* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; background: #f9fbfa; color: #1a2e1f; line-height: 1.6; }
a { color: #1b5e20; text-decoration: none; transition: color 0.3s ease; }
a:hover { text-decoration: underline; color: #0a3d0a; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
header { background: rgba(255,255,255,0.85); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid rgba(208,225,211,0.5); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; flex-wrap: wrap; }
.logo { font-size: 1.5rem; font-weight: 700; color: #1b5e20; display: flex; align-items: center; gap: 8px; }
.logo svg { width: 36px; height: 36px; }
nav a { margin: 0 10px; font-weight: 500; color: #2d4a2e; position: relative; transition: color 0.3s ease; }
nav a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: #1b5e20; transition: width 0.3s ease; }
nav a:hover::after { width: 100%; }
nav a:hover { color: #0a3d0a; text-decoration: none; }
.menu-toggle { display: none; background: none; border: none; font-size: 1.8rem; cursor: pointer; color: #1b5e20; }
.hero { background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 50%, #a5d6a7 100%); padding: 60px 0; 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(27,94,32,0.08) 0%, transparent 60%); pointer-events: none; }
.hero h1 { font-size: 2.6rem; color: #0a3d0a; margin-bottom: 20px; text-shadow: 0 2px 4px rgba(0,0,0,0.05); }
.hero p { font-size: 1.2rem; max-width: 800px; margin: 0 auto 30px; color: #2d4a2e; }
.hero .cta { display: inline-block; background: linear-gradient(135deg, #1b5e20, #2e7d32); color: #fff; padding: 14px 36px; border-radius: 40px; font-weight: 600; box-shadow: 0 4px 15px rgba(27,94,32,0.3); transition: transform 0.3s ease, box-shadow 0.3s ease; }
.hero .cta:hover { transform: translateY(-3px); box-shadow: 0 8px 25px rgba(27,94,32,0.4); text-decoration: none; }
section { padding: 50px 0; }
.section-title { font-size: 2rem; text-align: center; margin-bottom: 40px; color: #0a3d0a; position: relative; }
.section-title::after { content: ''; display: block; width: 60px; height: 3px; background: linear-gradient(90deg, #1b5e20, #66bb6a); margin: 12px auto 0; border-radius: 2px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 25px; }
.grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 20px; }
.card { background: rgba(255,255,255,0.75); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); border-radius: 16px; padding: 24px; box-shadow: 0 4px 12px rgba(0,0,0,0.04); border: 1px solid rgba(224,237,226,0.6); transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease; }
.card:hover { transform: translateY(-5px); box-shadow: 0 12px 30px rgba(0,0,0,0.08); border-color: #a5d6a7; }
.card h3 { color: #1b5e20; margin-bottom: 10px; }
.card p { color: #3a5a3a; }
.icon-svg { width: 48px; height: 48px; margin-bottom: 12px; transition: transform 0.3s ease; }
.card:hover .icon-svg { transform: scale(1.1); }
.faq-item { border-bottom: 1px solid rgba(208,225,211,0.6); padding: 16px 0; transition: background 0.3s ease; }
.faq-item:hover { background: rgba(232,245,233,0.3); border-radius: 8px; }
.faq-question { font-weight: 600; cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
.faq-question span { transition: transform 0.3s ease; }
.faq-item.open .faq-question span { transform: rotate(180deg); }
.faq-answer { margin-top: 10px; display: none; color: #2d4a2e; }
.faq-item.open .faq-answer { display: block; animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }
.howto-step { margin-bottom: 20px; padding-left: 20px; border-left: 3px solid #1b5e20; transition: border-color 0.3s ease; }
.howto-step:hover { border-color: #66bb6a; }
.howto-step h4 { color: #1b5e20; }
.article-list article { margin-bottom: 30px; padding-bottom: 20px; border-bottom: 1px solid rgba(208,225,211,0.6); transition: transform 0.3s ease; }
.article-list article:hover { transform: translateX(5px); }
.article-list h3 { font-size: 1.3rem; }
.article-list .meta { color: #5a7a5a; font-size: 0.9rem; }
.article-list .readmore { color: #1b5e20; font-weight: 500; position: relative; }
.article-list .readmore::after { content: ' →'; transition: margin-left 0.3s ease; }
.article-list .readmore:hover::after { margin-left: 5px; }
footer { background: #1a2e1f; color: #cfdfd0; padding: 40px 0; }
footer a { color: #b0d0b0; transition: color 0.3s ease; }
footer a:hover { color: #e8f5e9; }
footer .grid-4 { gap: 30px; }
.breadcrumb { padding: 12px 0; font-size: 0.9rem; color: #4a6a4a; }
.breadcrumb a { color: #1b5e20; }
.stat-number { font-size: 2.4rem; font-weight: 700; color: #1b5e20; }
#back-to-top { position: fixed; bottom: 30px; right: 30px; background: linear-gradient(135deg, #1b5e20, #2e7d32); color: #fff; width: 48px; height: 48px; border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; border: none; font-size: 1.5rem; opacity: 0; transition: opacity 0.3s ease, transform 0.3s ease; z-index: 99; box-shadow: 0 4px 12px rgba(27,94,32,0.3); }
#back-to-top.show { opacity: 1; }
#back-to-top:hover { transform: scale(1.1); }
.dark-mode { background: #121e14; color: #e0ede2; }
.dark-mode header { background: rgba(26,46,31,0.9); backdrop-filter: blur(12px); border-bottom-color: rgba(45,74,46,0.5); }
.dark-mode .card { background: rgba(30,47,34,0.8); backdrop-filter: blur(8px); border-color: rgba(45,74,46,0.5); }
.dark-mode .card:hover { border-color: #66bb6a; }
.dark-mode .hero { background: linear-gradient(135deg, #1a2e1f, #2d4a2e); }
.dark-mode .hero h1 { color: #d0e1d3; }
.dark-mode .hero p { color: #b0d0b0; }
.dark-mode .section-title { color: #d0e1d3; }
.dark-mode .section-title::after { background: linear-gradient(90deg, #66bb6a, #a5d6a7); }
.dark-mode footer { background: #0a1a0e; }
.dark-mode .faq-item:hover { background: rgba(45,74,46,0.3); }
.dark-mode .article-list article { border-bottom-color: rgba(45,74,46,0.5); }
@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .menu-toggle { display: block; }
    nav { display: none; width: 100%; margin-top: 12px; flex-direction: column; align-items: center; background: rgba(255,255,255,0.95); backdrop-filter: blur(12px); border-radius: 12px; padding: 12px 0; }
    .dark-mode nav { background: rgba(26,46,31,0.95); }
    nav.open { display: flex; }
    nav a { margin: 8px 0; }
    .hero h1 { font-size: 1.8rem; }
    .hero p { font-size: 1rem; }
    .section-title { font-size: 1.5rem; }
    #back-to-top { bottom: 20px; right: 20px; width: 40px; height: 40px; font-size: 1.2rem; }
}
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }