-float);transform:translateY(-2px)}.mono{font-family:var(--font-mono)}.concept-tag{display:inline-flex;align-items:center;gap:4px;padding:2px 6px;background:var(--color-surface-subtle);border:1px solid var(--color-border);border-radius:var(--radius-xs);font-size:11px;font-family:var(--font-mono);color:var(--color-text-title)}.step-item{position:relative;display:flex;gap:var(--sp-4)}.step-num{width:28px;height:28px;border-radius:50%;background:var(--color-surface-subtle);border:1.5px solid var(--color-border);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:12px;color:var(--color-text-title);flex-shrink:0}.step-num.active{background:var(--color-primary-soft);border-color:var(--color-primary);color:var(--color-primary)}