:root{--bg:#08080f;--bg2:#0f0f1a;--bg3:#141424;--bg4:#1a1a2e;--border:rgba(255,255,255,0.07);--border2:rgba(255,255,255,0.12);--purple:#7c3aed;--purple2:#6d28d9;--purple-light:#a78bfa;--blue:#3b82f6;--cyan:#06b6d4;--success:#10b981;--error:#ef4444;--warning:#f59e0b;--text:#f1f5f9;--text-dim:#94a3b8;--text-muted:#475569;--radius:14px}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
a{color:var(--purple-light);text-decoration:none}
a:hover{text-decoration:underline}

/* NAV */
nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:all .3s}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 40px;height:66px;display:flex;align-items:center;justify-content:space-between}
nav.scrolled{background:rgba(8,8,15,0.92);backdrop-filter:blur(24px);border-bottom:1px solid var(--border);box-shadow:0 4px 32px rgba(0,0,0,0.5)}
.nav-logo{font-size:21px;font-weight:900;color:#fff;letter-spacing:2px;flex-shrink:0}
.nav-logo span{color:var(--purple-light);text-shadow:0 0 20px rgba(167,139,250,0.5)}
.nav-links{display:flex;gap:32px;align-items:center}
.nav-links a{color:var(--text-dim);font-size:14px;font-weight:500;transition:color .2s}
.nav-links a:hover{color:#fff;text-decoration:none}
.nav-actions{display:flex;gap:12px;align-items:center}
.nav-link-btn{color:var(--text-dim);font-size:14px;font-weight:500;transition:color .2s}
.nav-link-btn:hover{color:#fff;text-decoration:none}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;transition:all .25s;border:none;text-decoration:none;white-space:nowrap}
.btn-sm{padding:9px 18px;font-size:13px;border-radius:9px}
.btn-lg{padding:15px 32px;font-size:15px;border-radius:12px}
.btn-primary{background:linear-gradient(135deg,var(--purple),var(--blue));color:#fff;box-shadow:0 4px 20px rgba(124,58,237,0.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(124,58,237,0.5);text-decoration:none;color:#fff}
.btn-ghost{background:transparent;color:var(--text-dim);border:1px solid var(--border2)}
.btn-ghost:hover{background:rgba(255,255,255,0.06);color:#fff;border-color:rgba(255,255,255,0.2);text-decoration:none}
.btn-outline{background:transparent;color:#fff;border:1px solid var(--border2)}
.btn-outline:hover{background:rgba(255,255,255,0.06);border-color:rgba(255,255,255,0.2);text-decoration:none;color:#fff}
.btn-full{width:100%;justify-content:center}

/* HERO */
.hero{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:120px 40px 80px;position:relative;overflow:hidden;text-align:center}
.hero-glow{position:absolute;top:-20%;left:50%;transform:translateX(-50%);width:900px;height:600px;background:radial-gradient(ellipse,rgba(124,58,237,0.2) 0%,transparent 70%);pointer-events:none}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,0.022) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.022) 1px,transparent 1px);background-size:60px 60px;pointer-events:none;mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,black 0%,transparent 80%)}
.hero-content{position:relative;z-index:1;max-width:780px;margin:0 auto}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(124,58,237,0.08);border:1px solid rgba(124,58,237,0.2);border-radius:99px;padding:7px 16px;font-size:13px;color:var(--purple-light);margin-bottom:36px;font-weight:500;transition:all .2s}
.hero-badge:hover{background:rgba(124,58,237,0.15);text-decoration:none}
.badge-dot{width:6px;height:6px;background:var(--purple-light);border-radius:50%;animation:pulse 2s infinite;flex-shrink:0}
.badge-arrow{font-size:14px;opacity:.7}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.5)}}
.hero-title{font-size:68px;font-weight:900;line-height:1.06;letter-spacing:-2.5px;margin-bottom:24px;color:#fff}
.gradient-text{background:linear-gradient(135deg,#fff 0%,var(--purple-light) 50%,#60a5fa 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:18px;color:var(--text-dim);max-width:520px;margin:0 auto 40px;line-height:1.8}
.hero-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:28px}
.hero-os{display:flex;align-items:center;gap:8px;justify-content:center;font-size:13px;color:var(--text-muted)}
.os-tag{background:rgba(255,255,255,0.06);border:1px solid var(--border);border-radius:6px;padding:3px 10px;font-size:12px;color:var(--text-dim)}

/* MOCKUP */
.hero-mockup{position:relative;width:100%;max-width:1000px;margin:60px auto 0;z-index:1}
.mockup-window{background:var(--bg2);border:1px solid var(--border2);border-radius:16px;overflow:hidden;box-shadow:0 40px 120px rgba(0,0,0,0.7),0 0 0 1px rgba(255,255,255,0.05)}
.mockup-titlebar{background:var(--bg3);padding:12px 16px;display:flex;align-items:center;gap:8px;border-bottom:1px solid var(--border)}
.mockup-titlebar .dot{width:12px;height:12px;border-radius:50%}
.dot.red{background:#ff5f57}.dot.yellow{background:#febc2e}.dot.green{background:#28c840}
.mockup-title{font-size:13px;color:var(--text-muted);margin-left:auto;margin-right:auto}
.mockup-body{display:grid;grid-template-columns:160px 1fr 280px;height:340px}
.mockup-sidebar{background:var(--bg3);border-right:1px solid var(--border);padding:12px 0;font-size:12px}
.sb-item{padding:6px 14px;color:var(--text-muted);cursor:pointer}
.sb-item.active{background:rgba(124,58,237,0.12);color:var(--purple-light)}
.mockup-editor{padding:16px 20px;font-family:'Fira Code','Courier New',monospace;font-size:13px;overflow:hidden;line-height:1.8;border-right:1px solid var(--border)}
.code-line{display:flex;gap:12px;white-space:nowrap}
.ln{color:var(--text-muted);min-width:16px;text-align:right;user-select:none;opacity:.5}
.kw{color:#c792ea}.fn{color:#82aaff}.nm{color:#f8f8f2}.st{color:#c3e88d}.pu{color:#89ddff}.cm{color:var(--text-muted);font-style:italic}
.ai-suggest{background:rgba(124,58,237,0.08);border-radius:4px}
.ghost{opacity:.35}
.cursor-blink{animation:blink .9s step-end infinite}
@keyframes blink{50%{opacity:0}}
.mockup-chat{display:flex;flex-direction:column;font-size:13px}
.chat-header{padding:12px 16px;font-size:12px;font-weight:700;color:var(--purple-light);border-bottom:1px solid var(--border);background:var(--bg3);letter-spacing:.5px}
.chat-msg{padding:10px 14px;font-size:13px;color:var(--text-dim);line-height:1.6}
.chat-msg.ai{color:var(--text)}
.chat-code{margin:0 10px;background:var(--bg3);border-radius:8px;padding:10px 12px;font-family:monospace;font-size:12px;color:#c3e88d;border:1px solid var(--border)}
.chat-code pre{white-space:pre-wrap}
.chat-input-bar{margin-top:auto;padding:12px 14px;border-top:1px solid var(--border);color:var(--text-muted);font-size:13px;background:var(--bg3)}
.mockup-glow{position:absolute;bottom:-60px;left:50%;transform:translateX(-50%);width:600px;height:100px;background:radial-gradient(ellipse,rgba(124,58,237,0.25) 0%,transparent 70%);pointer-events:none}