:root {
  --primary: #d97706;
  --primary-hover: #b45309;
  --primary-light: #fef3c7;
  --secondary: #0ea5e9;
  --accent: #8b5cf6;
  --success: #16a34a;
  --warning: #d97706;
  --error: #dc2626;
  --neutral-50: #fafafa;
  --neutral-100: #f5f5f5;
  --neutral-200: #e5e5e5;
  --neutral-300: #d4d4d4;
  --neutral-400: #a3a3a3;
  --neutral-500: #737373;
  --neutral-600: #525252;
  --neutral-700: #404040;
  --neutral-800: #262626;
  --neutral-900: #171717;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-lg: 0 10px 25px -5px rgba(0,0,0,.08), 0 4px 10px -5px rgba(0,0,0,.04);
  --max-width: 1100px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;background:var(--neutral-50);color:var(--neutral-500);line-height:1.7}
a{color:var(--primary);text-decoration:none;transition:color .15s}
a:hover{color:var(--primary-hover)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
a:focus-visible{border-radius:2px}
img{max-width:100%}
code{font-family:ui-monospace,SFMono-Regular,monospace;font-size:.875em}
pre{background:var(--neutral-900);color:#e2e8f0;padding:24px;border-radius:var(--radius);font-size:13px;overflow-x:auto;line-height:1.6}

.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}

/* Header */
.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--neutral-200)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:16px 0}
.logo{font-size:22px;font-weight:800;letter-spacing:-.5px;color:var(--neutral-800)}
.logo span{color:var(--primary)}
.nav{display:flex;align-items:center;gap:24px;list-style:none}
.nav a{font-size:14px;font-weight:500;color:var(--neutral-600);padding:6px 0;position:relative}
.nav a:hover{color:var(--primary)}
.nav a.active{color:var(--primary)}
.nav a.active::after{content:'';position:absolute;bottom:-2px;left:0;right:0;height:2px;background:var(--primary);border-radius:1px}
.nav-cta{display:flex;align-items:center;gap:8px}
.hamburger{display:none;background:none;border:none;font-size:24px;cursor:pointer;padding:8px;color:var(--neutral-700)}
@media(max-width:768px){
  .nav{display:none;position:absolute;top:100%;left:0;width:100%;background:#fff;flex-direction:column;padding:16px 24px;border-bottom:1px solid var(--neutral-200);box-shadow:var(--shadow-lg)}
  .nav.open{display:flex}
  .hamburger{display:block}
  .nav-cta{flex-direction:column;width:100%}
  .nav-cta .btn{width:100%;justify-content:center}
}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:8px;font-size:15px;font-weight:600;border:none;cursor:pointer;transition:all .2s;min-height:44px;line-height:1;font-family:inherit}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover);color:#fff}
.btn-outline{background:transparent;border:2px solid var(--neutral-300);color:var(--neutral-700)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-sm{padding:8px 32px;font-size:13px;min-height:auto}
.nav-cta .btn{padding:8px 32px}
.nav-cta .btn:hover{color:#fff}

/* Hero */
.hero{text-align:center;padding:80px 24px 64px;max-width:800px;margin:0 auto}
.hero h1{font-size:48px;font-weight:800;letter-spacing:-1px;line-height:1.1;margin-bottom:16px;color:var(--neutral-800)}
.hero h1 .accent{color:var(--primary);position:relative}
.hero h1 .accent::after{content:'';position:absolute;bottom:2px;left:0;right:0;height:4px;background:var(--primary-light);border-radius:2px;z-index:-1}
.hero p{font-size:18px;color:var(--neutral-400);max-width:600px;margin:0 auto 32px;line-height:1.6}
.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
@media(max-width:640px){
  .hero h1{font-size:32px;letter-spacing:-.5px}
  .hero p{font-size:16px}
}

/* Sections */
.section{padding:80px 0}
.section-dark{background:var(--neutral-900);color:#fff}
.section-label{font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:1.5px;color:var(--primary);margin-bottom:8px;text-align:center}
.section-title{font-size:36px;font-weight:700;text-align:center;margin-bottom:8px;color:var(--neutral-800);letter-spacing:-.5px;line-height:1.2}
.section-dark .section-title{color:#fff}
.section-sub{font-size:16px;color:var(--neutral-400);text-align:center;max-width:600px;margin:0 auto 48px}
.section-dark .section-sub{color:rgba(255,255,255,.55)}
@media(max-width:640px){
  .section{padding:48px 0}
  .section-title{font-size:28px}
}

/* Trust bar */
.trust-bar{background:var(--neutral-100);padding:32px 0}
.trust-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:24px;text-align:center}
.trust-item{display:flex;flex-direction:column;align-items:center;gap:4px}
.trust-item .icon{font-size:24px}
.trust-item .label{font-size:13px;font-weight:600;color:var(--neutral-700)}
.trust-item .sub{font-size:12px;color:var(--neutral-400)}

/* Feature cards */
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.feature-card{background:#fff;border-radius:var(--radius);border:1px solid var(--neutral-200);padding:28px;transition:all .3s ease}
.feature-card:hover{box-shadow:var(--shadow-lg);border-color:var(--neutral-300);transform:translateY(-2px)}
.feature-card .icon{font-size:28px;margin-bottom:8px}
.feature-card h3{font-size:18px;font-weight:600;margin-bottom:8px;color:var(--neutral-700)}
.feature-card p{font-size:14px;color:var(--neutral-400);line-height:1.6}

/* License model cards (dark) */
.license-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.license-card{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:24px;transition:all .2s}
.license-card:hover{background:rgba(255,255,255,.07);border-color:var(--primary)}
.license-card h4{font-size:16px;font-weight:600;margin-bottom:6px;color:#fff}
.license-card p{font-size:13px;color:rgba(255,255,255,.55);line-height:1.5}

/* Pricing */
.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;align-items:start}
.pricing-card{background:#fff;border-radius:12px;border:1px solid var(--neutral-200);padding:32px;text-align:center;transition:all .3s ease;position:relative}
.pricing-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.pricing-card.featured{border-color:var(--primary);border-width:2px;transform:scale(1.02)}
.pricing-card.featured:hover{transform:scale(1.02) translateY(-2px)}
.pricing-card .badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);padding:4px 14px;border-radius:999px;font-size:12px;font-weight:600;background:var(--primary);color:#fff}
.pricing-card h3{font-size:20px;font-weight:700;color:var(--neutral-800)}
.pricing-card .price{font-size:44px;font-weight:800;margin:16px 0 4px;color:var(--neutral-800)}
.pricing-card .price span{font-size:16px;font-weight:400;color:var(--neutral-400)}
.pricing-card .period{font-size:14px;color:var(--neutral-400);margin-bottom:24px}
.pricing-card ul{list-style:none;font-size:14px;text-align:left;margin-bottom:24px;color:var(--neutral-600)}
.pricing-card ul li{padding:8px 0;border-bottom:1px solid var(--neutral-100)}
.pricing-card ul li:last-child{border-bottom:none}
.pricing-card ul li::before{content:'✓ ';color:var(--success);font-weight:700;margin-right:6px}
.pricing-card .btn{width:100%;justify-content:center}

/* CTA band */
.cta{text-align:center;padding:80px 24px}
.cta h2{font-size:36px;font-weight:700;margin-bottom:8px;color:var(--neutral-800);line-height:1.2}
.cta p{font-size:18px;color:var(--neutral-400);max-width:500px;margin:0 auto 32px}
@media(max-width:640px){
  .cta h2{font-size:28px}
}

/* Footer */
.footer{background:var(--neutral-900);color:rgba(255,255,255,.5);padding:64px 0 24px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px}
.footer-brand h3{font-size:18px;font-weight:700;color:#fff;margin-bottom:6px}
.footer-brand p{font-size:13px;max-width:300px;line-height:1.6}
.footer-col h4{font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:1px;color:rgba(255,255,255,.6);margin-bottom:16px}
.footer-col a{display:block;padding:4px 0;color:rgba(255,255,255,.55);font-size:13px}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:48px;padding-top:24px;text-align:center;font-size:13px;color:rgba(255,255,255,.35)}
@media(max-width:768px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:480px){
  .footer-grid{grid-template-columns:1fr}
}

/* Legal pages */
.legal-content{max-width:720px;margin:0 auto}
.legal-content h1{font-size:36px;font-weight:700;margin-bottom:8px;color:var(--neutral-800)}
.legal-content .updated{font-size:14px;color:var(--neutral-400);margin-bottom:48px}
.legal-content h2{font-size:20px;font-weight:600;margin:32px 0 8px;color:var(--neutral-700)}
.legal-content p{margin-bottom:16px;font-size:15px;line-height:1.7}
.legal-content ul{margin:0 0 16px 24px}
.legal-content ul li{margin-bottom:6px;font-size:15px}

/* SDK page */
.sdk-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.sdk-card{background:#fff;border:1px solid var(--neutral-200);border-radius:var(--radius);padding:24px}
.sdk-card h3{font-size:18px;font-weight:600;margin-bottom:8px;color:var(--neutral-700)}
.sdk-card .install{background:var(--neutral-100);padding:8px 12px;border-radius:6px;font-family:ui-monospace,SFMono-Regular,monospace;font-size:13px;margin-bottom:16px;color:var(--neutral-600)}
.api-ref{background:#fff;border:1px solid var(--neutral-200);border-radius:var(--radius)}
.api-ref h3{padding:24px;border-bottom:1px solid var(--neutral-200);font-size:18px;font-weight:600;color:var(--neutral-700)}
.api-method{padding:24px;border-bottom:1px solid var(--neutral-100)}
.api-method:last-child{border-bottom:none}
.api-method .method{display:inline-block;padding:2px 8px;border-radius:4px;font-size:12px;font-weight:700;text-transform:uppercase;margin-right:8px}
.api-method .method.get{background:#dcfce7;color:var(--success)}
.api-method .method.post{background:#dbeafe;color:#2563eb}
.api-method .path{font-family:ui-monospace,SFMono-Regular,monospace;font-size:13px;color:var(--neutral-700)}
.api-method .desc{font-size:14px;color:var(--neutral-400);margin-top:4px}
@media(max-width:768px){
  .sdk-grid{grid-template-columns:1fr}
}
.sdk-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.sdk-header h3{margin:0}
.sdk-lang{font-size:28px}
.card-header{font-size:16px;font-weight:600;margin-bottom:8px;color:var(--neutral-700)}
.badge-success{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:500;background:#dcfce7;color:var(--success)}
.api-method .method.delete{background:#fee2e2;color:#dc2626}
.api-method .method.put{background:#fef3c7;color:#d97706}
.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.blog-card{background:#fff;border:1px solid var(--neutral-200);border-radius:var(--radius);padding:28px;transition:all .3s ease}
.blog-card:hover{box-shadow:var(--shadow-lg);border-color:var(--neutral-300);transform:translateY(-2px)}
.blog-card h3{font-size:18px;font-weight:600;margin-bottom:8px}
.blog-card h3 a{color:var(--neutral-700);text-decoration:none}
.blog-card h3 a:hover{color:var(--primary)}
.blog-card p{font-size:14px;color:var(--neutral-500);line-height:1.6;margin-bottom:12px}
.blog-meta{font-size:12px;color:var(--neutral-400);margin-bottom:8px;text-transform:uppercase;letter-spacing:.5px}
.blog-link{font-size:14px;font-weight:500;color:var(--primary);text-decoration:none}
.blog-link:hover{text-decoration:underline}

/* Page hero (inner pages) */
.page-hero{text-align:center;padding:64px 24px 48px}
.page-hero h1{font-size:40px;font-weight:700;margin-bottom:8px;color:var(--neutral-800);letter-spacing:-.5px}
.page-hero p{font-size:18px;color:var(--neutral-400);max-width:600px;margin:0 auto}
@media(max-width:640px){
  .page-hero h1{font-size:28px}
}

/* FAQ */
.faq-list{max-width:700px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--neutral-200);padding:24px 0}
.faq-item h4{font-size:16px;font-weight:600;color:var(--neutral-700);margin-bottom:8px;cursor:pointer}
.faq-item p{font-size:14px;color:var(--neutral-400);line-height:1.6}

/* Portal feature cards */
.portal-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.portal-card{background:#fff;border:1px solid var(--neutral-200);border-radius:var(--radius);padding:24px;text-align:center}
.portal-card .icon{font-size:36px;margin-bottom:8px}
.portal-card h4{font-size:16px;font-weight:600;margin-bottom:6px;color:var(--neutral-700)}
.portal-card p{font-size:14px;color:var(--neutral-400)}

/* Security features */
.security-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.security-item{background:#fff;border:1px solid var(--neutral-200);border-radius:var(--radius);padding:24px;display:flex;gap:16px;align-items:flex-start}
.security-item .icon{font-size:24px;flex-shrink:0;width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:var(--primary-light);border-radius:8px}
.security-item h4{font-size:16px;font-weight:600;margin-bottom:4px;color:var(--neutral-700)}
.security-item p{font-size:14px;color:var(--neutral-400);line-height:1.6}

/* Feature page expand */
.feature-detail-tip{margin-top:8px;font-size:13px;color:var(--neutral-400);padding:8px 16px;background:var(--neutral-50);border-radius:6px;border:1px dashed var(--neutral-200)}

/* Utility */
.mt-xl{margin-top:32px}
.mt-2xl{margin-top:48px}

/* License detail pages */
.lm-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;margin-bottom:48px}
.lm-card{background:#fff;border:1px solid var(--neutral-200);border-radius:12px;padding:24px;cursor:pointer;transition:all .3s ease;position:relative}
.lm-card:hover{border-color:var(--primary);box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.lm-card.highlighted{border-color:var(--primary);box-shadow:0 0 0 2px var(--primary-light)}
.lm-card .icon{font-size:28px;margin-bottom:10px;width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--primary-light);border-radius:10px}
.lm-card h3{font-size:15px;font-weight:700;color:var(--neutral-800);margin-bottom:4px}
.lm-card p{font-size:13px;color:var(--neutral-400);line-height:1.5;margin-bottom:8px}
.lm-card .lm-learn{font-size:12px;font-weight:600;color:var(--primary)}
.lm-detail{padding:32px 0;border-top:1px solid var(--neutral-200);margin-top:0;scroll-margin-top:80px}
.lm-detail-header{display:flex;gap:16px;align-items:center;margin-bottom:20px}
.lm-detail-header .icon{font-size:32px;width:48px;height:48px;background:var(--primary-light);border-radius:10px;display:flex;align-items:center;justify-content:center}
.lm-detail-header h2{font-size:22px;font-weight:700;color:var(--neutral-800);margin:0}
.lm-detail-header .tagline{font-size:14px;color:var(--neutral-400);margin:2px 0 0}
.lm-detail-body{display:flex;gap:24px;flex-wrap:wrap}
.lm-detail-main{flex:1;min-width:280px}
.lm-sidebar{flex:0 0 220px;background:var(--neutral-50);border-radius:10px;padding:20px;border:1px solid var(--neutral-200);font-size:13px;color:var(--neutral-600)}
.lm-sidebar h4{font-size:13px;font-weight:700;color:var(--neutral-800);margin-bottom:10px;text-transform:uppercase;letter-spacing:.5px}
.lm-sidebar ul{list-style:none;padding:0}
.lm-sidebar li{margin-bottom:6px;display:flex;align-items:center;gap:6px}
.lm-sidebar li::before{content:'\2713';color:var(--success);font-weight:700}
.lm-badge-best{background:#f0fdf4;border-radius:8px;padding:14px;margin-bottom:14px}
.lm-badge-best .label{font-size:11px;font-weight:600;color:var(--success);text-transform:uppercase;letter-spacing:1px;margin-bottom:4px}
.lm-badge-best p{font-size:13px;color:#166534;margin:0}
.lm-badge-impl{background:#fffbeb;border-radius:8px;padding:14px}
.lm-badge-impl .label{font-size:11px;font-weight:600;color:var(--warning);text-transform:uppercase;letter-spacing:1px;margin-bottom:4px}
.lm-badge-impl p{font-size:13px;color:#92400e;margin:0}
@media(max-width:640px){
  .lm-grid{grid-template-columns:1fr}
  .lm-detail-body{flex-direction:column}
  .lm-sidebar{flex-basis:auto}
}