*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#f5f7fa;--card:#fff;--text:#1a1a2e;--muted:#545d66;--accent:#0066cc;--accent2:#004999;--accent-light:#e8f1fd;--border:#e2e8f0;--green:#16a34a;--orange:#ea580c;--red:#dc2626;--radius:12px;--shadow:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);--shadow-md:0 4px 16px rgba(0,0,0,.08);--shadow-lg:0 8px 30px rgba(0,0,0,.12)}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:17px}
a{color:var(--accent);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent2)}
p a,li a,.faq-a a{text-decoration:underline;text-underline-offset:2px}
p a:hover,li a:hover,.faq-a a:hover{text-decoration:underline}
img{max-width:100%}

/* Header */
.header{background:var(--text);color:#fff;padding:.85rem 0;position:sticky;top:0;z-index:100;box-shadow:0 2px 20px rgba(0,0,0,.2);backdrop-filter:blur(8px)}
.header-inner{display:flex;align-items:center;justify-content:space-between}
.logo{font-size:1.4rem;font-weight:800;color:#fff;letter-spacing:-.5px;white-space:nowrap}
.logo span{color:#4d9fff}
.logo:hover{color:#fff;text-decoration:none;opacity:.9}
nav{display:flex;gap:.25rem}
nav a{color:rgba(255,255,255,.85);padding:.4rem .75rem;font-size:.88rem;font-weight:500;border-radius:6px;transition:all .2s}
nav a:hover{color:#fff;background:rgba(255,255,255,.1);text-decoration:none}

/* Layout */
.wrap{max-width:900px;margin:0 auto;padding:0 1.25rem}
.content{padding:2.5rem 0}
.breadcrumb{font-size:.85rem;color:var(--muted);margin-bottom:1.5rem}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--accent)}

/* Hero */
.hero{background:linear-gradient(135deg,#1a1a2e 0%,#16213e 50%,#0f3460 100%);color:#fff;padding:3.5rem 0 3rem;text-align:center;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 30% 50%,rgba(77,153,255,.15) 0%,transparent 50%);pointer-events:none}
.hero h1{font-size:2.2rem;font-weight:800;line-height:1.25;margin-bottom:1rem;position:relative}
.hero-sub{font-size:1.1rem;color:rgba(255,255,255,.88);max-width:650px;margin:0 auto;line-height:1.6;position:relative}

/* Intro */
.intro{background:var(--card);border-radius:var(--radius);padding:1.75rem;margin-bottom:2.5rem;box-shadow:var(--shadow);border:1px solid var(--border)}
.intro p{margin-bottom:.75rem;color:#333}
.intro p:last-child{margin-bottom:0}

/* Typography */
h1{font-size:2rem;line-height:1.25;margin-bottom:.75rem;color:var(--text);font-weight:800}
h2{font-size:1.5rem;margin:2.5rem 0 1rem;font-weight:700;color:var(--text);position:relative}
h3{font-size:1.15rem;margin:1.5rem 0 .5rem;font-weight:600}
p{margin-bottom:1rem}
article h2{padding-top:1.25rem;border-top:2px solid var(--border)}
.subtitle{font-size:1.1rem;color:var(--muted);margin-bottom:2rem}
.update{font-size:.8rem;color:var(--muted);margin-bottom:1.5rem;display:inline-block;background:var(--bg);padding:.25rem .75rem;border-radius:20px}

/* Price table */
.price-table{width:100%;border-collapse:collapse;margin:1.5rem 0;background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border)}
.price-table th{background:linear-gradient(135deg,#1a1a2e,#16213e);color:#fff;padding:.85rem 1rem;text-align:left;font-weight:600;font-size:.9rem}
.price-table td{padding:.8rem 1rem;border-bottom:1px solid var(--border);font-size:.95rem}
.price-table tr:last-child td{border-bottom:none}
.price-table tr:hover{background:var(--accent-light)}
.price-low{color:var(--green);font-weight:700}
.price-mid{color:var(--orange);font-weight:700}
.price-high{color:var(--red);font-weight:700}
.table-note{font-size:.8rem;color:var(--muted);margin-top:.5rem;font-style:italic}

/* Info boxes */
.tip-box{background:var(--accent-light);border-left:4px solid var(--accent);padding:1.25rem 1.5rem;margin:1.5rem 0;border-radius:0 var(--radius) var(--radius) 0;font-size:.95rem}
.warn-box{background:#fff7ed;border-left:4px solid var(--orange);padding:1.25rem 1.5rem;margin:1.5rem 0;border-radius:0 var(--radius) var(--radius) 0;font-size:.95rem}

/* FAQ */
.faq{margin:2rem 0}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:.75rem;overflow:hidden;background:var(--card);transition:box-shadow .2s}
.faq-item:hover{box-shadow:var(--shadow)}
.faq-q{font-weight:600;padding:1rem 1.25rem;cursor:pointer;background:var(--card);display:flex;justify-content:space-between;align-items:center;gap:1rem}
.faq-q::after{content:"+";font-size:1.3rem;color:var(--accent);font-weight:700;transition:transform .2s;flex-shrink:0}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{padding:0 1.25rem;max-height:0;overflow:hidden;transition:all .3s ease;font-size:.95rem}
.faq-item.open .faq-a{padding:0 1.25rem 1rem;max-height:500px}

/* CTA box */
.cta-box{background:linear-gradient(135deg,#0066cc,#004999);color:#fff;padding:2rem;border-radius:var(--radius);margin:2rem 0;text-align:center;box-shadow:var(--shadow-md)}
.cta-box h3{color:#fff;margin:0 0 .5rem;border:none;padding:0;font-size:1.3rem}
.cta-box p{color:rgba(255,255,255,.9)}
.cta-box a{display:inline-block;background:#fff;color:var(--accent);padding:.7rem 2rem;border-radius:8px;font-weight:700;margin-top:.75rem;transition:transform .2s,box-shadow .2s}
.cta-box a:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(0,0,0,.2);text-decoration:none}

/* Category cards (homepage) */
.categories{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1rem;margin:1.5rem 0 2.5rem}
.cat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;transition:all .25s ease;display:block;color:var(--text);position:relative;overflow:hidden}
.cat-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),#4d9fff);transform:scaleX(0);transition:transform .25s ease;transform-origin:left}
.cat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);text-decoration:none;border-color:var(--accent)}
.cat-card:hover::before{transform:scaleX(1)}
.cat-card h3{margin:0 0 .25rem;font-size:1.05rem;border:none;padding:0}
.cat-card p{font-size:.85rem;color:var(--muted);margin:0}
.cat-icon{font-size:2.2rem;margin-bottom:.75rem}
.cat-examples{display:block;font-size:.78rem;color:#555;margin-top:.5rem;line-height:1.4}

/* How it works */
.how-it-works{margin:1rem 0 2.5rem}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.25rem;margin-top:1rem}
.step{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;text-align:center;box-shadow:var(--shadow)}
.step-num{width:40px;height:40px;background:linear-gradient(135deg,var(--accent),#4d9fff);color:#fff;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:1.1rem;margin-bottom:.75rem}
.step h3{margin:.5rem 0;font-size:1rem}
.step p{font-size:.9rem;color:#444;margin:0}

/* Popular links */
.popular{margin:0 0 1rem}
.popular-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:.75rem;margin-top:1rem}
.popular-link{display:block;background:var(--card);border:1px solid var(--border);padding:.85rem 1.25rem;border-radius:var(--radius);font-weight:500;font-size:.95rem;transition:all .2s;position:relative;padding-left:2rem}
.popular-link::before{content:"\2192";position:absolute;left:1rem;color:var(--accent);transition:transform .2s}
.popular-link:hover{border-color:var(--accent);background:var(--accent-light);text-decoration:none;transform:translateX(3px)}
.popular-link:hover::before{transform:translateX(3px)}

/* Lists */
article ul,article ol{margin:1rem 0;padding-left:1.5rem}
article li{margin-bottom:.5rem}

/* Footer */
.footer{background:var(--text);color:rgba(255,255,255,.75);padding:3rem 0 1.5rem;margin-top:3rem;font-size:.88rem}
.footer a{color:rgba(255,255,255,.8);transition:color .2s}
.footer a:hover{color:#fff;text-decoration:none}
.footer h4,.footer-title{color:#fff;font-size:.95rem;margin-bottom:.75rem;font-weight:600}
.footer p{line-height:1.6}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:2.5rem;margin-bottom:2rem}
.footer-cat-links{display:flex;flex-direction:column;gap:.4rem}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:1.5rem;text-align:center;font-size:.8rem}

/* Amazon box */
.amazon-box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;margin:2rem 0;box-shadow:var(--shadow);position:relative;overflow:hidden}
.amazon-box::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,#ff9900,#ffad33)}
.amazon-box-top{display:flex;align-items:center;gap:.5rem;margin-bottom:1rem;padding-bottom:.75rem;border-bottom:1px solid var(--border)}
.amazon-box-top svg{color:#ff9900;flex-shrink:0}
.amazon-box-top span{font-weight:700;font-size:.9rem;color:var(--text)}
.amazon-box-badge{margin-left:auto;background:var(--bg);color:var(--muted);font-size:.65rem;font-weight:600;padding:.2rem .6rem;border-radius:20px}
.amazon-box-body{margin-bottom:1.25rem}
.amazon-box-body h3{margin:0 0 .4rem;font-size:1.1rem;color:var(--text);border:none;padding:0;font-weight:700}
.amazon-box-body p{font-size:.9rem;color:#555;margin:0 0 .5rem;line-height:1.5}
.amazon-box-brands{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:.5rem}
.amazon-box-brands span{background:var(--bg);border:1px solid var(--border);padding:.2rem .6rem;border-radius:6px;font-size:.75rem;font-weight:600;color:var(--text)}
.amazon-box a.amazon-btn{display:inline-flex;align-items:center;gap:.4rem;background:linear-gradient(180deg,#ffd814,#f7ca00);color:#0f1111;padding:.65rem 1.75rem;border-radius:8px;font-weight:700;font-size:.9rem;transition:all .2s;text-decoration:none;border:1px solid #e8b800}
.amazon-box a.amazon-btn:hover{background:linear-gradient(180deg,#f7ca00,#e8b800);transform:translateY(-1px);box-shadow:0 3px 10px rgba(232,164,48,.25);text-decoration:none;color:#0f1111}
.amazon-box a.amazon-btn svg{flex-shrink:0}

/* Ad slots */
.ad-slot{background:var(--border);min-height:90px;display:flex;align-items:center;justify-content:center;margin:2rem 0;border-radius:var(--radius);font-size:.8rem;color:var(--muted)}

/* Search */
.search-box{max-width:500px;margin:1.5rem auto;position:relative}
.search-box input{width:100%;padding:.85rem 1.25rem;border:2px solid var(--border);border-radius:50px;font-size:1rem;outline:none;transition:all .2s;background:var(--card)}
.search-box input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(0,102,204,.15)}

/* Article cards (category pages) */
.article-list{display:grid;gap:1rem;margin:1.5rem 0}
.article-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem 1.5rem;display:block;color:var(--text);transition:all .2s}
.article-card:hover{border-color:var(--accent);box-shadow:var(--shadow);text-decoration:none;transform:translateX(4px)}
.article-card h3{margin:0 0 .25rem;font-size:1rem;border:none;padding:0}
.article-card p{margin:0;font-size:.88rem;color:var(--muted)}

/* Responsive */
@media(max-width:768px){
.footer-grid{grid-template-columns:1fr;gap:1.5rem}
.steps{grid-template-columns:1fr}
}
@media(max-width:600px){
h1{font-size:1.5rem}
h2{font-size:1.25rem}
body{font-size:16px}
.header-inner{flex-direction:column;gap:.5rem}
nav{flex-wrap:wrap;justify-content:center}
nav a{margin:0;padding:.3rem .5rem;font-size:.8rem}
.hero{padding:2.5rem 0 2rem}
.hero h1{font-size:1.6rem}
.hero-sub{font-size:.95rem}
.categories{grid-template-columns:1fr}
.popular-grid{grid-template-columns:1fr}
.price-table{font-size:.85rem}
.price-table td,.price-table th{padding:.5rem .75rem}
.intro{padding:1.25rem}
}