/* === CSS Variables === */
:root {
  --primary: #d97706;
  --primary-dark: #b45309;
  --primary-light: #fef3c7;
  --accent: #2563eb;
  --accent-light: #dbeafe;
  --bg: #fff;
  --bg-alt: #fffbeb;
  --bg-dark: #1c1004;
  --text: #1a1a1a;
  --text-light: #555;
  --border: #e2e8f0;
  --radius: 12px;
  --shadow: 0 2px 8px rgba(0,0,0,.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,.12);
  --max-w: 1200px;
  --font: 'Segoe UI',system-ui,-apple-system,sans-serif;
}

/* === Reset === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.7;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--primary-dark)}
ul,ol{list-style:none}
button{cursor:pointer;border:none;background:none;font-family:inherit}
table{border-collapse:collapse;width:100%}

/* === Container === */
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}

/* === Navbar === */
.navbar{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.97);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);padding:0 24px}
.nav-inner{max-width:var(--max-w);margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:64px}
.nav-logo{font-weight:700;font-size:1.15rem;color:var(--text);display:flex;align-items:center;gap:2px}
.nav-logo span{color:var(--primary)}
.nav-logo:hover{color:var(--text)}
.nav-links{display:flex;align-items:center;gap:28px;list-style:none}
.nav-links a{color:var(--text-light);font-size:.92rem;font-weight:500;transition:color .2s;position:relative}
.nav-links a:hover,.nav-links a.active{color:var(--primary)}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--primary);transition:width .25s}
.nav-links a:hover::after{width:100%}
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:4px;cursor:pointer}
.nav-toggle span{display:block;width:24px;height:2.5px;background:var(--text);border-radius:2px;transition:transform .3s,opacity .3s}
.nav-toggle.active span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}

/* === Hero === */
.hero{padding:80px 24px 60px;background:linear-gradient(135deg,var(--bg-alt) 0%,#fff 50%,var(--accent-light) 100%)}
.hero-grid{max-width:var(--max-w);margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.hero-content{max-width:560px}
.hero h1{font-size:2.6rem;line-height:1.18;font-weight:800;margin-bottom:20px;color:var(--text)}
.hero h1 .highlight{background:none;border:none;padding:0;margin:0;color:#2563eb;display:inline}
.hero p{font-size:1.15rem;color:var(--text-light);margin-bottom:28px;line-height:1.7}
.hero-image{display:flex;align-items:center;justify-content:center}
.hero-image img{border-radius:var(--radius);box-shadow:var(--shadow-lg)}

/* === Buttons === */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:var(--radius);font-weight:600;font-size:.95rem;transition:all .25s;border:2px solid transparent;cursor:pointer;text-align:center;justify-content:center}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-accent{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-accent:hover{background:#1d4ed8;border-color:#1d4ed8;color:#fff}
.btn-white{background:#fff;color:var(--primary);border-color:#fff}
.btn-white:hover{background:var(--primary-light);border-color:var(--primary-light);color:var(--primary-dark)}
.btn-lg{padding:16px 36px;font-size:1.05rem}

/* === Sections === */
section{padding:72px 24px}
.section-alt{background:var(--bg-alt)}
.section-dark{background:var(--bg-dark);color:#fff}
.section-dark .section-header h2{color:#fff}
.section-dark .section-header p{color:rgba(255,255,255,.7)}
.section-header{text-align:center;max-width:680px;margin:0 auto 48px}
.section-header h2{font-size:2rem;font-weight:700;margin-bottom:12px;color:var(--text)}
.section-header p{color:var(--text-light);font-size:1.05rem}
.section-label{display:inline-block;font-size:.82rem;font-weight:700;text-transform:uppercase;letter-spacing:1.5px;color:var(--primary);margin-bottom:10px}

/* === Grids === */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.text-center{text-align:center}

/* === Stats === */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;max-width:var(--max-w);margin:0 auto}
.stat-card{text-align:center;padding:32px 20px;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow)}
.stat-number{font-size:2.2rem;font-weight:800;color:var(--primary);margin-bottom:4px}
.stat-label{font-size:.92rem;color:var(--text-light)}

/* === Cards === */
.card{background:#fff;border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s;border:1px solid var(--border)}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.card-grid{display:grid;gap:24px}
.card-icon{width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:16px}
.card-accent .card-icon{background:var(--accent-light);color:var(--accent)}
.card-primary .card-icon{background:var(--primary-light);color:var(--primary)}
.card h3{font-size:1.15rem;font-weight:700;margin-bottom:8px}
.card p{color:var(--text-light);font-size:.95rem;line-height:1.65}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;background:#fff}
.faq-question{width:100%;text-align:left;padding:20px 24px;font-size:1.02rem;font-weight:600;display:flex;justify-content:space-between;align-items:center;gap:16px;color:var(--text);background:none;cursor:pointer;transition:background .2s}
.faq-question:hover{background:var(--bg-alt)}
.faq-question::after{content:'+';font-size:1.4rem;font-weight:300;color:var(--primary);transition:transform .3s;flex-shrink:0}
.faq-item.active .faq-question::after{transform:rotate(45deg)}
.faq-item.active .faq-question{background:var(--bg-alt);color:var(--primary)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-answer-inner{padding:0 24px 20px;color:var(--text-light);line-height:1.7;font-size:.95rem}

/* === Blog === */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.blog-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s;border:1px solid var(--border)}
.blog-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.blog-card-img{width:100%;height:200px;object-fit:cover;background:var(--bg-alt)}
.blog-card-body{padding:24px}
.blog-card-body h3{font-size:1.08rem;font-weight:700;margin-bottom:8px;line-height:1.4}
.blog-card-body h3 a{color:var(--text)}
.blog-card-body h3 a:hover{color:var(--primary)}
.blog-card-body p{color:var(--text-light);font-size:.9rem;line-height:1.6;margin-bottom:12px}
.blog-card-body .tag{font-size:.78rem}

/* === CTA Banner === */
.cta-banner{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);border-radius:var(--radius);padding:56px 48px;text-align:center;color:#fff}
.cta-banner h2{font-size:1.8rem;font-weight:700;margin-bottom:12px;color:#fff}
.cta-banner p{font-size:1.05rem;opacity:.9;margin-bottom:28px;max-width:560px;margin-left:auto;margin-right:auto}

/* === Table === */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border);background:#fff}
.table-wrap table{min-width:500px}
.table-wrap th,.table-wrap td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--border);font-size:.93rem}
.table-wrap th{background:var(--bg-alt);font-weight:700;color:var(--text);white-space:nowrap}
.table-wrap tr:last-child td{border-bottom:none}
.table-wrap tr:hover td{background:var(--primary-light)}

/* === Breadcrumbs === */
.breadcrumbs{padding:16px 0;font-size:.85rem;color:var(--text-light)}
.breadcrumbs a{color:var(--primary)}
.breadcrumbs a:hover{color:var(--primary-dark)}
.breadcrumbs span{margin:0 6px;color:var(--border)}

/* === Article === */
.article{max-width:800px;margin:0 auto;padding:40px 0 60px}
.article h1{font-size:2.2rem;font-weight:800;margin-bottom:16px;line-height:1.2}
.article h2{font-size:1.6rem;font-weight:700;margin:40px 0 16px;color:var(--text)}
.article h3{font-size:1.25rem;font-weight:700;margin:32px 0 12px;color:var(--text)}
.article p{margin-bottom:16px;line-height:1.8;color:var(--text-light)}
.article ul,.article ol{margin:0 0 20px 24px;list-style:disc}
.article ol{list-style:decimal}
.article li{margin-bottom:8px;line-height:1.7;color:var(--text-light)}
.article blockquote{border-left:4px solid var(--primary);padding:16px 24px;margin:24px 0;background:var(--primary-light);border-radius:0 var(--radius) var(--radius) 0;font-style:italic;color:var(--text)}
.article img{border-radius:var(--radius);margin:24px 0;box-shadow:var(--shadow)}

/* === TOC === */
.toc{background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius);padding:24px 28px;margin:24px 0 32px}
.toc h3{font-size:1rem;font-weight:700;margin-bottom:12px;color:var(--text)}
.toc ul{list-style:none;margin:0;padding:0}
.toc li{margin-bottom:6px}
.toc a{color:var(--primary);font-size:.92rem}
.toc a:hover{color:var(--primary-dark)}

/* === Meta & Tags === */
.meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:.88rem;color:var(--text-light);margin-bottom:20px}
.tag{display:inline-block;padding:4px 12px;border-radius:20px;font-size:.82rem;font-weight:600;background:var(--primary-light);color:var(--primary-dark)}
.tag-accent{background:var(--accent-light);color:var(--accent)}

/* === Highlight === */
.highlight{background:var(--primary-light);border-left:4px solid var(--primary);padding:20px 24px;border-radius:0 var(--radius) var(--radius) 0;margin:24px 0}
h1 .highlight,h2 .highlight,h3 .highlight{background:none;border:none;padding:0;margin:0;color:var(--primary);display:inline}

/* === Badge === */
.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px}
.badge-primary{background:var(--primary-light);color:var(--primary-dark)}
.badge-accent{background:var(--accent-light);color:var(--accent)}
.badge-success{background:#dcfce7;color:#166534}
.badge-warning{background:#fef9c3;color:#854d0e}

/* === Steps === */
.steps{counter-reset:step}
.step{counter-increment:step;position:relative;padding-left:72px;margin-bottom:36px}
.step::before{content:counter(step);position:absolute;left:0;top:0;width:48px;height:48px;border-radius:50%;background:var(--primary);color:#fff;font-size:1.2rem;font-weight:700;display:flex;align-items:center;justify-content:center}
.step h3{font-size:1.1rem;font-weight:700;margin-bottom:6px}
.step p{color:var(--text-light);font-size:.95rem;line-height:1.7}

/* === Comparison === */
.comparison-box{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:24px 0}
.comparison-col{padding:28px;border-radius:var(--radius);border:1px solid var(--border)}
.comparison-col.pro{background:#f0fdf4;border-color:#bbf7d0}
.comparison-col.contra{background:#fef2f2;border-color:#fecaca}
.comparison-col h3{font-size:1.05rem;font-weight:700;margin-bottom:12px}
.comparison-col ul{list-style:disc;margin-left:20px}
.comparison-col li{margin-bottom:6px;font-size:.93rem;color:var(--text-light)}

/* === Footer === */
.footer{background:var(--bg-dark);color:rgba(255,255,255,.7);padding:60px 24px 0}
.footer a{color:rgba(255,255,255,.7);transition:color .2s}
.footer a:hover{color:var(--primary)}
.footer-grid{max-width:var(--max-w);margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand{font-size:1.1rem;font-weight:700;color:#fff;margin-bottom:12px}
.footer-brand span{color:var(--primary)}
.footer h4{font-size:.9rem;font-weight:700;color:#fff;margin-bottom:16px;text-transform:uppercase;letter-spacing:1px}
.footer ul{list-style:none}
.footer li{margin-bottom:8px}
.footer li a{font-size:.9rem}
.footer-bottom{max-width:var(--max-w);margin:0 auto;padding:20px 0;display:flex;justify-content:space-between;align-items:center;font-size:.82rem}

/* === Animations === */
.fade-in{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* === Responsive === */
@media(max-width:1024px){
  .hero h1{font-size:2.1rem}
  .grid-4{grid-template-columns:repeat(3,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-toggle{display:flex}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--border);padding:16px 24px;gap:0;box-shadow:var(--shadow-lg);list-style:none}
  .nav-links.active{display:flex}
  .nav-links li{padding:10px 0;border-bottom:1px solid var(--border);list-style:none}
  .nav-links li:last-child{border-bottom:none}
  .hero-grid{grid-template-columns:1fr;text-align:center}
  .hero-content{margin:0 auto}
  .hero-image{display:none}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .blog-grid{grid-template-columns:1fr}
  .comparison-box{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px;text-align:center}
  section{padding:48px 24px}
}
@media(max-width:480px){
  .hero h1{font-size:1.65rem}
  .hero{padding:48px 16px 40px}
  .container{padding:0 16px}
  .stats-grid{grid-template-columns:1fr}
  .grid-4{grid-template-columns:1fr}
  .btn-lg{padding:14px 24px;font-size:.95rem}
  .article h1{font-size:1.7rem}
}