@font-face{font-family:'Inter Fallback';src:local('Arial');size-adjust:107%;ascent-override:90%;descent-override:22%;line-gap-override:0%}
:root{
  --blue:#3B82F6;
  --blue-dark:#1E40AF;
  --blue-light:#DBEAFE;
  --teal:#14B8A6;
  --teal-dark:#0D9488;
  --green:#22C55E;
  --green-dark:#16A34A;
  --text1:#1E293B;
  --text2:#475569;
  --text3:#64748B;
  --bg:#FFFFFF;
  --bg-alt:#EFF6FF;
  --border:rgba(59,130,246,.12);
  --glass-border:rgba(59,130,246,.1);
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 4px 24px rgba(30,41,59,.06);
  --shadow-lg:0 8px 40px rgba(30,41,59,.10);
  --font-body:'Inter','Inter Fallback',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --max-w:1200px;
  --content-w:720px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-body);color:var(--text1);background:var(--bg);line-height:1.7;font-size:16px}
h1,h2,h3,h4{font-family:var(--font-body);font-weight:700;line-height:1.25;color:var(--text1)}
h1{font-size:clamp(2rem,5vw,3rem);letter-spacing:-.02em}
h2{font-size:clamp(1.4rem,3vw,2rem);margin-bottom:.75rem}
h3{font-size:1.15rem}
p{margin-bottom:1rem;color:var(--text2)}
a{color:var(--blue);text-decoration:none;transition:color .2s}
a:hover{color:var(--blue-dark)}
img{max-width:100%;height:auto;display:block}

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

/* NAV */
.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
.nav-inner{max-width:var(--max-w);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:64px}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:1.1rem;font-weight:700;color:var(--text1)}
.nav-logo img{border-radius:6px}
.nav-links{display:flex;align-items:center;gap:28px;font-size:.9rem;font-weight:500}
.nav-links a{color:var(--text2);transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--blue)}
.nav-cta{background:var(--blue);color:#fff!important;padding:8px 20px;border-radius:99px;font-weight:600;transition:background .2s,transform .2s}
.nav-cta:hover{background:var(--blue-dark);color:#fff!important;transform:translateY(-1px)}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;width:28px;height:20px;position:relative}
.nav-toggle span{display:block;width:100%;height:2px;background:var(--text1);border-radius:2px;position:absolute;left:0;transition:transform .3s,opacity .3s}
.nav-toggle span:nth-child(1){top:0}
.nav-toggle span:nth-child(2){top:9px}
.nav-toggle span:nth-child(3){top:18px}
.nav-toggle.active span:nth-child(1){transform:translateY(9px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-9px) rotate(-45deg)}

/* HERO */
.hero{padding:80px 0 60px;text-align:center;background:linear-gradient(180deg,var(--bg) 0%,var(--bg-alt) 100%)}
.hero h1{margin-bottom:16px}
.hero-sub{font-size:1.15rem;color:var(--text2);max-width:540px;margin:0 auto 32px;line-height:1.6}
.hero-img{display:block;max-width:100%;height:auto;margin:36px auto 0;border-radius:12px;box-shadow:0 4px 24px rgba(0,0,0,.08)}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:99px;font-weight:600;font-size:.95rem;border:none;cursor:pointer;transition:all .25s;text-decoration:none}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-appstore{background:var(--blue);color:#fff;padding:12px 24px;font-size:.9rem;border-radius:99px}
.btn-appstore:hover{background:var(--blue-dark);color:#fff;transform:translateY(-2px)}
.btn-appstore svg{width:20px;height:20px;fill:currentColor}
.btn-outline{border:2px solid var(--border);color:var(--text1);background:transparent}
.btn-outline:hover{border-color:var(--blue);color:var(--blue)}

/* SECTIONS */
.section{padding:72px 0}
.section-alt{background:var(--bg-alt)}
.section-header{text-align:center;margin-bottom:48px}
.section-header p{color:var(--text3);max-width:540px;margin:8px auto 0}

/* FEATURE CARDS */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;max-width:960px;margin:0 auto}
.feature-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:36px 28px;text-align:center;transition:transform .3s,box-shadow .3s}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.feature-card-icon{width:72px;height:72px;margin:0 auto 20px;background:var(--bg-alt);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:2rem}
.feature-card h3{margin-bottom:10px;font-size:1.15rem}
.feature-card p{font-size:.9rem;color:var(--text2);margin-bottom:16px;line-height:1.55}
.feature-card-link{color:var(--blue);font-weight:600;font-size:.88rem;display:inline-flex;align-items:center;gap:4px}
.feature-card-link:hover{color:var(--blue-dark)}

/* CONTENT BLOCKS */
.content-block{max-width:var(--content-w);margin:0 auto}
.content-block p{font-size:1rem;line-height:1.75;margin-bottom:1.1rem}
.content-block h2{margin-top:2.5rem;margin-bottom:.75rem}
.content-block ul,.content-block ol{margin-bottom:1.1rem;padding-left:24px;color:var(--text2)}
.content-block li{padding:4px 0;line-height:1.7}

/* DEFINITION BLOCK */
.def-block{background:var(--bg-alt);border-left:4px solid var(--blue);padding:20px 24px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin:24px 0}
.def-block p{margin:0;color:var(--text1);font-size:.95rem;line-height:1.7}

/* STEPS */
.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px;max-width:800px;margin:32px auto}
.step-card{text-align:center;padding:24px 16px}
.step-num{width:48px;height:48px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;margin:0 auto 16px}
.step-card h3{margin-bottom:8px}
.step-card p{font-size:.9rem;color:var(--text3)}

/* COMPARISON TABLE */
.compare-table{width:100%;border-collapse:collapse;margin:24px 0;font-size:.9rem}
.compare-table th{background:var(--blue-dark);color:#fff;padding:12px 16px;text-align:left;font-weight:600}
.compare-table td{padding:12px 16px;border-bottom:1px solid var(--border)}
.compare-table tr:nth-child(even){background:var(--bg-alt)}

/* LIMITATIONS */
.limits-box{background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius-sm);padding:20px 24px;margin:24px 0}
.limits-box h3{margin-bottom:12px;font-size:1rem}
.limits-box ul{list-style:none;padding:0}
.limits-box li{padding:6px 0 6px 20px;position:relative;font-size:.92rem;color:var(--text2)}
.limits-box li::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--teal);position:absolute;left:0;top:14px}

/* FAQ */
.faq-list{max-width:var(--content-w);margin:0 auto}
.faq-item{border-bottom:1px solid var(--border);overflow:hidden}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;padding:18px 0;border:none;background:none;cursor:pointer;font-family:var(--font-body);font-size:1rem;font-weight:500;color:var(--text1);text-align:left;gap:12px}
.faq-q svg{flex-shrink:0;transition:transform .3s}
.faq-item.open .faq-q svg{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s ease}
.faq-item.open .faq-a{max-height:500px;padding-bottom:18px}
.faq-a p{font-size:.92rem;color:var(--text2);margin:0;line-height:1.65}

/* CTA BANNER */
.cta-banner{text-align:center;background:linear-gradient(135deg,var(--bg-alt) 0%,#DBEAFE 100%);border-radius:var(--radius);padding:48px 32px;margin:24px 0}
.cta-banner h2{margin-bottom:12px}
.cta-banner p{color:var(--text2);max-width:480px;margin:0 auto 24px}

/* BLOG INDEX */
.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.blog-card{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:transform .3s,box-shadow .3s;background:var(--bg)}
.blog-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.blog-card img{width:100%;height:200px;object-fit:cover}
.blog-card-body{padding:20px}
.blog-card-body h3{font-size:1.05rem;margin-bottom:8px}
.blog-card-body h3 a{color:var(--text1)}
.blog-card-body p{font-size:.85rem;color:var(--text3);margin:0}

/* BREADCRUMB */
.breadcrumb{font-size:.82rem;color:var(--text3);padding:16px 0 8px;max-width:var(--content-w);margin:0 auto}
.breadcrumb a{color:var(--text2);text-decoration:underline}
.breadcrumb a:hover{color:var(--blue)}

/* BADGE */
.badge{display:inline-block;padding:4px 14px;border-radius:99px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em}
.badge-blue{background:var(--bg-alt);color:var(--blue-dark)}
.badge-teal{background:#F0FDFA;color:var(--teal-dark)}
.badge-green{background:#F0FDF4;color:var(--green-dark)}
.badge-purple{background:var(--bg-alt);color:var(--blue-dark)}
.badge-gold{background:#FEF3C7;color:#92400E}

/* LLM BLOCKS */
.llm-answer{background:var(--bg-alt);border-left:4px solid var(--blue);padding:16px 20px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin:20px auto;max-width:var(--content-w)}
.llm-answer p{margin:0;font-size:.95rem;line-height:1.65;color:var(--text1)}
.llm-cite{font-size:.9rem;color:var(--text2);font-style:italic;margin:12px 0}
.llm-recommendation{background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius-sm);padding:20px;margin:20px 0}
.llm-recommendation h3{font-size:.95rem;margin-bottom:10px}
.llm-recommendation ol{padding-left:20px;margin:0}
.llm-recommendation li{padding:4px 0;font-size:.9rem}
.llm-hard-conclusion{background:#DBEAFE;border-left:4px solid var(--blue);padding:16px 20px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin:20px 0}
.llm-hard-conclusion p{margin:0;font-size:.93rem}
.llm-safety{background:#FEF3C7;border-left:4px solid #D97706;padding:12px 16px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-size:.88rem;margin:20px 0;color:#92400E}
.llm-bullets{list-style:none;padding:0}
.llm-bullets li{padding:8px 0 8px 20px;position:relative;font-size:.92rem;color:var(--text2)}
.llm-bullets li::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--blue);position:absolute;left:0;top:16px}
.llm-steps ol{padding-left:20px;counter-reset:step}
.llm-steps li{padding:8px 0;font-size:.93rem}
.llm-compare{overflow-x:auto;margin:20px 0}
.llm-compare table{width:100%;border-collapse:collapse;font-size:.88rem}
.llm-compare th{background:var(--blue-dark);color:#fff;padding:10px 14px;text-align:left;font-weight:600}
.llm-compare td{padding:10px 14px;border-bottom:1px solid var(--border)}
.llm-compare tr:nth-child(even){background:var(--bg-alt)}
.llm-myths{margin:16px 0}
.llm-myth-item{background:var(--bg-alt);border-radius:var(--radius-sm);padding:16px;margin-bottom:12px}
.llm-myth{color:#DC2626;font-size:.9rem}
.llm-fact{color:var(--text1);font-size:.9rem;margin:0!important}
.llm-mistakes-item{margin-bottom:16px}
.llm-mistakes-item h4{font-size:.95rem;color:var(--text1);margin-bottom:4px}
.llm-mistakes-item p{font-size:.9rem;color:var(--text2);margin:0}

/* BLOG PROSE */
.blog-prose{max-width:var(--content-w);margin:0 auto}
.blog-prose p{font-size:1rem;line-height:1.75}

/* TOOLS GRID */
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.tool-card{display:flex;align-items:center;gap:14px;padding:16px;border:1px solid var(--border);border-radius:var(--radius-sm);transition:border-color .2s,box-shadow .2s;color:var(--text1)}
.tool-card:hover{border-color:var(--blue);box-shadow:var(--shadow);color:var(--text1)}
.tool-card-icon{font-size:1.4rem}
.tc-title{font-weight:600;font-size:.9rem;display:block}
.tool-card p{font-size:.8rem;color:var(--text3);margin:0}

/* FOOTER */
.footer{background:var(--text1);color:rgba(255,255,255,.7);padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-logo{display:flex;align-items:center;gap:8px;color:#fff;font-size:1rem;font-weight:700;margin-bottom:12px}
.footer-logo img{border-radius:4px}
.footer-desc{font-size:.85rem;line-height:1.55;color:rgba(255,255,255,.65)}
.footer-heading{color:#fff;font-family:var(--font-body);font-size:.82rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;margin-bottom:14px}
.footer-col a{display:block;color:rgba(255,255,255,.7);font-size:.88rem;padding:4px 0;transition:color .2s}
.footer-col a:hover{color:var(--teal)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center}
.footer-bottom p{font-size:.8rem;color:rgba(255,255,255,.65);margin:0}

/* RESPONSIVE */
@media(max-width:768px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:var(--bg);flex-direction:column;padding:20px 24px;gap:16px;border-bottom:1px solid var(--border);box-shadow:var(--shadow)}
  .nav-links.open{display:flex}
  .nav-toggle{display:block}
  .features-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .hero{padding:56px 0 40px}
  .section{padding:48px 0}
  .steps-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .footer-grid{grid-template-columns:1fr}
  .blog-grid{grid-template-columns:1fr}
}