@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');
*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#0a0a0f;--bg2:#12121a;--card:#1a1a2e;--border:#2a2a3e;--text:#e4e4e7;--text2:#a1a1aa;--accent:#6366f1;--accent2:#8b5cf6;--glow:rgba(99,102,241,0.15);--nav-bg:rgba(10,10,15,0.8);--heading-grad:linear-gradient(135deg,#fff 0%,#a1a1aa 100%);--kb-bg:linear-gradient(145deg,#1e1e2e,#16161f);--key-bg:linear-gradient(145deg,#2a2a3e,#1a1a2e);--key-depth:#0c0c14;--key-shadow:rgba(0,0,0,0.5);--kb-depth:#08080c}
[data-theme="light"]{--bg:#f8fafc;--bg2:#f1f5f9;--card:#ffffff;--border:#e2e8f0;--text:#0f172a;--text2:#475569;--accent:#4f46e5;--accent2:#7c3aed;--glow:rgba(79,70,229,0.15);--nav-bg:rgba(248,250,252,0.8);--heading-grad:linear-gradient(135deg,#0f172a 0%,#475569 100%);--kb-bg:linear-gradient(145deg,#ffffff,#f1f5f9);--key-bg:linear-gradient(145deg,#ffffff,#e2e8f0);--key-depth:#cbd5e1;--key-shadow:rgba(0,0,0,0.15);--kb-depth:#94a3b8}
body{font-family:'Inter',sans-serif;background:var(--bg);color:var(--text);overflow-x:hidden;transition:background 0.3s, color 0.3s}
.theme-toggle{background:transparent;border:1px solid var(--border);color:var(--text);width:36px;height:36px;border-radius:10px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;margin-left:16px;}
.theme-toggle:hover{background:var(--glow);border-color:var(--accent)}
.theme-toggle .moon-icon{display:none}
[data-theme="light"] .theme-toggle .sun-icon{display:none}
[data-theme="light"] .theme-toggle .moon-icon{display:block}
a{text-decoration:none;color:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:16px 0;backdrop-filter:blur(20px);background:var(--nav-bg);border-bottom:1px solid var(--border);transition:all .3s}
.nav .container{display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800}
.nav-logo svg{width:28px;height:28px;color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:32px;list-style:none}
.nav-links a{font-size:14px;color:var(--text2);transition:color .2s;position:relative}
.nav-links a:hover{color:var(--text)}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--accent);transition:width .3s}
.nav-links a:hover::after{width:100%}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 24px;border-radius:12px;font-size:14px;font-weight:600;cursor:pointer;border:none;transition:all .3s}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;box-shadow:0 4px 20px var(--glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(99,102,241,0.3)}
.btn-outline{background:transparent;color:var(--text);border:1px solid var(--border)}
.btn-outline:hover{border-color:var(--accent);background:var(--glow)}
.btn-white{background:#fff;color:#111;font-weight:700}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(255,255,255,0.15)}
.hero{min-height:100vh;display:flex;align-items:center;padding-top:80px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;background:var(--glow);border:1px solid var(--border);border-radius:100px;font-size:13px;color:var(--accent);margin-bottom:24px}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{font-size:56px;font-weight:900;line-height:1.1;margin-bottom:20px;background:var(--heading-grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero h1 span{background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:18px;color:var(--text2);line-height:1.7;margin-bottom:32px;max-width:500px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:32px;margin-top:40px}
.hero-stat .num{font-size:28px;font-weight:800;background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-stat .label{font-size:12px;color:var(--text2);margin-top:4px}
.kb-scene{perspective:800px;width:100%;display:flex;justify-content:center}
.kb-wrap{transform:rotateX(15deg) rotateY(-10deg);transition:transform .5s}
.kb-wrap:hover{transform:rotateX(5deg) rotateY(-5deg)}
.keyboard{background:var(--kb-bg);border-radius:16px;padding:24px;box-shadow:inset 0 2px 0 rgba(255,255,255,0.03),0 10px 0 var(--kb-depth),0 40px 60px rgba(0,0,0,0.3),0 0 80px var(--glow);border:1px solid var(--border);transform:translateZ(20px)}
.kb-row{display:flex;gap:8px;margin-bottom:8px;justify-content:center}
.key{--w:var(--wave, 0);width:44px;height:44px;background:var(--key-bg);border:1px solid color-mix(in srgb, var(--accent) calc(var(--w) * 100%), var(--border));border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:color-mix(in srgb, #fff calc(var(--w) * 100%), var(--text2));transition:transform 0.1s cubic-bezier(0.4,0,0.2,1), box-shadow 0.1s;position:relative;box-shadow:inset 0 1px 1px rgba(255,255,255,0.1),0 calc(5px + (var(--w) * 8px)) 0 var(--key-depth),0 calc(8px + (var(--w) * 8px)) calc(10px + (var(--w) * 15px)) var(--key-shadow),0 0 calc(var(--w) * 30px) var(--glow);transform:translateY(calc(-5px - (var(--w) * 8px)));user-select:none;will-change:transform, box-shadow}
.key::before{content:'';position:absolute;inset:0;border-radius:7px;background:linear-gradient(135deg,var(--accent),var(--accent2));opacity:calc(var(--w) * 0.4);pointer-events:none}
.key::after{content:'';position:absolute;inset:2px;border-radius:6px;background:linear-gradient(to bottom, rgba(255,255,255,0.15) 0%, transparent 100%);pointer-events:none;opacity:calc(1 + var(--w))}
.key.active{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;border-color:var(--accent);box-shadow:inset 0 2px 4px rgba(0,0,0,0.2),0 1px 0 var(--key-depth),0 2px 4px var(--key-shadow),0 0 20px var(--glow);transform:translateY(0px) !important}
.key.active::after,.key.active::before{background:none;opacity:0}
.key.space{width:220px}
.key.wide{width:70px}
.typing-demo{margin-top:24px;padding:16px 24px;background:var(--card);border:1px solid var(--border);border-radius:12px;font-family:'Courier New',monospace;font-size:16px;overflow:hidden}
.typing-demo .cursor{display:inline-block;width:2px;height:20px;background:var(--accent);animation:blink .8s infinite;vertical-align:middle;margin-left:2px}
@keyframes blink{0%,50%{opacity:1}51%,100%{opacity:0}}
.typed-text{color:var(--accent)}
.untyped-text{color:var(--text2)}
.features{padding:120px 0}
.section-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;background:var(--glow);border:1px solid var(--border);border-radius:100px;font-size:13px;color:var(--accent);margin-bottom:16px}
.section-title{font-size:40px;font-weight:800;margin-bottom:16px}
.section-sub{font-size:16px;color:var(--text2);max-width:600px;line-height:1.6}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:60px}
.feature-card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:32px;transition:all .3s;overflow:hidden;position:relative}
.feature-card:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:0 20px 40px rgba(0,0,0,0.3)}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--accent),transparent);opacity:0;transition:opacity .3s}
.feature-card:hover::before{opacity:1}
.feature-icon{width:48px;height:48px;border-radius:12px;background:var(--glow);display:flex;align-items:center;justify-content:center;margin-bottom:20px;color:var(--accent)}
.feature-card h3{font-size:18px;font-weight:700;margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--text2);line-height:1.6}
.cta{padding:120px 0;text-align:center}
.cta-box{background:linear-gradient(135deg,var(--accent),var(--accent2));border-radius:24px;padding:80px 40px;overflow:hidden;position:relative}
.cta-box::before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E")}
.cta-box h2{font-size:40px;font-weight:800;color:#fff;margin-bottom:16px;position:relative}
.cta-box p{font-size:18px;color:rgba(255,255,255,0.85);margin-bottom:32px;position:relative}
.cta-btns{display:flex;justify-content:center;gap:16px;position:relative;flex-wrap:wrap}
.footer{padding:60px 0 30px;border-top:1px solid var(--border)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand h3{font-size:20px;font-weight:800;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.footer-brand p{font-size:14px;color:var(--text2);line-height:1.6}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:16px}
.footer-col a{display:block;font-size:13px;color:var(--text2);margin-bottom:10px;transition:color .2s}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid var(--border);padding-top:24px;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--text2)}
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.7);backdrop-filter:blur(8px);z-index:200;display:none;justify-content:center;align-items:center;padding:20px}
.modal-overlay.active{display:flex}
.modal{background:var(--bg2);border:1px solid var(--border);border-radius:20px;max-width:900px;width:100%;max-height:90vh;overflow-y:auto;padding:40px;position:relative}
.modal-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:10px;border:1px solid var(--border);background:var(--card);color:var(--text);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:18px;transition:all .2s}
.modal-close:hover{background:var(--accent);border-color:var(--accent)}
.modal h2{font-size:28px;font-weight:800;margin-bottom:8px}
.modal .sub{color:var(--text2);margin-bottom:32px;font-size:15px}
.plans-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:24px}
.plan-card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:24px;text-align:center;transition:all .3s;cursor:pointer}
.plan-card:hover,.plan-card.selected{border-color:var(--accent);box-shadow:0 0 30px var(--glow)}
.plan-card.popular{border-color:var(--accent);position:relative}
.plan-card.popular::before{content:'POPULAR';position:absolute;top:-10px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;font-size:10px;font-weight:700;padding:3px 12px;border-radius:100px}
.plan-card h3{font-size:16px;font-weight:700;margin-bottom:8px}
.plan-price{font-size:32px;font-weight:900;margin-bottom:4px}
.plan-period{font-size:12px;color:var(--text2);margin-bottom:16px}
.plan-features{text-align:left;font-size:13px;color:var(--text2)}
.plan-features li{margin-bottom:6px;padding-left:20px;position:relative;list-style:none}
.plan-features li::before{content:'✓';position:absolute;left:0;color:var(--accent)}
.coupon-box{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px;margin-top:16px}
.coupon-box h4{font-size:14px;font-weight:600;margin-bottom:12px}
.coupon-input{display:flex;gap:8px}
.coupon-input input{flex:1;padding:10px 16px;background:var(--bg);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:14px;outline:none}
.coupon-input input:focus{border-color:var(--accent)}
.coupon-msg{margin-top:10px;font-size:13px;padding:8px 12px;border-radius:8px;display:none}
.coupon-msg.show{display:block}
.coupon-msg.success{background:rgba(34,197,94,0.1);color:#22c55e;border:1px solid rgba(34,197,94,0.2)}
.coupon-msg.error{background:rgba(239,68,68,0.1);color:#ef4444;border:1px solid rgba(239,68,68,0.2)}
.download-btn{display:none;margin-top:12px}
.download-btn.show{display:inline-flex}
.glow-orb{position:absolute;border-radius:50%;filter:blur(80px);pointer-events:none;opacity:.4}
.glow-1{width:400px;height:400px;background:var(--accent);top:-100px;right:-100px}
.glow-2{width:300px;height:300px;background:var(--accent2);bottom:-50px;left:-50px}
@media(max-width:768px){
.hero-grid{grid-template-columns:1fr;text-align:center}
.hero h1{font-size:36px}
.hero p{margin:0 auto 24px}
.hero-btns{justify-content:center}
.hero-stats{justify-content:center}
.kb-scene{display:none}
.features-grid{grid-template-columns:1fr}
.plans-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr 1fr}
.nav-links{display:none}
.footer-bottom{flex-direction:column;gap:8px;text-align:center}
}