:root{--bg: #0a0a0a;--bg-card: rgba(255, 255, 255, .05);--bg-card-border: rgba(255, 255, 255, .1);--text: #f0f0f0;--text-muted: #888;--accent: #00d4ff;--accent-glow: rgba(0, 212, 255, .3);--footer-bg: rgba(0, 0, 0, .8);--loader-bg: #0a0a0a;--toggle-bg: rgba(255, 255, 255, .1);--toggle-hover: rgba(255, 255, 255, .2);--scene-bg: #0a0a0a;--font-main: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;--font-display: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;--section-height: 100vh;--content-max-width: 600px;--card-radius: 16px;--card-padding: 2rem}[data-theme=light]{--bg: #fafafa;--bg-card: rgba(0, 0, 0, .03);--bg-card-border: rgba(0, 0, 0, .1);--text: #1a1a1a;--text-muted: #666;--accent: #0066cc;--accent-glow: rgba(0, 102, 204, .2);--footer-bg: rgba(255, 255, 255, .9);--loader-bg: #fafafa;--toggle-bg: rgba(0, 0, 0, .08);--toggle-hover: rgba(0, 0, 0, .15);--scene-bg: #f0f0f0}[data-theme=nature]{--bg: #1a1d16;--bg-card: rgba(122, 182, 72, .08);--bg-card-border: rgba(122, 182, 72, .2);--text: #e8dcc8;--text-muted: #a09880;--accent: #7ab648;--accent-glow: rgba(122, 182, 72, .25);--footer-bg: rgba(26, 29, 22, .9);--loader-bg: #1a1d16;--toggle-bg: rgba(122, 182, 72, .15);--toggle-hover: rgba(122, 182, 72, .25);--scene-bg: #1a1d16}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:auto;-webkit-text-size-adjust:100%;font-size:16px}body{font-family:var(--font-main);background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color .5s ease,color .5s ease}#loader{position:fixed;top:0;right:0;bottom:0;left:0;z-index:9999;display:flex;align-items:center;justify-content:center;background:var(--loader-bg);transition:opacity .6s ease,visibility .6s ease}#loader.hidden{opacity:0;visibility:hidden;pointer-events:none}.loader-inner{text-align:center}.loader-bar{width:200px;height:3px;background:var(--bg-card-border);border-radius:2px;overflow:hidden;margin-bottom:1rem}.loader-bar:after{content:"";display:block;width:40%;height:100%;background:var(--accent);border-radius:2px;animation:loader-slide 1.2s ease-in-out infinite}@keyframes loader-slide{0%{transform:translate(-100%)}to{transform:translate(350%)}}.loader-text{font-size:.875rem;color:var(--text-muted);letter-spacing:.05em}#theme-toggle{position:fixed;top:1.25rem;right:1.25rem;z-index:1000;width:44px;height:44px;border:none;border-radius:12px;background:var(--toggle-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);color:var(--text);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .3s ease,transform .2s ease}#theme-toggle:hover{background:var(--toggle-hover);transform:scale(1.05)}#theme-toggle:active{transform:scale(.95)}#theme-toggle svg{display:none;width:20px;height:20px}[data-theme=dark] #theme-toggle .icon-dark,[data-theme=light] #theme-toggle .icon-light,[data-theme=nature] #theme-toggle .icon-nature{display:block}#tent-canvas{position:fixed;top:0;right:0;bottom:0;left:0;width:100%;height:100%;z-index:0;pointer-events:none}#scroll-container{position:relative;z-index:1}.section{min-height:var(--section-height);display:flex;align-items:center;justify-content:center;padding:2rem 1.5rem;position:relative}.section-content{max-width:var(--content-max-width);width:100%}.hero-content{text-align:center;display:flex;flex-direction:column;align-items:center;gap:1.5rem}.hero-title{font-family:var(--font-display);font-size:clamp(2.5rem,10vw,6rem);font-weight:800;line-height:1.05;letter-spacing:-.03em}.hero-line{display:block;opacity:0;transform:translateY(40px)}.hero-line-2{color:var(--accent)}.hero-subtitle{font-size:clamp(1rem,3vw,1.25rem);color:var(--text-muted);font-weight:400;letter-spacing:.1em;text-transform:uppercase;opacity:0;transform:translateY(20px)}.scroll-indicator{display:flex;flex-direction:column;align-items:center;gap:.5rem;color:var(--text-muted);font-size:.75rem;letter-spacing:.15em;text-transform:uppercase;opacity:0;animation:bounce-in .6s ease 1.5s forwards}.scroll-indicator svg{animation:bounce 2s ease-in-out infinite}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(8px)}}@keyframes bounce-in{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.info-card,.step-card{background:var(--bg-card);border:1px solid var(--bg-card-border);border-radius:var(--card-radius);padding:var(--card-padding);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);opacity:0;transform:translateY(40px)}.info-card h2,.step-card h2{font-family:var(--font-display);font-size:clamp(1.5rem,5vw,2rem);font-weight:700;margin-bottom:.75rem;letter-spacing:-.02em}.info-card p,.step-card p{font-size:clamp(.9375rem,2.5vw,1.0625rem);color:var(--text-muted);line-height:1.7}.info-card p strong,.step-card p strong{color:var(--accent);font-weight:600}.part-highlight{display:flex;align-items:baseline;gap:.75rem;margin-bottom:1rem}.part-count{font-family:var(--font-display);font-size:clamp(2.5rem,8vw,3.5rem);font-weight:800;color:var(--accent);line-height:1}.part-label{font-size:clamp(1.125rem,3vw,1.5rem);font-weight:600;color:var(--text)}.step-card{position:relative;padding-left:calc(var(--card-padding) + .5rem)}.step-number{font-family:var(--font-display);font-size:clamp(3rem,10vw,5rem);font-weight:900;color:var(--accent);opacity:.15;position:absolute;top:-.25rem;right:1.5rem;line-height:1;pointer-events:none;-webkit-user-select:none;user-select:none}.step-card:before{content:"";position:absolute;left:0;top:var(--card-padding);bottom:var(--card-padding);width:3px;background:var(--accent);border-radius:2px}#footer{min-height:50vh;display:flex;align-items:center;justify-content:center;padding:3rem 1.5rem;background:var(--footer-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.footer-content{text-align:center}.footer-catchphrase{font-family:var(--font-display);font-size:clamp(1.5rem,5vw,2.5rem);font-weight:800;color:var(--accent);margin-bottom:.5rem;letter-spacing:-.02em}.footer-brand{font-size:1rem;color:var(--text-muted);margin-bottom:1.5rem;letter-spacing:.05em}.footer-copy{font-size:.75rem;color:var(--text-muted);opacity:.6}@media(min-width:768px){:root{--content-max-width: 520px;--card-padding: 2.5rem}.section{padding:3rem 2rem}.section-content{margin-left:auto;margin-right:5%}.hero-content{margin:0 auto}}@media(min-width:1024px){:root{--content-max-width: 480px}.section-content{margin-right:8%}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}