:root { --primary: #4f46e5; --primary-dark: #3730a3; --secondary: #0d9488; --bg-main: #f8fafc; --bg-card: #ffffff; --text-main: #0f172a; --text-muted: #64748b; --border: #cbd5e1; }
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Helvetica Neue', Arial, 'PingFang HK', 'Microsoft JhengHei', sans-serif; color: var(--text-main); background: var(--bg-main); line-height: 1.6; font-size: 16px; }
a { text-decoration: none; transition: all 0.2s ease-in-out; }
.site-header { background-color: var(--bg-card); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 1000; box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05); }
.header-container { max-width: 1200px; margin: 0 auto; padding: 1.2rem 5%; display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.6rem; font-weight: 800; color: var(--primary-dark); display: flex; align-items: center; gap: 0.5rem; letter-spacing: -0.5px; }
.logo-icon { font-size: 1.8rem; }
.main-nav { display: flex; align-items: center; gap: 2rem; }
.main-nav a { color: var(--text-main); font-weight: 600; font-size: 1.05rem; }
.main-nav a:hover { color: var(--primary); }
.nav-cta { background-color: var(--primary); color: #ffffff !important; padding: 0.6rem 1.5rem; border-radius: 8px; box-shadow: 0 4px 6px rgba(79, 70, 229, 0.3); }
.nav-cta:hover { background-color: var(--primary-dark); transform: translateY(-2px); }
.container { max-width: 1200px; margin: 2rem auto; padding: 0 5%; }
.container-narrow { max-width: 850px; margin: 2.5rem auto; padding: 3rem; background: var(--bg-card); border-radius: 16px; box-shadow: 0 10px 25px rgba(0,0,0,0.03); border: 1px solid var(--border); }
.hero { background: linear-gradient(145deg, var(--primary-dark) 0%, var(--primary) 100%); color: white; padding: 6rem 5%; text-align: center; }
.hero h1 { font-size: 3rem; margin-bottom: 1.5rem; font-weight: 800; line-height: 1.2; }
.hero p { font-size: 1.25rem; margin-bottom: 2.5rem; color: #e0e7ff; max-width: 700px; margin-left: auto; margin-right: auto; }
.search-container { max-width: 650px; margin: 0 auto; display: flex; box-shadow: 0 10px 25px rgba(0,0,0,0.2); border-radius: 12px; overflow: hidden; background: #fff; border: 2px solid transparent; transition: border-color 0.3s; }
.search-container:focus-within { border-color: var(--secondary); }
.search-container input { flex: 1; padding: 1.2rem; font-size: 1.1rem; border: none; outline: none; color: var(--text-main); }
.search-container button { padding: 1.2rem 2.5rem; background: var(--secondary); color: white; border: none; font-size: 1.1rem; font-weight: bold; cursor: pointer; }
.search-container button:hover { background: #0f766e; }
.breadcrumbs { display: inline-block; background: var(--bg-main); padding: 0.5rem 1.2rem; border-radius: 6px; font-size: 0.9rem; color: var(--text-muted); margin-bottom: 2rem; }
.breadcrumbs a { color: var(--primary); font-weight: 600; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.8rem; }
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 2rem; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); border-top: 4px solid var(--primary); }
.card:hover { transform: translateY(-5px); box-shadow: 0 12px 20px rgba(0,0,0,0.05); }
.card h3 a { color: var(--text-main); font-size: 1.4rem; display: block; }
.card:hover h3 a { color: var(--primary); }
.article-title { font-size: 2.2rem; color: var(--text-main); margin-bottom: 2rem; line-height: 1.3; font-weight: 800; }
.content-section { margin-bottom: 3.5rem; }
.content-section h2 { color: var(--primary-dark); font-size: 1.6rem; margin-bottom: 1.2rem; display: flex; align-items: center; gap: 10px; }
.content-section h2::before { content: ""; display: block; width: 6px; height: 24px; background: var(--secondary); border-radius: 4px; }
.content-section p { font-size: 1.1rem; color: var(--text-muted); margin-bottom: 1.5rem; line-height: 1.8; }
.info-list { list-style: none; background: #f1f5f9; padding: 2rem; border-radius: 12px; margin-bottom: 3rem; border: 1px solid var(--border); display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.info-list li { font-size: 1.05rem; display: flex; flex-direction: column; gap: 5px; }
.info-list strong { color: var(--primary-dark); font-size: 0.9rem; text-transform: uppercase; letter-spacing: 1px; }
.cta-section { background: var(--primary-dark); color: white; padding: 4rem 2rem; border-radius: 16px; text-align: center; margin-top: 4rem; position: relative; overflow: hidden; }
.cta-btn { display: inline-block; background: var(--secondary); color: white; padding: 1.2rem 3rem; font-size: 1.2rem; font-weight: bold; border-radius: 8px; margin-top: 2rem; box-shadow: 0 10px 15px -3px rgba(13, 148, 136, 0.4); }
.cta-btn:hover { transform: translateY(-3px); background: #0f766e; color: white; }
.whatsapp-float { position: fixed; bottom: 30px; right: 30px; background-color: #25d366; color: white; padding: 16px 28px; border-radius: 50px; font-size: 1.1rem; font-weight: bold; box-shadow: 0 10px 25px rgba(37, 211, 102, 0.4); z-index: 9999; display: flex; align-items: center; gap: 10px; }
.whatsapp-float:hover { transform: scale(1.05); color: white; }
footer { background: #0f172a; color: #94a3b8; text-align: center; padding: 3rem 2rem; margin-top: 5rem; }

@media (max-width: 768px) {
    .header-container { flex-direction: column; gap: 1rem; padding: 1rem; }
    .main-nav { gap: 1rem; width: 100%; justify-content: center; flex-wrap: wrap; }
    .hero { padding: 4rem 1.5rem; }
    .hero h1 { font-size: 2rem; }
    .hero p { font-size: 1.1rem; }
    .search-container { flex-direction: column; border-radius: 12px; background: transparent; box-shadow: none; }
    .search-container input { padding: 1rem; border-radius: 12px; margin-bottom: 10px; border: 1px solid var(--border); }
    .search-container button { padding: 1rem; border-radius: 12px; width: 100%; }
    .container-narrow { padding: 1.5rem; margin: 1rem; border-radius: 12px; }
    .article-title { font-size: 1.8rem; }
    .info-list { grid-template-columns: 1fr; padding: 1.5rem; gap: 1rem; }
    .whatsapp-float { bottom: 20px; right: 20px; padding: 12px 20px; font-size: 1rem; }
}