:root{--bg-color:#fff;--bg-image:none;--header-bg:#00a884;--header-text:#fff;--item-bg:#f9f9f9;--msg-text:#333;--msg-title:#222;--msg-time:#667781;--border-color:#e5e7eb;--accent-color:#00a884;--accent-hover:#008f72;--danger-color:#ef4444;--modal-overlay:rgba(0,0,0,0.6)}[data-theme="dark"]{--bg-color:#0b141a;--bg-image:none;--header-bg:#202c33;--header-text:#e9edef;--item-bg:#202c33;--msg-text:#e9edef;--msg-title:#e9edef;--msg-time:#8696a0;--border-color:#2a3942;--accent-color:#00a884;--accent-hover:#00c29a;--danger-color:#f87171;--modal-overlay:rgba(0,0,0,0.75)}body{margin:0;font-family:'Open Sans',-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background-color:var(--bg-color);color:var(--msg-text);transition:background-color .3s ease,color .3s ease;overscroll-behavior-y:contain;-webkit-font-smoothing:antialiased}.header{background:var(--header-bg);color:var(--header-text);padding:12px 18px;position:fixed;top:0;width:100%;z-index:1000;box-shadow:0 1px 3px rgba(0,0,0,.15);display:flex;align-items:center;justify-content:space-between;box-sizing:border-box}.header-title a{text-decoration:none;color:var(--header-text);font-size:1.15rem;font-weight:600;letter-spacing:-.3px}.header-controls{display:flex;align-items:center;gap:10px}.header-btn{background:rgba(255,255,255,.15);border:none;color:var(--header-text);font-size:1.1rem;width:36px;height:36px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:transform .2s ease,background .2s ease;outline:none;-webkit-tap-highlight-color:transparent}.header-btn:active{transform:scale(.92)}main{padding:2rem 1rem;max-width:900px;margin:60px auto 20px auto;box-sizing:border-box}h2,h3{color:var(--msg-title);margin-top:2rem}a{color:#0056b3;text-decoration:none}a:hover{text-decoration:underline}ul.social-links{list-style:none;padding:0}ul.social-links li{margin-bottom:.5rem}.promo-img{max-width:100%;height:auto;margin:1rem 0;border-radius:12px}section, .tutorial-section, .deals-section,.content-block,.faq-section{background-color:var(--item-bg);border:1px solid var(--border-color);padding:20px;border-radius:16px;margin-bottom:20px;box-shadow:0 4px 12px rgba(0,0,0,.05);transition:background-color .3s ease,border-color .3s ease}footer{background-color:var(--item-bg);border-top:1px solid var(--border-color);text-align:center;padding:1.5rem 1rem;color:var(--msg-time);transition:background-color .3s ease}.prompt-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background-color:var(--modal-overlay);z-index:3000;justify-content:center;align-items:center;backdrop-filter:blur(4px);padding:20px;box-sizing:border-box}.prompt-card{background-color:var(--item-bg);width:100%;max-width:400px;border-radius:16px;padding:24px;text-align:center;box-shadow:0 10px 25px rgba(0,0,0,.3);animation:popIn .3s cubic-bezier(.175,.885,.32,1.275)}@keyframes popIn{0%{transform:scale(.8);opacity:0}100%{transform:scale(1);opacity:1}}.prompt-icon{font-size:3rem;margin-bottom:12px}.prompt-title{font-size:1.25rem;font-weight:700;margin-bottom:10px;color:var(--msg-title)}.prompt-desc{font-size:.95rem;color:var(--msg-time);line-height:1.5;margin-bottom:20px}.prompt-btn-primary{background-color:var(--accent-color);color:#fff;border:none;width:100%;padding:12px;border-radius:10px;font-size:1rem;font-weight:600;cursor:pointer;margin-bottom:10px;transition:background .2s}.prompt-btn-primary:active{background-color:var(--accent-hover)}.prompt-btn-secondary{background:none;border:none;color:var(--msg-time);font-size:.9rem;cursor:pointer;padding:6px}.spinner-small{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top:2px solid #fff;border-radius:50%;animation:spin .8s linear infinite;display:inline-block}@keyframes spin{0%{transform:rotate(0deg)}100%{transform:rotate(360deg)}}.tutorial-header,.deals-header,.faq-header{display:flex;align-items:center;gap:12px;margin-bottom:16px}.tutorial-header span,.faq-emoji{font-size:1.8rem}.tutorial-header h3{margin:0;color:var(--msg-title);font-size:1.2rem}.device-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px;margin-top:15px}.device-card{background:rgba(0,168,132,.03);border:1px solid var(--border-color);border-radius:12px;padding:16px;transition:all .3s ease;position:relative;overflow:hidden}.device-card.highlight-device{border:2px solid var(--accent-color);background:rgba(0,168,132,.08);box-shadow:0 0 15px rgba(0,168,132,.15);transform:translateY(-2px)}.device-card.highlight-device::before{content:'⭐ Your Device';position:absolute;top:0;right:0;background:var(--accent-color);color:#fff;font-size:.65rem;font-weight:700;padding:3px 8px;border-bottom-left-radius:8px;text-transform:uppercase}.device-title{font-weight:700;font-size:1rem;color:var(--msg-title);margin-bottom:8px;display:flex;align-items:center;gap:8px}.device-steps{font-size:.88rem;color:var(--msg-time);line-height:1.5;padding-left:18px;margin:0}.device-steps li{margin-bottom:6px}.device-steps strong{color:var(--msg-text)}.deals-icon-box{background:rgba(0,168,132,.1);width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;flex-shrink:0}.deals-container{position:relative;max-height:500px;overflow-y:auto;padding-right:6px;display:flex;flex-direction:column;gap:16px;touch-action:pan-y}.deals-container::-webkit-scrollbar{width:6px}.deals-container::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:10px}.chat-row{display:flex;align-items:flex-start;gap:10px;max-width:100%}.chat-avatar{width:38px;height:38px;border-radius:50%;object-fit:cover;border:2px solid var(--accent-color);flex-shrink:0;background:#fff}.chat-bubble{background:var(--bg-color);border:1px solid var(--border-color);padding:12px 14px;border-radius:0 14px 14px 14px;max-width:calc(100% - 50px);box-shadow:0 1px 2px rgba(0,0,0,.05);position:relative;box-sizing:border-box}.chat-text{font-size:.92rem;color:var(--msg-text);white-space:pre-wrap;word-break:break-word;margin:0 0 10px 0;line-height:1.45}.chat-footer{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--border-color);padding-top:8px;font-size:.75rem;color:var(--msg-time)}.deal-btn{background-color:var(--accent-color);color:#fff;text-decoration:none;padding:5px 12px;border-radius:6px;font-weight:600;font-size:.8rem;transition:background .2s;display:inline-block}.deal-btn:hover{background-color:var(--accent-hover);text-decoration:none;color:#fff}.deals-loading,.deals-error{text-align:center;padding:20px;color:var(--msg-time);font-size:.9rem}.refresh-indicator{position:absolute;top:-50px;left:50%;transform:translateX(-50%) translateY(0);background:var(--item-bg);border:1px solid var(--border-color);color:var(--msg-text);padding:6px 16px;border-radius:20px;font-size:.8rem;font-weight:600;box-shadow:0 4px 12px rgba(0,0,0,.15);display:flex;align-items:center;gap:8px;transition:transform .25s cubic-bezier(.175,.885,.32,1.275),opacity .2s ease;opacity:0;pointer-events:none;z-index:20;backdrop-filter:blur(8px)}.refresh-indicator.visible{opacity:1}.refresh-spinner{width:14px;height:14px;border:2px solid var(--border-color);border-top:2px solid var(--accent-color);border-radius:50%;animation:spin .8s linear infinite;display:inline-block}.main-heading{margin:0;font-size:1.15rem;font-weight:700}.sub-heading{font-size:.95rem;font-weight:600;color:var(--msg-title);margin:4px 0 0 0}.deals-subtext,.section-desc,.faq-subtext{margin:0;font-size:.85rem;color:var(--msg-time)}.faq-header{margin-bottom:16px}.faq-search-box{margin-bottom:20px}#faq-search-input{width:100%;padding:12px 16px;border-radius:12px;border:1px solid var(--border-color);background:var(--bg-color);color:var(--msg-text);font-size:.95rem;outline:none;box-sizing:border-box;transition:border-color .2s}#faq-search-input:focus{border-color:var(--accent-color)}.faq-list{display:flex;flex-direction:column;gap:10px}.faq-item{border:1px solid var(--border-color);border-radius:10px;overflow:hidden;background:var(--bg-color)}.faq-question{width:100%;text-align:left;background:none;border:none;padding:14px 16px;font-size:.95rem;font-weight:600;color:var(--msg-title);cursor:pointer;display:flex;justify-content:space-between;align-items:center;outline:none}.faq-answer{display:none;padding:0 16px 16px 16px;font-size:.9rem;color:var(--msg-time);line-height:1.5;border-top:1px solid var(--border-color)}.faq-arrow{transition:transform .3s}.code-highlight{color:var(--accent-color)}.brand-link{display:flex;align-items:center;gap:8px}.brand-logo{width:28px;height:28px;border-radius:6px;object-fit:cover}.testimonial-blockquote { margin: 20px 0; padding: 15px 20px; border-left: 4px solid var(--accent-color); background: var(--bg-color); border-radius: 4px; }.testimonial-text { margin: 0 0 8px 0; font-style: italic; }.testimonial-cite-link { color: inherit; text-decoration: underline; }.faq-note-paragraph { margin: 10px 0 0 0; }.faq-sublist { margin: 6px 0 0 18px; padding: 0; }.sidebar-list { list-style: none; padding: 0; margin: 0; }.sidebar-list li { margin-bottom: 8px; }