:root{--green:#16a34a;--green-dark:#12833c;--green-deep:#0b5e2c;--green-soft:#e8f7ee;--green-line:#bfe6cd;--ink:#14231a;--body:#3e5148;--muted:#6b8078;--bg:#f6faf7;--card:#ffffff;--radius:16px;--shadow:0 12px 30px rgba(11,94,44,.08)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--body);font-family:"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;font-size:17px;line-height:1.72;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--green-dark)}
.shell{width:100%;max-width:1120px;margin:0 auto;padding:0 18px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--green-line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;background:linear-gradient(140deg,var(--green),var(--green-deep));color:#fff;box-shadow:0 6px 16px rgba(22,163,74,.32)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:20px;font-weight:800;letter-spacing:-.3px}
.brand-sub{font-size:11px;text-transform:uppercase;letter-spacing:1.4px;color:var(--muted)}
.primary-nav{display:flex;align-items:center;gap:20px}
.primary-nav a{text-decoration:none;color:var(--ink);font-size:15px;font-weight:600;padding:6px 0;border-bottom:2px solid transparent}
.primary-nav a:hover{color:var(--green);border-bottom-color:var(--green)}
.primary-nav .nav-cta{background:linear-gradient(135deg,var(--green),var(--green-deep));color:#fff;padding:9px 20px;border-radius:999px;border:0}
.primary-nav .nav-cta:hover{color:#fff;filter:brightness(1.07);border-bottom-color:transparent}
.nav-toggle{display:none;width:44px;height:40px;border:1px solid var(--green-line);background:#fff;border-radius:10px;cursor:pointer;padding:9px 10px;flex-direction:column;justify-content:space-between}
.nav-toggle span{display:block;height:2px;background:var(--green-deep);border-radius:2px}
.crumbs{background:#fff;border-bottom:1px solid #e7efe9;font-size:13.5px}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:12px 0}
.crumbs li{display:flex;align-items:center;gap:8px;color:var(--muted)}
.crumbs li+li::before{content:"/";color:#b9ccc0}
.crumbs a{color:var(--green-dark);text-decoration:none}
.crumbs a:hover{text-decoration:underline}
.hero{background:radial-gradient(900px 400px at 12% -10%,rgba(22,163,74,.16),transparent 65%),linear-gradient(160deg,#ffffff 0%,#eef8f1 100%);padding:52px 0 58px;border-bottom:1px solid var(--green-line)}
.hero-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:34px;align-items:start}
.hero-badge{display:inline-block;background:var(--green-soft);color:var(--green-deep);border:1px solid var(--green-line);border-radius:999px;padding:6px 15px;font-size:13px;font-weight:700;letter-spacing:.2px}
.hero-heading{margin:18px 0 14px;font-size:39px;line-height:1.16;font-weight:800;color:var(--ink);letter-spacing:-.6px}
.hero-sub{margin:0 0 26px;font-size:17.5px;color:var(--body)}
.btn{display:inline-block;text-decoration:none;font-weight:700;border-radius:999px;padding:15px 30px;transition:transform .15s ease,box-shadow .15s ease,filter .15s ease}
.btn-primary{background:linear-gradient(135deg,var(--green),var(--green-deep));color:#fff;box-shadow:0 12px 26px rgba(22,163,74,.3)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 16px 32px rgba(22,163,74,.36)}
.hero-card{background:var(--card);border:1px solid var(--green-line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}
.hero-card-title{font-size:13px;text-transform:uppercase;letter-spacing:1.5px;color:var(--green-dark);font-weight:800;margin-bottom:12px}
.facts{list-style:none;margin:0;padding:0}
.facts li{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px dashed #d9e9df;font-size:15px}
.facts li:last-child{border-bottom:0}
.facts span{color:var(--muted)}
.facts strong{color:var(--ink);text-align:right}
.toc-wrap{margin-top:30px}
.toc{background:var(--card);border:1px solid var(--green-line);border-left:5px solid var(--green);border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow)}
.toc-title{font-weight:800;color:var(--ink);margin-bottom:10px;font-size:15px;text-transform:uppercase;letter-spacing:1px}
.toc ol{margin:0;padding-left:20px}
.toc li{margin:7px 0}
.toc a{color:var(--green-dark);text-decoration:none}
.toc a:hover{text-decoration:underline}
.page-title{padding:30px 0 4px}
.block{padding:34px 0}
.block.alt{background:#fff;border-top:1px solid #e7efe9;border-bottom:1px solid #e7efe9}
.ico{display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:14px;background:var(--green-soft);color:var(--green-deep);border:1px solid var(--green-line);margin-bottom:12px}
.ico svg{width:24px;height:24px}
.ico.small{width:40px;height:40px;margin-bottom:10px}
.ico.small svg{width:20px;height:20px}
.content{max-width:100%}
.content h1{font-size:34px;line-height:1.22;color:var(--ink);font-weight:800;margin:0 0 6px;letter-spacing:-.5px}
.content h2{font-size:27px;line-height:1.28;color:var(--ink);font-weight:800;margin:6px 0 16px;letter-spacing:-.3px}
.content h3{font-size:20px;line-height:1.35;color:var(--green-deep);font-weight:750;margin:28px 0 10px}
.content h4{font-size:17.5px;color:var(--ink);margin:22px 0 8px}
.content p{margin:0 0 16px}
.content strong{color:var(--ink)}
.content em{color:var(--green-deep)}
.content a{color:var(--green-dark);text-decoration:underline;text-underline-offset:2px;word-break:break-word}
.content a:hover{color:var(--green-deep)}
.content ul,.content ol{margin:0 0 18px;padding-left:22px}
.content li{margin:8px 0}
.content ul{list-style:none;padding-left:0}
.content ul li{position:relative;padding-left:28px}
.content ul li::before{content:"";position:absolute;left:6px;top:11px;width:9px;height:9px;border-radius:3px;background:linear-gradient(135deg,var(--green),var(--green-deep))}
.content ol li::marker{color:var(--green);font-weight:700}
.content table{width:100%;border-collapse:collapse;margin:0 0 20px;font-size:15.5px;min-width:520px}
.content th,.content td{border:1px solid var(--green-line);padding:11px 13px;text-align:left}
.content th{background:var(--green-soft);color:var(--green-deep)}
.table-scroll{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;margin-bottom:20px}
.cta-strip{margin-top:26px;background:linear-gradient(135deg,rgba(22,163,74,.1),rgba(11,94,44,.05));border:1px solid var(--green-line);border-radius:var(--radius);padding:22px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}
.cta-strip span{font-weight:750;color:var(--ink);font-size:18px}
.faq-list{margin-top:6px;display:grid;gap:12px}
.faq-item{background:var(--card);border:1px solid var(--green-line);border-radius:14px;padding:4px 18px;box-shadow:0 6px 16px rgba(11,94,44,.05)}
.faq-item summary{cursor:pointer;list-style:none;padding:15px 34px 15px 0;font-weight:700;color:var(--ink);position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"";position:absolute;right:4px;top:50%;width:10px;height:10px;border-right:2px solid var(--green);border-bottom:2px solid var(--green);transform:translateY(-70%) rotate(45deg);transition:transform .2s ease}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(225deg)}
.faq-answer{padding:0 0 14px}
.faq-answer p{margin:0;color:var(--body)}
.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.info-card,.author-card,.sources-card{background:var(--card);border:1px solid var(--green-line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.info-title{font-size:19px;font-weight:800;color:var(--ink);margin-bottom:10px}
.rich p{margin:0 0 14px}
.rich p:last-child{margin-bottom:0}
.rich a{color:var(--green-dark);word-break:break-word}
.author-sources{display:grid;grid-template-columns:1fr 1.2fr;gap:22px}
.author-name{font-size:21px;font-weight:800;color:var(--green-deep);margin-bottom:6px}
.author-role{margin:0;color:var(--body)}
.sources{list-style:none;margin:0;padding:0}
.sources li{padding:10px 0;border-bottom:1px dashed #d9e9df}
.sources li:last-child{border-bottom:0}
.sources a{color:var(--green-dark);text-decoration:none;word-break:break-word}
.sources a:hover{text-decoration:underline}
.site-footer{background:linear-gradient(160deg,#0d3f22,#08301a);color:#cfe6d8;padding:40px 0 30px;margin-top:10px}
.footer-top{display:flex;align-items:center;justify-content:space-between;gap:14px;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.14)}
.footer-brand{font-size:22px;font-weight:800;color:#fff;letter-spacing:-.3px}
.age{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;border:2px solid #7ddba0;color:#7ddba0;font-weight:800;font-size:14px}
.footer-text{padding:18px 0 6px;font-size:14.5px;line-height:1.7}
.footer-text p{margin:0}
.footer-bottom{font-size:13px;color:#8fb8a0;padding-top:10px}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr}.info-grid,.author-sources{grid-template-columns:1fr}}
@media (max-width:768px){body{font-size:16.5px}.header-inner{min-height:62px}.nav-toggle{display:flex}.primary-nav{position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--green-line);flex-direction:column;align-items:stretch;gap:0;padding:8px 18px 16px;display:none;box-shadow:0 14px 26px rgba(11,94,44,.12)}.primary-nav.open{display:flex}.primary-nav a{padding:12px 0;border-bottom:1px solid #eef4f0}.primary-nav .nav-cta{text-align:center;margin-top:12px;border-bottom:0}.hero{padding:36px 0 40px}.hero-heading{font-size:28px}.hero-sub{font-size:16.5px}.btn{width:100%;text-align:center;padding:14px 18px}.content h1{font-size:26px}.content h2{font-size:22px}.content h3{font-size:18.5px}.content table{font-size:14.5px}.cta-strip{flex-direction:column;align-items:stretch;text-align:center}.cta-strip span{font-size:16.5px}.facts li{flex-direction:column;gap:2px}.facts strong{text-align:left}.info-card,.author-card,.sources-card,.toc{padding:18px}}
@media (max-width:420px){.shell{padding:0 14px}.brand-name{font-size:18px}.hero-heading{font-size:24px}.content h1{font-size:23px}}