:root{
  --brand:#0b3326; --brand-2:#12543f; --brand-3:#1b7a5c;
  --sun:#f59e0b; --sun-2:#fbbf24; --sun-soft:#fff6e0;
  --ink:#0f1a16; --muted:#586b63; --muted-d:#a7bdb4;
  --paper:#f6f8f5; --line:#e3e9e5; --wa:#25D366;
  --r:18px; --shadow:0 18px 50px rgba(11,51,38,.12); --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:"Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.7;font-size:18px}
img,svg{display:block;max-width:100%}
a{color:var(--brand-3)}
:focus-visible{outline:3px solid var(--sun);outline-offset:3px;border-radius:6px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:10px;z-index:99}.skip:focus{left:10px}
h1,h2,h3{line-height:1.2;letter-spacing:-.02em}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;font-weight:800;font-size:1rem;line-height:1.2;text-decoration:none;text-align:center;border:0;border-radius:12px;padding:14px 20px;cursor:pointer;transition:transform .15s}
.btn:hover{transform:translateY(-2px)}
.btn svg{width:20px;height:20px;flex:none}
.btn-sun{background:linear-gradient(135deg,var(--sun-2),var(--sun));color:#1d1300;box-shadow:0 10px 26px rgba(245,158,11,.3)}
.btn-wa{background:var(--wa);color:#05301a}
.btn-dark{background:var(--brand);color:#fff}

/* header */
header.top{position:sticky;top:0;z-index:50;background:rgba(11,51,38,.94);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:800;font-size:1.1rem}
.logo svg{width:32px;height:32px}
.nav{display:flex;align-items:center;gap:20px}
.nav a{color:#d6e6df;text-decoration:none;font-weight:600;font-size:.92rem}
.nav a:hover{color:#fff}
.nav .btn{padding:10px 16px;font-size:.9rem;color:#1d1300}
@media (max-width:760px){.nav a.hide-sm{display:none}}
.progress{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--sun),var(--sun-2));z-index:60}

/* article hero */
.a-hero{background:radial-gradient(800px 380px at 90% -10%,rgba(251,191,36,.3),transparent 60%),linear-gradient(180deg,var(--brand),#0a2c21);color:#fff;padding:36px 0 56px}
.crumbs{font-size:.84rem;color:var(--muted-d);margin-bottom:22px}
.crumbs a{color:#d6e6df;text-decoration:none}
.crumbs a:hover{text-decoration:underline}
.a-cat{display:inline-block;font-size:.76rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--sun-2);background:rgba(251,191,36,.12);border:1px solid rgba(251,191,36,.3);padding:5px 11px;border-radius:999px;margin-bottom:16px}
.a-hero h1{font-size:clamp(1.9rem,4.4vw,3rem);max-width:22em;margin:0 0 16px}
.a-meta{display:flex;flex-wrap:wrap;gap:6px 18px;color:var(--muted-d);font-size:.9rem}

/* layout */
.a-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:56px;padding-top:44px;padding-bottom:40px}
@media (max-width:980px){.a-grid{grid-template-columns:1fr;gap:0}.aside{display:none}}
.quick{background:var(--sun-soft);border:1px solid #f4e2b3;border-left:5px solid var(--sun);border-radius:14px;padding:20px 22px;margin:0 0 30px}
.quick b{display:block;font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;color:#8a5a00;margin-bottom:6px}
.quick p{margin:0}
.toc{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:18px 22px;margin:0 0 34px}
.toc b{display:block;margin-bottom:6px}
.toc ol{margin:0;padding-left:20px;font-size:.95rem;line-height:1.9}
.toc a{text-decoration:none}
.toc a:hover{text-decoration:underline}

.prose{font-size:1.06rem}
.prose h2{font-size:clamp(1.4rem,2.6vw,1.8rem);margin:2em 0 .6em;scroll-margin-top:84px}
.prose h3{font-size:1.2rem;margin:1.6em 0 .5em}
.prose p{margin:0 0 1.15em}
.prose ul,.prose ol{padding-left:1.3em;margin:0 0 1.2em}
.prose li{margin-bottom:.45em}
.prose strong{color:#0b2a20}
.prose table{width:100%;border-collapse:collapse;margin:1.2em 0 1.6em;font-size:.95rem}
.prose .tbl{overflow-x:auto;-webkit-overflow-scrolling:touch}
.prose th,.prose td{border:1px solid var(--line);padding:11px 13px;text-align:left;vertical-align:top}
.prose thead th{background:var(--brand);color:#fff;border-color:var(--brand)}
.prose tbody tr:nth-child(even){background:var(--paper)}
.prose blockquote{margin:1.4em 0;padding:16px 20px;border-left:4px solid var(--brand-3);background:#eef8f3;border-radius:0 12px 12px 0}
.prose .note{font-size:.92rem;color:var(--muted);background:var(--paper);border-radius:10px;padding:12px 14px}

/* in-article CTAs */
.cta{margin:2.2em 0;border-radius:18px;padding:26px 26px;display:grid;grid-template-columns:1fr auto;gap:18px;align-items:center;background:linear-gradient(135deg,var(--brand),#12543f);color:#fff;position:relative;overflow:hidden}
.cta::after{content:"";position:absolute;width:220px;height:220px;right:-80px;top:-90px;border-radius:50%;background:radial-gradient(circle,rgba(251,191,36,.45),transparent 65%)}
.cta h3{margin:0 0 4px;font-size:1.2rem;color:#fff}
.cta p{margin:0;color:#c3d8ce;font-size:.96rem}
.cta .btn{position:relative;z-index:1;white-space:nowrap}
.cta.light{background:var(--sun-soft);color:var(--ink);border:1px solid #f4e2b3}
.cta.light::after{display:none}
.cta.light h3{color:var(--ink)}
.cta.light p{color:var(--muted)}
.cta.wa{background:#e9fbf0;color:var(--ink);border:1px solid #bfeccf}
.cta.wa::after{display:none}
.cta.wa h3{color:var(--ink)}
.cta.wa p{color:var(--muted)}
@media (max-width:620px){.cta{grid-template-columns:1fr;padding:22px 20px}.cta .btn{width:100%}}

/* faq */
.faq{margin-top:2.4em}
.faq h2{font-size:1.6rem}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;font-weight:700;padding:18px 36px 18px 0;position:relative;font-size:1.02rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);font-size:1.5rem;color:var(--brand-3);font-weight:400}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:0;padding:0 0 18px;color:var(--muted);font-size:1rem}

/* end CTA */
.endcta{margin:3em 0 0;border-radius:24px;padding:40px 34px;text-align:center;color:#fff;background:radial-gradient(600px 300px at 100% 0,rgba(251,191,36,.35),transparent 60%),linear-gradient(160deg,var(--brand),#06231a)}
.endcta h2{margin:0 0 10px;font-size:clamp(1.5rem,3vw,2rem)}
.endcta p{color:#c3d8ce;max-width:34em;margin:0 auto 22px}
.endcta .row{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
@media (max-width:520px){.endcta{padding:30px 20px}.endcta .btn{width:100%}}

/* sidebar */
.aside .stick{position:sticky;top:88px;display:flex;flex-direction:column;gap:18px}
.side-card{background:var(--brand);color:#fff;border-radius:18px;padding:24px;position:relative;overflow:hidden}
.side-card::after{content:"";position:absolute;width:200px;height:200px;right:-80px;bottom:-90px;border-radius:50%;background:radial-gradient(circle,rgba(251,191,36,.4),transparent 65%)}
.side-card h3{margin:0 0 8px;font-size:1.2rem}
.side-card p{color:#c3d8ce;font-size:.92rem;margin:0 0 16px}
.side-card ul{list-style:none;padding:0;margin:0 0 18px;font-size:.88rem;color:#d6e6df}
.side-card li{padding:3px 0 3px 24px;position:relative}
.side-card li::before{content:"✓";position:absolute;left:0;color:var(--sun-2);font-weight:900}
.side-card .btn{width:100%;position:relative;z-index:1;margin-bottom:10px}
.side-toc{border:1px solid var(--line);border-radius:16px;padding:18px 20px;font-size:.9rem}
.side-toc b{display:block;margin-bottom:8px}
.side-toc a{display:block;color:var(--muted);text-decoration:none;padding:4px 0 4px 12px;border-left:2px solid var(--line);line-height:1.4}
.side-toc a:hover,.side-toc a.on{color:var(--brand);border-left-color:var(--sun)}

/* related + listing */
.related{background:var(--paper);padding:60px 0 80px}
.related h2{font-size:1.6rem;margin:0 0 24px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media (max-width:900px){.cards{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.cards{grid-template-columns:1fr}}
.post{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;text-decoration:none;color:var(--ink);display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
.post:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.post .th{height:140px;display:grid;place-items:center;font-size:3rem;position:relative;background:linear-gradient(135deg,hsl(var(--h) 55% 30%),hsl(calc(var(--h) + 40) 65% 45%))}
.post .th::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 10%,rgba(251,191,36,.45),transparent 50%),repeating-linear-gradient(115deg,rgba(255,255,255,.06) 0 2px,transparent 2px 22px)}
.post .th span{position:relative;z-index:1}
.post .bd{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.post .cat{font-size:.74rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--brand-3)}
.post h3{font-size:1.08rem;margin:6px 0 8px;line-height:1.3}
.post p{font-size:.92rem;color:var(--muted);margin:0 0 14px;line-height:1.55}
.post .mt{margin-top:auto;font-size:.82rem;color:var(--muted);display:flex;justify-content:space-between}
.post .mt b{color:var(--brand-3)}
.list-hero{padding:48px 0 64px}
.list-hero h1{margin:0 0 12px;font-size:clamp(2rem,4.6vw,3.1rem)}
.list-hero p{color:#c3d8ce;max-width:38em;font-size:1.1rem;margin:0}
.listing{padding:56px 0 80px;background:var(--paper)}
.post.feature{grid-column:1/-1;flex-direction:row}
.post.feature .th{height:auto;min-height:220px;flex:0 0 42%;font-size:4.5rem}
.post.feature h3{font-size:1.5rem}
@media (max-width:700px){.post.feature{flex-direction:column}.post.feature .th{min-height:160px}}

footer{background:#041a13;color:var(--muted-d);font-size:.9rem;padding:40px 0 110px}
footer .wrap{display:flex;flex-wrap:wrap;gap:16px 32px;justify-content:space-between;align-items:center}
footer a{color:#d6e6df;text-decoration:none}
footer nav{display:flex;flex-wrap:wrap;gap:18px}
@media (min-width:861px){footer{padding-bottom:40px}}

.float-wa{position:fixed;right:18px;bottom:18px;z-index:60;width:58px;height:58px;border-radius:50%;background:var(--wa);display:grid;place-items:center;box-shadow:0 10px 30px rgba(37,211,102,.45);color:#fff}
.float-wa svg{width:30px;height:30px}
.mbar{display:none}
@media (max-width:860px){
  .float-wa{display:none}
  .mbar{display:grid;grid-template-columns:1fr 1fr;gap:8px;position:fixed;left:0;right:0;bottom:0;z-index:60;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:rgba(255,255,255,.96);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-top:1px solid var(--line)}
  .mbar .btn{padding:13px 10px;font-size:.92rem;border-radius:11px}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}}

/* featured image + photo thumbnails */
.feat{margin:0 0 28px;border-radius:18px;overflow:hidden;background:var(--paper);border:1px solid var(--line)}
.feat img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}
.feat figcaption{padding:10px 16px 12px;font-size:.84rem;color:var(--muted);line-height:1.5}
.feat .credit{display:block;font-size:.76rem;color:#7d8f87;margin-top:2px}
.feat .credit a{color:inherit}
.post .th.photo{background:#dfe7e2}
.post .th.photo::after{background:linear-gradient(180deg,transparent 55%,rgba(6,35,26,.35))}
.post .th img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.post:hover .th img{transform:scale(1.05)}
@media (max-width:980px){.a-grid .feat{margin-top:0}}

/* about-the-author box (E-E-A-T) */
.about{display:flex;gap:16px;align-items:flex-start;margin-top:2.4em;padding:20px 22px;border:1px solid var(--line);border-radius:16px;background:var(--paper)}
.about svg{width:44px;height:44px;flex:none}
.about b{display:block;margin-bottom:4px}
.about p{margin:0;font-size:.95rem;color:var(--muted)}