/* ===== VARIABLES ===== */
:root{
  --primary:#0d9488;
  --primary-dark:#0f766e;
  --primary-light:#ccfbf1;
  --accent:#e11d48;
  --accent-light:#ffe4e6;
  --text:#1a1a1a;
  --text-light:#555;
  --bg:#fff;
  --bg-alt:#f0fdfa;
  --bg-dark:#0c1f1d;
  --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-dark);text-decoration:none;transition:color .2s}
a:hover{color:var(--primary)}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{line-height:1.3;font-weight:700;color:var(--text)}
h1{font-size:clamp(2rem,4vw,3rem)}
h2{font-size:clamp(1.5rem,3vw,2.25rem)}
h3{font-size:clamp(1.2rem,2.5vw,1.5rem)}
p{margin-bottom:1rem}

/* ===== CONTAINER ===== */
.container{max-width:var(--max-w);margin:0 auto;padding:0 1.5rem}

/* ===== NAVBAR ===== */
.navbar{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:box-shadow .3s}
.navbar.scrolled{box-shadow:var(--shadow)}
.navbar .container,.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;max-width:var(--max-w);margin:0 auto;padding:0 1.5rem}
.nav-logo{font-size:1.25rem;font-weight:800;color:var(--text)}
.nav-logo span{color:var(--primary)}
.nav-links{display:flex;gap:1.75rem;align-items:center}
.nav-links a{font-size:.95rem;font-weight:500;color:var(--text);position:relative;padding:.25rem 0}
.nav-links a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--primary);transition:width .3s}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-links a:hover{color:var(--primary)}
.hamburger,.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:.5rem;background:none;border:none;font-size:1.5rem;color:var(--text)}
.hamburger span{width:24px;height:2px;background:var(--text);transition:all .3s}
.hamburger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.75rem;border-radius:var(--radius);font-weight:600;font-size:1rem;cursor:pointer;border:2px solid transparent;transition:all .25s;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(-2px);box-shadow:var(--shadow-lg)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.btn-accent{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-accent:hover{background:#be123c;border-color:#be123c;color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-lg{padding:1rem 2.5rem;font-size:1.125rem;border-radius:14px}
.btn-white{background:#fff;color:var(--primary-dark);border-color:#fff}
.btn-white:hover{background:var(--primary-light);transform:translateY(-2px)}

/* ===== HERO ===== */
.hero{background:linear-gradient(135deg,var(--bg-alt) 0%,#e0f7f5 50%,var(--primary-light) 100%);padding:5rem 0 4rem;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,rgba(13,148,136,.1) 0%,transparent 70%);border-radius:50%}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.hero-content{position:relative;z-index:1}
.hero h1{margin-bottom:1.25rem;color:var(--text)}
.hero h1 strong{color:var(--primary)}
.hero p.lead{font-size:1.2rem;color:var(--text-light);margin-bottom:2rem;line-height:1.8}
.hero-badges{display:flex;flex-wrap:wrap;gap:.75rem;margin-bottom:2rem}
.hero-badges .badge{display:inline-flex;align-items:center;gap:.4rem;background:#fff;border:1px solid var(--border);padding:.5rem 1rem;border-radius:50px;font-size:.9rem;font-weight:500;box-shadow:var(--shadow)}
.hero-buttons{display:flex;gap:1rem;flex-wrap:wrap}
.hero-image{position:relative;z-index:1}
.hero-image img{border-radius:var(--radius);box-shadow:var(--shadow-lg)}

/* ===== SECTIONS ===== */
.section{padding:5rem 0}
.section-alt{padding:5rem 0;background:var(--bg-alt)}
.section-dark{padding:5rem 0;background:var(--bg-dark);color:#fff}
.section-dark h2,.section-dark h3{color:#fff}
.section-dark p{color:#ccc}
.section-header{text-align:center;max-width:700px;margin:0 auto 3rem}
.section-header p{color:var(--text-light);font-size:1.1rem}

/* ===== GRIDS ===== */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:2rem}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem}

/* ===== CARDS ===== */
.card{background:#fff;border-radius:var(--radius);padding:2rem;border:1px solid var(--border);transition:transform .3s,box-shadow .3s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.card-icon{width:56px;height:56px;background:var(--primary-light);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:1.25rem}
.card h3{margin-bottom:.75rem}
.card p{color:var(--text-light);margin-bottom:0}

/* ===== STATS ===== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;padding:3rem 0}
.stat{text-align:center}
.stat-number{font-size:2.5rem;font-weight:800;color:var(--primary);display:block}
.stat-label{font-size:.95rem;color:var(--text-light);margin-top:.25rem}

/* ===== FAQ ===== */
.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:1rem;overflow:hidden;background:#fff}
.faq-question{display:flex;justify-content:space-between;align-items:center;padding:1.25rem 1.5rem;cursor:pointer;font-weight:600;font-size:1.05rem;background:none;border:none;width:100%;text-align:left;color:var(--text);font-family:var(--font);transition:background .2s}
.faq-question:hover{background:var(--bg-alt)}
.faq-question::after{content:'+';font-size:1.5rem;font-weight:300;color:var(--primary);transition:transform .3s;flex-shrink:0;margin-left:1rem}
.faq-item.active .faq-question::after{content:'−'}
.faq-item.active .faq-question{background:var(--bg-alt);color:var(--primary-dark)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .3s}
.faq-answer-inner{padding:0 1.5rem 1.5rem;color:var(--text-light);line-height:1.8}
.faq-item.active .faq-answer{max-height:600px}

/* ===== BLOG ===== */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}
.blog-card{background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);transition:transform .3s,box-shadow .3s}
.blog-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.blog-card img{width:100%;height:200px;object-fit:cover}
.blog-card-body{padding:1.5rem}
.blog-card-body h3{font-size:1.15rem;margin-bottom:.5rem}
.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:.95rem;margin-bottom:1rem}
.blog-card .meta{display:flex;gap:1rem;font-size:.85rem;color:var(--text-light)}

/* ===== CTA BANNER ===== */
.cta-banner{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);border-radius:var(--radius);padding:3.5rem;text-align:center;color:#fff;margin:2rem 0}
.cta-banner h2{color:#fff;margin-bottom:1rem}
.cta-banner p{color:rgba(255,255,255,.9);font-size:1.1rem;margin-bottom:2rem;max-width:600px;margin-left:auto;margin-right:auto}

/* ===== TABLE ===== */
.table-wrap{overflow-x:auto;margin:2rem 0;border-radius:var(--radius);border:1px solid var(--border)}
.table-wrap table{width:100%;border-collapse:collapse;min-width:500px}
.table-wrap th{background:var(--bg-alt);font-weight:600;text-align:left;padding:1rem 1.25rem;border-bottom:2px solid var(--border);color:var(--text);font-size:.95rem}
.table-wrap td{padding:.875rem 1.25rem;border-bottom:1px solid var(--border);font-size:.95rem;color:var(--text-light)}
.table-wrap tr:last-child td{border-bottom:none}
.table-wrap tr:hover td{background:var(--bg-alt)}

/* ===== BREADCRUMBS ===== */
.breadcrumbs{padding:1rem 0;font-size:.9rem}
.breadcrumbs a{color:var(--text-light)}
.breadcrumbs a:hover{color:var(--primary)}
.breadcrumbs span{color:var(--text-light);margin:0 .5rem}
.breadcrumbs strong{color:var(--text);font-weight:600}

/* ===== ARTICLE ===== */
.article{max-width:800px;margin:0 auto;padding:3rem 1.5rem}
.article h1{margin-bottom:1rem}
.article h2{margin-top:2.5rem;margin-bottom:1rem;padding-top:1rem;border-top:1px solid var(--border)}
.article h3{margin-top:2rem;margin-bottom:.75rem}
.article p{color:var(--text-light);line-height:1.8}
.article ul,.article ol{margin:1rem 0 1.5rem 1.5rem;color:var(--text-light)}
.article ul{list-style:disc}
.article ol{list-style:decimal}
.article li{margin-bottom:.5rem;line-height:1.7}
.article blockquote{border-left:4px solid var(--primary);padding:1rem 1.5rem;margin:1.5rem 0;background:var(--bg-alt);border-radius:0 var(--radius) var(--radius) 0;color:var(--text-light);font-style:italic}
.article a{color:var(--primary);text-decoration:underline}

/* ===== TOC ===== */
.toc{background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem 2rem;margin:2rem 0}
.toc h3{font-size:1rem;margin-bottom:.75rem;color:var(--text)}
.toc ul{list-style:none;margin:0;padding:0}
.toc li{margin-bottom:.4rem}
.toc a{font-size:.95rem;color:var(--primary-dark)}
.toc a:hover{color:var(--primary);text-decoration:underline}

/* ===== BADGES & TAGS ===== */
.badge{display:inline-flex;align-items:center;gap:.3rem;padding:.3rem .75rem;border-radius:50px;font-size:.85rem;font-weight:500}
.badge-primary{background:var(--primary-light);color:var(--primary-dark)}
.badge-accent{background:var(--accent-light);color:var(--accent)}
.tag{display:inline-block;padding:.25rem .75rem;border-radius:50px;font-size:.8rem;font-weight:500;background:var(--bg-alt);color:var(--primary-dark);border:1px solid var(--border)}
.tag:hover{background:var(--primary-light);border-color:var(--primary)}
.meta{font-size:.9rem;color:var(--text-light);display:flex;align-items:center;gap:.5rem}

/* ===== HIGHLIGHT ===== */
.highlight{background:linear-gradient(135deg,var(--primary-light) 0%,#e0f7f5 100%);border-left:4px solid var(--primary);padding:1.5rem 2rem;border-radius:0 var(--radius) var(--radius) 0;margin:2rem 0}
.highlight p{margin-bottom:0;color:var(--text)}
.highlight strong{color:var(--primary-dark)}

/* ===== FOOTER ===== */
.footer{background:var(--bg-dark);color:#ccc;padding:4rem 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:2.5rem;padding-bottom:3rem}
.footer h4{color:#fff;font-size:1rem;margin-bottom:1.25rem}
.footer p{font-size:.9rem;line-height:1.7;color:#aaa}
.footer ul{list-style:none}
.footer li{margin-bottom:.6rem}
.footer a{color:#aaa;font-size:.9rem;transition:color .2s}
.footer a:hover{color:var(--primary)}
.footer-brand{font-size:1.2rem;font-weight:800;color:#fff;margin-bottom:.75rem}
.footer-brand span{color:var(--primary)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:1.5rem 0;display:flex;justify-content:space-between;align-items:center;font-size:.85rem;color:#888}
.footer-bottom a{color:#888}
.footer-bottom a:hover{color:var(--primary)}

/* ===== ANIMATIONS ===== */
.fade-in{opacity:0;transform:translateY(20px);transition:opacity .6s,transform .6s}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* ===== RESPONSIVE 1024px ===== */
@media(max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .hero-grid{gap:2rem}
}

/* ===== RESPONSIVE 768px ===== */
@media(max-width:768px){
  .nav-links{position:fixed;top:72px;left:0;right:0;background:#fff;flex-direction:column;padding:2rem;gap:1.25rem;border-bottom:1px solid var(--border);transform:translateY(-120%);transition:transform .3s;box-shadow:var(--shadow-lg)}
  .nav-links.active{transform:translateY(0)}
  .hamburger,.nav-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr}
  .hero-image{display:none}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .blog-grid{grid-template-columns:1fr}
  .cta-banner{padding:2.5rem 1.5rem}
  .section,.section-alt,.section-dark{padding:3rem 0}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:.75rem;text-align:center}
}

/* ===== RESPONSIVE 480px ===== */
@media(max-width:480px){
  .hero{padding:3rem 0 2.5rem}
  h1{font-size:1.75rem}
  .hero-buttons{flex-direction:column}
  .hero-buttons .btn{width:100%}
  .stats{grid-template-columns:1fr 1fr;gap:1.5rem}
  .stat-number{font-size:2rem}
  .card{padding:1.5rem}
  .btn-lg{padding:.875rem 1.75rem;font-size:1rem}
}