/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;line-height:1.6;color:#1e293b;background:#fff;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:#6610f2;text-decoration:none;transition:color .2s}
a:hover{color:#5a0dc8}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== Brand Logo ===== */
.logo-a{color:#6610f2;font-weight:800}
.logo-b{color:#0ae0b8;font-weight:800}

/* ===== Navbar ===== */
.navbar{position:fixed;top:16px;left:0;right:0;z-index:1000;padding:0;transition:all .3s;background:none;border:none}
.navbar .container{display:flex;align-items:center;justify-content:space-between;background:rgba(20,14,35,.35);backdrop-filter:blur(24px) saturate(1.4);-webkit-backdrop-filter:blur(24px) saturate(1.4);border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:10px 24px;transition:all .3s;max-width:1200px}
.navbar.scrolled{top:10px}
.navbar.scrolled .container{background:rgba(14,9,24,.55);backdrop-filter:blur(28px) saturate(1.5);-webkit-backdrop-filter:blur(28px) saturate(1.5);border-color:rgba(255,255,255,.12);box-shadow:0 8px 32px rgba(0,0,0,.25)}
.navbar-brand{display:flex;align-items:center;gap:2px;font-size:1.4rem;letter-spacing:-0.01em}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links>a{color:rgba(255,255,255,.75);font-size:.9rem;font-weight:500;transition:all .2s;padding:8px 14px;border-radius:8px}
.nav-links>a:hover{color:#fff;background:rgba(255,255,255,.08)}
.btn-nav{background:linear-gradient(135deg,#6610f2,#4f46e5);color:#fff!important;padding:9px 22px!important;border-radius:9px;font-weight:600;font-size:.88rem!important;box-shadow:0 2px 12px rgba(102,16,242,.35);display:inline-flex;align-items:center;gap:6px;border:1px solid rgba(255,255,255,.1)}
.btn-nav:hover{box-shadow:0 4px 20px rgba(102,16,242,.5);background:linear-gradient(135deg,#7c2ff7,#6355f0)!important;color:#fff!important;transform:translateY(-1px)}
.nav-toggle{display:none;background:none;border:none;font-size:1.5rem;color:#fff;cursor:pointer}

/* Dropdown */
.nav-dropdown{position:relative}
.nav-dropdown-trigger{background:none;border:none;color:rgba(255,255,255,.75);font-size:.9rem;font-weight:500;cursor:pointer;padding:8px 14px;border-radius:8px;display:flex;align-items:center;gap:5px;transition:all .2s;font-family:inherit}
.nav-dropdown-trigger:hover,.nav-dropdown.open .nav-dropdown-trigger{color:#fff;background:rgba(255,255,255,.08)}
.nav-dropdown-trigger i{font-size:.65rem;transition:transform .2s}
.nav-dropdown.open .nav-dropdown-trigger i{transform:rotate(180deg)}
.nav-dropdown-menu{position:absolute;top:calc(100% + 12px);left:50%;transform:translateX(-50%) translateY(8px);background:rgba(20,14,35,.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.1);border-radius:14px;padding:8px;min-width:270px;box-shadow:0 16px 48px rgba(0,0,0,.4),0 4px 12px rgba(0,0,0,.2);opacity:0;visibility:hidden;transition:all .2s ease;pointer-events:none}
.nav-dropdown.open .nav-dropdown-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);pointer-events:auto}
.nav-dropdown-menu a{display:flex;align-items:center;gap:14px;padding:12px 14px;border-radius:10px;color:rgba(255,255,255,.8);font-size:.9rem;transition:all .15s}
.nav-dropdown-menu a:hover{background:rgba(255,255,255,.08);color:#fff}
.nav-dropdown-menu a i{font-size:1.15rem;color:#a78bfa;width:22px;text-align:center;flex-shrink:0}
.nav-dropdown-menu a:hover i{color:#c4b5fd}
.nav-dropdown-menu a div{display:flex;flex-direction:column}
.nav-dropdown-menu a strong{font-weight:600;font-size:.88rem;color:#fff}
.nav-dropdown-menu a span{font-size:.78rem;color:rgba(255,255,255,.4);font-weight:400;margin-top:1px}
.nav-dropdown-menu a:hover span{color:rgba(255,255,255,.6)}

/* Mobile Menu */
.mobile-menu{display:none;position:fixed;top:72px;left:12px;right:12px;bottom:12px;background:rgba(14,9,24,.97);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);padding:20px 24px;overflow-y:auto;flex-direction:column;gap:4px;z-index:999;border-radius:16px;border:1px solid rgba(255,255,255,.08)}
.mobile-menu>a{color:rgba(255,255,255,.8);font-weight:500;padding:14px 12px;border-radius:10px;font-size:.95rem;display:flex;align-items:center;gap:10px;transition:background .15s}
.mobile-menu>a:hover{background:rgba(255,255,255,.08);color:#fff}
.mobile-menu>a i{color:#a78bfa;font-size:1rem;width:22px;text-align:center}
.mobile-menu.open{display:flex}
.mobile-cta{background:linear-gradient(135deg,#6610f2,#4f46e5)!important;color:#fff!important;justify-content:center;font-weight:600;margin-top:12px;border-radius:10px!important;border:1px solid rgba(255,255,255,.1)!important}
.mobile-dropdown-trigger{background:none;border:none;color:rgba(255,255,255,.8);font-size:.95rem;font-weight:500;cursor:pointer;padding:14px 12px;border-radius:10px;display:flex;align-items:center;justify-content:space-between;width:100%;font-family:inherit;transition:background .15s}
.mobile-dropdown-trigger:hover{background:rgba(255,255,255,.08)}
.mobile-dropdown-trigger i{font-size:.7rem;color:rgba(255,255,255,.4);transition:transform .2s}
.mobile-dropdown.open .mobile-dropdown-trigger i{transform:rotate(180deg)}
.mobile-dropdown-items{display:none;padding:4px 0 8px 16px;flex-direction:column;gap:2px}
.mobile-dropdown.open .mobile-dropdown-items{display:flex}
.mobile-dropdown-items a{color:rgba(255,255,255,.65);font-size:.9rem;padding:10px 12px;border-radius:8px;display:flex;align-items:center;gap:10px;transition:all .15s}
.mobile-dropdown-items a:hover{background:rgba(255,255,255,.08);color:#fff}
.mobile-dropdown-items a i{color:#a78bfa;font-size:.9rem;width:20px;text-align:center}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:10px;font-weight:600;font-size:.95rem;border:none;cursor:pointer;transition:all .25s;text-decoration:none}
.btn-lg{padding:14px 32px;font-size:1.05rem}
.btn-primary{background:linear-gradient(135deg,#6610f2,#4f46e5);color:#fff;box-shadow:0 4px 14px rgba(102,16,242,.3)}
.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:0 6px 20px rgba(102,16,242,.4)}
.btn-outline{background:transparent;color:#6610f2;border:2px solid #6610f2}
.btn-outline:hover{background:#6610f2;color:#fff}
.btn-white{background:#fff;color:#6610f2;box-shadow:0 4px 14px rgba(0,0,0,.15)}
.btn-white:hover{background:#f8fafc;color:#5a0dc8;transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.15);color:#fff;border:2px solid rgba(255,255,255,.3)}
.btn-ghost:hover{background:rgba(255,255,255,.25);color:#fff}
.btn-block{display:flex;justify-content:center;width:100%}

/* ===== Hero ===== */
.hero{position:relative;padding:160px 0 100px;overflow:hidden;background:linear-gradient(135deg,#0f172a 0%,#1e293b 50%,#0f172a 100%);color:#fff}
.hero-bg{position:absolute;inset:0;background:radial-gradient(ellipse at 20% 50%,rgba(102,16,242,.12),transparent 60%),radial-gradient(ellipse at 80% 20%,rgba(10,224,184,.08),transparent 50%)}
.hero-nodes{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.hero .container{position:relative;text-align:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(102,16,242,.15);border:1px solid rgba(102,16,242,.3);color:#a78bfa;padding:8px 20px;border-radius:50px;font-size:.9rem;font-weight:600;margin-bottom:32px;animation:fadeInUp .6s ease}
.hero h1{font-size:clamp(2.2rem,5.5vw,4rem);font-weight:800;line-height:1.15;margin-bottom:24px;letter-spacing:-0.02em;animation:fadeInUp .6s ease .1s both}
.hero-sub{font-size:clamp(1rem,2vw,1.25rem);color:#94a3b8;max-width:680px;margin:0 auto 40px;line-height:1.7;animation:fadeInUp .6s ease .2s both}
.hero-sub strong{color:#e2e8f0}
.hero-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;animation:fadeInUp .6s ease .3s both}
.hero-stats{display:flex;justify-content:center;gap:40px;margin-top:64px;flex-wrap:wrap;animation:fadeInUp .6s ease .4s both}
.stat{text-align:center;opacity:0;transition:opacity .5s,transform .5s}
.stat.visible{opacity:1}
.stat-value{display:block;font-size:2rem;font-weight:800;color:#fff}
.stat-label{font-size:.85rem;color:#64748b;text-transform:uppercase;letter-spacing:.05em}
.stat-divider{width:1px;background:rgba(255,255,255,.1);align-self:stretch}

/* ===== Hero Screenshot 3D Tilt ===== */
.hero-screenshot{margin-top:64px;perspective:1200px;animation:fadeInUp .8s ease .5s both}
.hero-screenshot-inner{transform:rotateX(12deg) rotateY(0deg);transition:transform .4s ease-out;border-radius:12px;overflow:hidden;box-shadow:0 40px 80px rgba(0,0,0,.4),0 0 0 1px rgba(255,255,255,.08),0 0 60px rgba(102,16,242,.15);max-width:960px;margin:0 auto}
.hero-screenshot-inner img{display:block;width:100%;border-radius:12px}

/* ===== Section Common ===== */
.section-header{text-align:center;max-width:700px;margin:0 auto 56px}
.section-tag{display:inline-block;background:linear-gradient(135deg,#f3e8ff,#ede9fe);color:#6610f2;padding:6px 16px;border-radius:50px;font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;margin-bottom:16px}
.section-header h2{font-size:clamp(1.8rem,4vw,2.5rem);font-weight:800;color:#0f172a;margin-bottom:16px;letter-spacing:-0.02em}
.section-header p{font-size:1.1rem;color:#64748b;line-height:1.7}

/* ===== Architecture Diagram ===== */
.architecture{padding:80px 0 100px;background:#0f172a;overflow:hidden}
.architecture .section-header h2,.architecture .section-header p{color:#e2e8f0}
.architecture .section-header p{color:#94a3b8}
.architecture .section-tag{background:rgba(102,16,242,.2);color:#a78bfa}
.arch-diagram{max-width:900px;margin:0 auto;opacity:0;transform:translateY(20px);transition:all .8s}
.arch-diagram.visible{opacity:1;transform:translateY(0)}
.arch-svg{width:100%;height:auto}

/* ===== Protocols ===== */
.protocols{padding:100px 0;background:#f8fafc}
.protocol-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.protocol-card{background:#fff;border-radius:16px;padding:36px;border:1px solid #e2e8f0;transition:all .4s;opacity:0;transform:translateY(20px)}
.protocol-card.visible{opacity:1;transform:translateY(0)}
.protocol-card:hover{transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,.08)}
.protocol-icon{margin-bottom:20px}
.protocol-card h3{font-size:1.35rem;font-weight:700;margin-bottom:8px;color:#0f172a}
.protocol-card p{color:#64748b;font-size:.95rem;margin-bottom:20px;line-height:1.6}
.protocol-card ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.protocol-card li{display:flex;align-items:center;gap:8px;color:#475569;font-size:.9rem}
.protocol-card li i{color:#22c55e;font-size:.85rem}
.badge-new{display:inline-block;background:#d4f8e8;color:#059669;padding:2px 10px;border-radius:50px;font-size:.75rem;font-weight:700;text-transform:uppercase;vertical-align:middle;margin-left:4px}

/* ===== Features ===== */
.features{padding:100px 0}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:#fff;border:1px solid #e2e8f0;border-radius:16px;padding:32px;transition:all .4s;opacity:0;transform:translateY(20px)}
.feature-card.visible{opacity:1;transform:translateY(0)}
.feature-card:hover{border-color:#c4b5fd;box-shadow:0 8px 30px rgba(102,16,242,.08)}
.feature-card.highlight{background:linear-gradient(135deg,#1e1045,#0f172a);color:#fff;border-color:transparent}
.feature-card.highlight h3{color:#fff}
.feature-card.highlight p{color:#94a3b8}
.feature-card.highlight .feature-icon{background:rgba(102,16,242,.25)}
.feature-card.highlight .feature-icon i{color:#a78bfa}
.feature-icon{width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:#f3e8ff;margin-bottom:20px;font-size:1.4rem}
.feature-icon i{color:#6610f2}
.feature-card h3{font-size:1.1rem;font-weight:700;color:#0f172a;margin-bottom:10px}
.feature-card p{color:#64748b;font-size:.9rem;line-height:1.65}

/* ===== API Section ===== */
.api-section{padding:100px 0;background:#0f172a;color:#fff;overflow:hidden}
.api-content{display:grid;grid-template-columns:1fr 1.2fr;gap:60px;align-items:center;opacity:0;transform:translateY(20px);transition:all .6s}
.api-content.visible{opacity:1;transform:translateY(0)}
.api-text .section-tag{background:rgba(102,16,242,.2);color:#a78bfa}
.api-text h2{font-size:clamp(1.8rem,3.5vw,2.5rem);font-weight:800;margin-bottom:20px;line-height:1.2;color:#fff}
.api-text p{color:#94a3b8;font-size:1.05rem;line-height:1.7;margin-bottom:28px}
.api-text p strong{color:#e2e8f0}
.api-features{list-style:none;display:flex;flex-direction:column;gap:12px;margin-bottom:32px}
.api-features li{display:flex;align-items:center;gap:10px;color:#cbd5e1;font-size:.95rem}
.api-features li i{color:#0ae0b8;font-size:1rem}
.code-window{background:#1e293b;border-radius:12px;border:1px solid #334155;overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.code-header{display:flex;align-items:center;gap:8px;padding:14px 18px;background:#0f172a;border-bottom:1px solid #1e293b}
.code-dot{width:12px;height:12px;border-radius:50%}
.code-dot.red{background:#ef4444}.code-dot.yellow{background:#eab308}.code-dot.green{background:#22c55e}
.code-title{margin-left:auto;color:#64748b;font-size:.8rem}
.code-window pre{padding:24px;overflow-x:auto;font-size:.85rem;line-height:1.7}
.code-window code{font-family:'SF Mono','Fira Code',monospace;color:#e2e8f0}
.code-window .c{color:#64748b}.code-window .s{color:#a5d6ff}.code-window .k{color:#7dd3fc}.code-window .b{color:#86efac}

/* ===== Comparison ===== */
.comparison{padding:100px 0;background:#f8fafc}
.comparison-table-wrap{overflow-x:auto;border-radius:16px;border:1px solid #e2e8f0;background:#fff}
.comparison-table{width:100%;border-collapse:collapse;font-size:.95rem}
.comparison-table thead{background:#f1f5f9}
.comparison-table th{padding:16px 20px;text-align:left;font-weight:700;color:#0f172a;white-space:nowrap}
.comparison-table th.v2{color:#6610f2;background:#f3e8ff}
.comparison-table td{padding:14px 20px;border-top:1px solid #f1f5f9;color:#475569}
.comparison-table td.v2{background:#faf5ff;color:#1e293b;font-weight:500}
.comparison-table td strong{color:#0f172a}
.comparison-table tr:hover td{background:#f8fafc}
.comparison-table tr:hover td.v2{background:#f3e8ff}
.text-green{color:#22c55e}.text-red{color:#ef4444}

/* ===== Pricing ===== */
.pricing{padding:100px 0}
.pricing-grid{display:flex;flex-direction:column;gap:16px;max-width:800px;margin:0 auto}
.price-card{background:#fff;border:1px solid #e2e8f0;border-radius:16px;padding:24px 28px;position:relative;transition:all .4s;opacity:0;transform:translateY(20px);display:flex;align-items:center;gap:24px}
.price-card.visible{opacity:1;transform:translateY(0)}
.price-card:hover{box-shadow:0 8px 30px rgba(0,0,0,.06);border-color:#c4b5fd}
.price-card.free{border:2px solid #6610f2;box-shadow:0 4px 20px rgba(102,16,242,.08)}
.price-badge{position:absolute;top:-10px;left:24px;background:linear-gradient(135deg,#6610f2,#0ae0b8);color:#fff;padding:3px 14px;border-radius:50px;font-size:.7rem;font-weight:700;white-space:nowrap}
.price-left{min-width:160px}
.price-card h3{font-size:1.05rem;font-weight:700;color:#0f172a;margin-bottom:4px}
.price{font-size:1.8rem;font-weight:800;color:#0f172a;margin-bottom:2px}
.price span{font-size:.8rem;font-weight:400;color:#94a3b8}
.price-desc{color:#64748b;font-size:.8rem}
.price-features{flex:1;display:flex;flex-wrap:wrap;gap:6px 20px;list-style:none}
.price-features li{display:flex;align-items:center;gap:6px;color:#475569;font-size:.82rem}
.price-features li i{color:#0ae0b8;font-size:.78rem;flex-shrink:0}
.price-action{flex-shrink:0}

/* ===== Download ===== */
.download{padding:100px 0;background:#f8fafc}
.download-box{max-width:800px;margin:0 auto;background:#fff;border:2px solid #6610f2;border-radius:20px;padding:40px;box-shadow:0 12px 40px rgba(102,16,242,.08)}
.download-info{display:flex;flex-direction:column;gap:28px}
.download-version{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.download-tag{display:inline-block;background:linear-gradient(135deg,#f59e0b,#f97316);color:#fff;padding:4px 14px;border-radius:50px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em}
.download-version h3{font-size:1.4rem;font-weight:700;color:#0f172a;margin:0}
.download-meta{color:#64748b;font-size:.9rem;display:flex;align-items:center;gap:6px;width:100%;margin-top:4px}
.download-details{display:flex;flex-direction:column;gap:12px}
.download-detail-item{display:flex;align-items:flex-start;gap:10px;font-size:.95rem;color:#475569}
.download-detail-item i{color:#0ae0b8;font-size:1rem;margin-top:2px;flex-shrink:0}
.download-detail-item i.bi-info-circle-fill{color:#f59e0b}
.download-detail-item strong{color:#0f172a}
.download-actions{display:flex;gap:12px;flex-wrap:wrap}
.download-install{margin-top:4px}
.download-install-title{font-size:.85rem;font-weight:600;color:#64748b;margin-bottom:12px;display:flex;align-items:center;gap:6px}
.download-install .code-window{border:1px solid #e2e8f0}
.download-install .code-window pre{padding:16px 20px;font-size:.82rem}
.download-feedback{text-align:center;margin-top:28px}
.download-feedback p{color:#64748b;font-size:.9rem;display:flex;align-items:center;justify-content:center;gap:8px}
.download-feedback a{color:#6610f2;text-decoration:underline}

/* ===== CTA ===== */
.cta{padding:80px 0;background:linear-gradient(135deg,#1e1045,#6610f2,#0ae0b8);color:#fff;text-align:center}
.cta h2{font-size:clamp(1.6rem,3.5vw,2.2rem);font-weight:800;margin-bottom:16px}
.cta p{color:rgba(255,255,255,.8);font-size:1.1rem;max-width:600px;margin:0 auto 32px}
.cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}

/* ===== FAQ ===== */
.faq{padding:100px 0}
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid #e2e8f0;border-radius:12px;overflow:hidden;transition:all .3s;opacity:0;transform:translateY(10px)}
.faq-item.visible{opacity:1;transform:translateY(0)}
.faq-item[open]{border-color:#c4b5fd;box-shadow:0 4px 16px rgba(102,16,242,.06)}
.faq-item summary{padding:20px 24px;font-weight:600;color:#0f172a;cursor:pointer;display:flex;align-items:center;justify-content:space-between;list-style:none;font-size:1rem}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'+';font-size:1.4rem;color:#94a3b8;font-weight:300;transition:transform .2s}
.faq-item[open] summary::after{content:'\2212'}
.faq-item p{padding:0 24px 20px;color:#64748b;line-height:1.7;font-size:.95rem}
.faq-item p a{color:#6610f2;text-decoration:underline}

/* ===== Footer ===== */
.footer{background:#0f172a;color:#94a3b8;padding:64px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px}
.footer-brand{display:flex;flex-direction:column;gap:12px}
.footer-logo{font-size:1.4rem}
.footer-brand p{font-size:.9rem;line-height:1.6}
.footer-brand a{color:#0ae0b8}
.footer-links h4{font-size:.85rem;font-weight:700;color:#fff;text-transform:uppercase;letter-spacing:.06em;margin-bottom:16px}
.footer-links a{display:block;color:#94a3b8;font-size:.9rem;padding:4px 0;transition:color .2s}
.footer-links a:hover{color:#fff}
.footer-bottom{border-top:1px solid #1e293b;padding-top:24px;text-align:center;font-size:.85rem}

/* ===== Animations ===== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
}
@media(max-width:768px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .mobile-menu{top:68px}
  .hero{padding:120px 0 70px}
  .protocol-grid{grid-template-columns:1fr}
  .features-grid{grid-template-columns:1fr}
  .api-content{grid-template-columns:1fr;gap:40px}
  .price-card{flex-direction:column;align-items:flex-start;text-align:left}
  .price-left{min-width:auto}
  .price-features{margin:12px 0}
  .price-action{width:100%}
  .price-action .btn{width:100%;justify-content:center}
  .hero-stats{gap:24px}
  .stat-divider{display:none}
  .hero-screenshot{margin-top:40px}
  .hero-screenshot-inner{transform:rotateX(8deg)}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .comparison-table{font-size:.85rem}
  .comparison-table th,.comparison-table td{padding:10px 14px}
  .arch-diagram{overflow-x:auto}
}