:root{
  --green:#0f9d58; --green-dark:#0b7a43; --green-light:#e6f6ee;
  --ink:#1c2b24; --muted:#5c6b63; --line:#e2e9e4; --bg:#f7faf8; --white:#fff;
  --amber:#f6a821; --amber-light:#fef3dd;
  --radius:14px; --shadow:0 2px 12px rgba(12,60,40,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;font-size:16px}
.container{max-width:1060px;margin:0 auto;padding:0 18px}
a{color:var(--green-dark);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}

/* header */
.site-header{background:linear-gradient(135deg,#0b7a43,#0f9d58 60%,#14b866);color:#fff;position:sticky;top:0;z-index:50;box-shadow:0 2px 10px rgba(0,0,0,.15)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:8px;color:#fff;font-weight:800;font-size:20px}
.brand:hover{text-decoration:none}
.brand-logo{font-size:26px}
.brand-text small{font-weight:600;opacity:.85;font-size:13px}
.main-nav{display:none;position:absolute;top:60px;left:0;right:0;background:#0b7a43;flex-direction:column;padding:8px 0;box-shadow:0 8px 16px rgba(0,0,0,.15)}
.main-nav.open{display:flex}
.main-nav a{color:#fff;padding:12px 22px;font-weight:600;border-bottom:1px solid rgba(255,255,255,.12)}
.main-nav a:last-child{border-bottom:none}
.nav-toggle{background:none;border:none;color:#fff;font-size:26px;cursor:pointer;padding:6px 10px}
@media(min-width:820px){
  .main-nav{display:flex;position:static;flex-direction:row;background:none;box-shadow:none;padding:0;gap:4px}
  .main-nav a{padding:8px 14px;border:none;border-radius:8px}
  .main-nav a:hover{background:rgba(255,255,255,.15);text-decoration:none}
  .nav-toggle{display:none}
}

/* hero */
.hero{background:linear-gradient(160deg,#0b7a43 0%,#0f9d58 55%,#14b866 100%);color:#fff;padding:52px 0 58px;text-align:center}
.hero h1{font-size:clamp(28px,5vw,46px);line-height:1.15;font-weight:800;margin-bottom:14px}
.hero p{font-size:clamp(16px,2.6vw,20px);max-width:640px;margin:0 auto 8px;opacity:.95}
.hero .badge{display:inline-block;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:6px 16px;font-size:13px;font-weight:700;letter-spacing:.3px;margin-bottom:18px}
.hero .hero-stats{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-top:24px}
.hero .stat{background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.22);border-radius:12px;padding:12px 20px;min-width:120px}
.hero .stat b{display:block;font-size:22px;font-weight:800}
.hero .stat span{font-size:12.5px;opacity:.9}

/* sections & cards */
.section{padding:44px 0}
.section h2{font-size:clamp(22px,3.4vw,30px);margin-bottom:8px}
.section .lead{color:var(--muted);margin-bottom:26px;max-width:720px}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.card-body{padding:18px}
.card h3{font-size:18px;margin-bottom:6px}
.card .muted{color:var(--muted);font-size:14px}
.grid{display:grid;gap:18px}
.grid-3{grid-template-columns:1fr}
.grid-2{grid-template-columns:1fr}
@media(min-width:760px){.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}}

/* buttons */
.btn{display:inline-block;background:var(--green);color:#fff;font-weight:700;padding:11px 22px;border-radius:10px;border:none;cursor:pointer;text-align:center}
.btn:hover{background:var(--green-dark);text-decoration:none;color:#fff}
.btn-amber{background:var(--amber);color:#4a3200}
.btn-amber:hover{background:#e6970f;color:#4a3200}
.btn-lg{padding:14px 30px;font-size:17px}
.btn-block{display:block;width:100%}

/* article/prose */
.prose{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow)}
.prose h2{font-size:24px;margin:30px 0 10px}
.prose h3{font-size:19px;margin:22px 0 8px}
.prose p{margin:0 0 14px}
.prose ul,.prose ol{margin:0 0 16px 22px}
.prose li{margin-bottom:6px}
.prose blockquote{border-left:4px solid var(--green);background:var(--green-light);padding:12px 16px;border-radius:0 10px 10px 0;margin:0 0 16px;color:#24402f}
.callout{background:var(--amber-light);border:1px solid #f3d9a4;border-radius:12px;padding:14px 18px;margin:18px 0}
.callout b{color:#8a5a00}
.tip{background:var(--green-light);border:1px solid #b9e5cd;border-radius:12px;padding:14px 18px;margin:18px 0}

/* compare table */
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;min-width:640px;font-size:14.5px}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--green-light);color:#14532d;font-weight:700;white-space:nowrap}
tr:last-child td{border-bottom:none}
td .price{font-weight:800;color:var(--green-dark);white-space:nowrap}
.rating{color:var(--amber);font-weight:700}

/* product card */
.product-card{display:flex;flex-direction:column}
.product-card .card-body{flex:1;display:flex;flex-direction:column}
.product-card .price-row{display:flex;align-items:center;gap:10px;margin:10px 0}
.product-card .price{font-size:20px;font-weight:800;color:var(--green-dark)}
.product-card .btn{margin-top:auto}
.tag{display:inline-block;background:var(--amber-light);color:#8a5a00;font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;margin-bottom:8px}

/* faq */
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin-bottom:12px;box-shadow:var(--shadow)}
.faq-item h3{font-size:17px;margin-bottom:6px}

/* footer */
.site-footer{background:#123524;color:#cfe8da;margin-top:20px;padding:40px 0 24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:26px;padding-bottom:24px;border-bottom:1px solid rgba(255,255,255,.12);margin-bottom:18px}
@media(min-width:760px){.footer-grid{grid-template-columns:2fr 1fr 1fr}}
.site-footer a{color:#9fd8bb;display:block;margin-bottom:6px}
.site-footer strong{color:#fff;display:block;margin-bottom:8px}
.footer-bottom{color:#8fb8a4;font-size:13px}
.footer-bottom p{margin-bottom:6px}

/* misc */
.muted{color:var(--muted)}
.mt-2{margin-top:18px}.mt-3{margin-top:26px}
.center{text-align:center}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:14px}
.breadcrumb a{color:var(--green-dark)}
.page-head{padding:34px 0 8px}
.page-head h1{font-size:clamp(24px,4vw,36px)}
.page-head p{color:var(--muted);margin-top:6px;max-width:700px}
.notice{background:var(--amber-light);border:1px solid #f3d9a4;color:#7a5200;border-radius:10px;padding:10px 16px;font-size:14px;margin-bottom:18px}

/* savings calculator */
.calc-wrap{display:grid;grid-template-columns:1fr;gap:22px}
@media(min-width:900px){.calc-wrap{grid-template-columns:1fr 1fr;align-items:start}}
.calc-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;display:grid;gap:16px}
.calc-field label{display:block;font-weight:700;font-size:14.5px;margin-bottom:6px}
.calc-field select,.calc-field input{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:10px;font-size:16px;background:#fff;color:var(--ink);font-family:inherit}
.calc-field select:focus,.calc-field input:focus{outline:2px solid var(--green);outline-offset:1px;border-color:var(--green)}
.field-hint{font-size:12.5px;color:var(--muted);margin-top:5px}
.calc-results{background:linear-gradient(160deg,#0b7a43,#0f9d58 60%,#14b866);color:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}
.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.result-card{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);border-radius:12px;padding:14px}
.result-card.highlight{background:rgba(255,255,255,.2);border-color:rgba(255,255,255,.4)}
.result-label{display:block;font-size:12.5px;opacity:.92;margin-bottom:4px}
.result-value{display:block;font-size:26px;font-weight:800;line-height:1.1}
.result-sub{font-size:12px;opacity:.85}
.calc-note{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:10px;padding:10px 14px;font-size:13.5px;margin-top:14px}

/* top 5 ranking cards */
.top-list{display:grid;gap:20px}
.top-card{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
.top-rank{flex:0 0 46px}
.top-badge{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:var(--green-light);color:var(--green-dark);font-weight:800;font-size:18px}
.top-badge.gold{background:linear-gradient(135deg,#f6c453,#e6970f);color:#fff}
.top-body{flex:1;min-width:0}
.top-head{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:flex-start}
.top-head h2{font-size:20px;margin:2px 0 4px}
.top-price{text-align:right;min-width:170px}
.top-price .price{font-size:20px;font-weight:800;color:var(--green-dark);display:block}
.top-price small{display:block;margin:2px 0 6px}
.top-price .btn{margin-top:8px}
.top-specs{list-style:none;margin:12px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px 18px;font-size:13.5px}
.top-specs li{color:var(--muted)}
.top-specs b{color:var(--ink)}
.top-pc{display:grid;grid-template-columns:1fr;gap:14px;margin-top:14px}
@media(min-width:640px){.top-pc{grid-template-columns:1fr 1fr}}
.pros,.cons{background:var(--green-light);border:1px solid #b9e5cd;border-radius:10px;padding:12px 16px;font-size:14px}
.cons{background:#fdf3f1;border-color:#f0cfc8}
.pros b,.cons b{display:block;margin-bottom:4px}
.pros ul,.cons ul{margin:0;padding-left:18px}
.pros li,.cons li{margin-bottom:3px}
.verdict{background:var(--amber-light);border:1px solid #f3d9a4;border-radius:10px;padding:12px 16px;margin-top:14px;font-size:14.5px}

/* calc CTA banner */
.calc-cta{display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;background:#fff;border:1px solid var(--line);border-left:5px solid var(--amber);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 22px}
.calc-cta h3{font-size:19px}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.7)}
.btn-outline:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;text-decoration:none}