:root{--color-primary: #1A2A5E;--color-primary-light: #2a3d7a;--color-text: #0D1429;--color-text-muted: #6B7280;--color-bg: #ffffff;--color-surface: #F1F5FA;--color-layout: #f4f6f9;--color-border: #E2E8F0;--color-focus: #3b82f6;--font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;--radius: 8px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .08);--shadow-md: 0 4px 12px rgba(0, 0, 0, .1);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .12);--nav-height: 64px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;scroll-padding-top:var(--nav-height)}body{font-family:var(--font-family);color:var(--color-text);background:var(--color-bg);line-height:1.6;-webkit-font-smoothing:antialiased}img{max-width:100%;display:block}a{color:inherit;text-decoration:none}ul{list-style:none}h1,h2,h3,h4{line-height:1.2;font-weight:700}h1{font-size:2.75rem}h2{font-size:2rem;margin-bottom:.5rem}h3{font-size:1.25rem}p{color:var(--color-text-muted)}.container{max-width:1200px;margin:0 auto;padding:0 24px}.section-header{text-align:center;max-width:640px;margin:0 auto 3rem}.section-header p{margin-top:.75rem;font-size:1.1rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;font-size:1rem;font-weight:600;border-radius:var(--radius);border:2px solid transparent;cursor:pointer;transition:background .2s,transform .15s,box-shadow .2s;font-family:var(--font-family)}.btn:hover{transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn-primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.btn-primary:hover{background:var(--color-primary-light);border-color:var(--color-primary-light);box-shadow:var(--shadow-md)}.btn-outline{background:transparent;color:var(--color-primary);border-color:var(--color-primary)}.btn-outline:hover{background:var(--color-primary);color:#fff}.btn-submit{width:100%;padding:14px 28px;font-size:1.05rem}.navbar{position:sticky;top:0;z-index:100;background:var(--color-bg);border-bottom:1px solid var(--color-border);box-shadow:var(--shadow-sm)}.navbar .container{display:flex;align-items:center;justify-content:space-between;height:var(--nav-height)}.nav-brand{display:flex;align-items:center;gap:10px;font-size:1.2rem;font-weight:700;color:var(--color-primary)}.nav-brand img{width:28px;height:28px}.nav-links{display:flex;align-items:center;gap:32px}.nav-links a:not(.btn){font-size:.95rem;font-weight:500;color:var(--color-text-muted);transition:color .2s}.nav-links a:not(.btn):hover{color:var(--color-primary)}.nav-links .btn{padding:8px 20px;font-size:.9rem}.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:4px;color:var(--color-text)}.hero{padding:80px 0 60px}.hero .container{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.hero-content h1{margin-bottom:1.25rem;color:var(--color-primary)}.hero-content p{font-size:1.2rem;margin-bottom:2rem;max-width:480px}.hero-buttons{display:flex;gap:16px;flex-wrap:wrap}.hero-visual{display:flex;justify-content:center}.hero-image{width:100%;max-width:560px;border-radius:12px;border:1px solid var(--color-border);box-shadow:var(--shadow-lg);cursor:pointer;transition:box-shadow .2s}.hero-image:hover{box-shadow:var(--shadow-lg),0 0 0 3px #1a2a5e26}.lightbox{display:none;position:fixed;top:0;right:0;bottom:0;left:0;z-index:200;background:#000c;align-items:center;justify-content:center;padding:24px;cursor:pointer}.lightbox.open{display:flex}.lightbox img{max-width:100%;max-height:90vh;border-radius:8px;box-shadow:0 0 40px #00000080;cursor:default}.lightbox-close{position:absolute;top:16px;right:24px;background:none;border:none;color:#fff;font-size:2rem;cursor:pointer;line-height:1;opacity:.8;transition:opacity .2s}.lightbox-close:hover{opacity:1}.features{padding:80px 0;background:var(--color-layout)}.features-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}.feature-card{background:var(--color-bg);border-radius:var(--radius);border:1px solid var(--color-border);padding:28px 24px;transition:transform .2s,box-shadow .2s}.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.feature-icon{width:44px;height:44px;background:var(--color-surface);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--color-primary)}.feature-icon svg{width:22px;height:22px}.feature-card h3{margin-bottom:8px;color:var(--color-text)}.feature-card p{font-size:.95rem;line-height:1.5}.highlights{padding:80px 0}.highlight-item{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;padding:40px 0}.highlight-item:not(:last-child){border-bottom:1px solid var(--color-border)}.highlight-item.reverse{direction:rtl}.highlight-item.reverse>*{direction:ltr}.highlight-text h3{font-size:1.5rem;margin-bottom:1rem;color:var(--color-primary)}.highlight-text p{font-size:1.05rem;margin-bottom:.75rem}.highlight-text ul{margin-top:1rem}.highlight-text li{position:relative;padding-left:24px;margin-bottom:8px;color:var(--color-text-muted);font-size:.95rem}.highlight-text li:before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:50%;background:var(--color-primary);opacity:.5}.highlight-visual{display:flex;justify-content:center}.highlight-image{width:100%;max-width:480px;border-radius:12px;border:1px solid var(--color-border);box-shadow:var(--shadow-md);cursor:pointer;transition:box-shadow .2s}.highlight-image:hover{box-shadow:var(--shadow-lg),0 0 0 3px #1a2a5e26}.visual-box{width:100%;max-width:420px;background:var(--color-layout);border-radius:12px;border:1px solid var(--color-border);padding:32px;display:flex;flex-direction:column;gap:16px}.visual-box-row{display:flex;gap:12px;align-items:center}.visual-box-circle{width:40px;height:40px;border-radius:50%;background:var(--color-primary);opacity:.15;flex-shrink:0}.visual-box-lines{flex:1;display:flex;flex-direction:column;gap:6px}.visual-box-line{height:8px;border-radius:4px;background:var(--color-border)}.visual-box-line:first-child{width:70%}.visual-box-line:nth-child(2){width:100%}.visual-box-block{width:100%;height:48px;border-radius:var(--radius);background:var(--color-primary);opacity:.08}.visual-box-bar-group{display:flex;align-items:flex-end;gap:8px;height:64px}.visual-box-bar{flex:1;border-radius:4px 4px 0 0;background:var(--color-primary);opacity:.2}.demo{padding:80px 0;background:var(--color-layout)}.demo .container{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}.demo-text h2{color:var(--color-primary)}.demo-text p{font-size:1.1rem;margin-top:1rem}.demo-text ul{margin-top:1.5rem}.demo-text li{position:relative;padding-left:28px;margin-bottom:12px;color:var(--color-text-muted)}.demo-text li:before{content:"";position:absolute;left:0;top:6px;width:16px;height:16px;border-radius:50%;border:2px solid var(--color-primary);opacity:.4}.demo-form{background:var(--color-bg);border-radius:12px;border:1px solid var(--color-border);padding:36px;box-shadow:var(--shadow-md)}.demo-form h3{margin-bottom:24px;font-size:1.3rem}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:6px;font-size:.9rem;font-weight:600;color:var(--color-text)}.form-group input,.form-group textarea{width:100%;padding:12px 14px;font-size:1rem;font-family:var(--font-family);border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-bg);color:var(--color-text);transition:border-color .2s,box-shadow .2s}.form-group textarea{resize:vertical;min-height:80px}.form-group input::-moz-placeholder,.form-group textarea::-moz-placeholder{color:#9ca3af}.form-group input::placeholder,.form-group textarea::placeholder{color:#9ca3af}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--color-focus);box-shadow:0 0 0 3px #3b82f626}.hp-field{position:absolute;left:-9999px;opacity:0;height:0;width:0;overflow:hidden;tab-index:-1}.footer{background:var(--color-primary);color:#ffffffd9;padding:48px 0 32px}.footer .container{display:flex;justify-content:space-between;align-items:start;gap:40px;flex-wrap:wrap}.footer-brand{font-size:1.15rem;font-weight:700;color:#fff;margin-bottom:8px}.footer-copy{font-size:.85rem;opacity:.7}.footer-links{display:flex;gap:28px}.footer-links a{font-size:.9rem;transition:color .2s}.footer-links a:hover{color:#fff}.chat-fab{position:fixed;bottom:24px;right:24px;z-index:150;width:56px;height:56px;border-radius:50%;background:var(--color-primary);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);transition:background .2s,transform .15s}.chat-fab:hover{background:var(--color-primary-light);transform:scale(1.05)}.chat-panel{position:fixed;bottom:24px;right:24px;z-index:150;width:380px;height:500px;background:var(--color-bg);border-radius:12px;border:1px solid var(--color-border);box-shadow:var(--shadow-lg);display:flex;flex-direction:column;overflow:hidden}.chat-header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;background:var(--color-primary);color:#fff;flex-shrink:0}.chat-header-title{font-weight:600;font-size:.95rem}.chat-close{background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;line-height:1;opacity:.8;transition:opacity .2s;padding:0 4px}.chat-close:hover{opacity:1}.chat-messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px}.chat-welcome{background:var(--color-surface);border-radius:var(--radius);padding:14px;font-size:.9rem}.chat-welcome p{color:var(--color-text-muted);margin:0}.chat-bubble{max-width:85%;padding:10px 14px;border-radius:12px;font-size:.9rem;line-height:1.5;word-wrap:break-word;white-space:pre-wrap}.chat-bubble-user{align-self:flex-end;background:var(--color-primary);color:#fff;border-bottom-right-radius:4px}.chat-bubble-assistant{align-self:flex-start;background:var(--color-surface);color:var(--color-text);border-bottom-left-radius:4px}.chat-typing{display:flex;gap:4px;padding:4px 0}.chat-dot{width:6px;height:6px;border-radius:50%;background:var(--color-text-muted);animation:chatBounce 1.4s infinite ease-in-out both}.chat-dot:nth-child(1){animation-delay:-.32s}.chat-dot:nth-child(2){animation-delay:-.16s}@keyframes chatBounce{0%,80%,to{transform:scale(.6);opacity:.4}40%{transform:scale(1);opacity:1}}.chat-input-area{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--color-border);background:var(--color-bg);flex-shrink:0}.chat-input{flex:1;padding:10px 12px;font-size:.9rem;font-family:var(--font-family);border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-bg);color:var(--color-text);transition:border-color .2s}.chat-input:focus{outline:none;border-color:var(--color-focus)}.chat-input::-moz-placeholder{color:#9ca3af}.chat-input::placeholder{color:#9ca3af}.chat-send{width:38px;height:38px;border-radius:var(--radius);background:var(--color-primary);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .2s}.chat-send:hover:not(:disabled){background:var(--color-primary-light)}.chat-send:disabled{opacity:.5;cursor:not-allowed}@media(max-width:1024px){h1{font-size:2.25rem}.hero .container,.highlight-item,.demo .container{gap:40px}}@media(max-width:768px){h1{font-size:2rem}h2{font-size:1.65rem}.nav-links{display:none;flex-direction:column;position:absolute;top:var(--nav-height);left:0;right:0;background:var(--color-bg);border-bottom:1px solid var(--color-border);box-shadow:var(--shadow-md);padding:20px 24px;gap:16px}.nav-links.open{display:flex}.nav-toggle{display:block}.hero{padding:48px 0 40px}.hero .container{grid-template-columns:1fr;gap:40px;text-align:center}.hero-content p{max-width:100%}.hero-buttons{justify-content:center}.features,.highlights{padding:60px 0}.highlight-item{grid-template-columns:1fr;gap:32px}.highlight-item.reverse{direction:ltr}.demo{padding:60px 0}.demo .container{grid-template-columns:1fr}.demo-form{padding:28px 20px}.footer .container{flex-direction:column;align-items:center;text-align:center}}@media(max-width:480px){h1{font-size:1.65rem}.container{padding:0 16px}.hero-buttons{flex-direction:column;align-items:center}.hero-buttons .btn{width:100%;max-width:280px}.features-grid{grid-template-columns:1fr}.chat-panel{bottom:0;right:0;width:100%;height:100%;border-radius:0;border:none}.chat-fab{bottom:16px;right:16px}}