*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#fff;--soft:#f5f8f6;--text:#0e2b22;--muted:#4a5b54;--light:#718078;--brand:#0f6046;--brand-light:#137a59;--border:rgba(15,96,70,.14);--brand-border:rgba(15,96,70,.34);--warning-bg:#fff9eb;--warning-border:#ead596}
html{scroll-behavior:smooth}
body{font-family:"Thmanyah Sans",sans-serif;background:var(--bg);color:var(--text);min-height:100vh}
nav{display:flex;justify-content:space-between;align-items:center;padding:1.25rem 2rem;border-bottom:1px solid var(--border);background:rgba(255,255,255,.96);backdrop-filter:blur(12px);position:sticky;top:0;z-index:100}
nav a{text-decoration:none}nav a.back{color:var(--muted);font-size:.92rem}nav a.back:hover{color:var(--brand)}
.hero{padding:4.2rem 1.5rem 3.6rem;text-align:center;background:linear-gradient(180deg,#eef8f3 0%,#f9fbfa 100%);border-bottom:1px solid var(--border)}
.tag{display:inline-flex;padding:.34rem .9rem;border-radius:999px;color:var(--brand);background:rgba(15,96,70,.08);border:1px solid var(--brand-border);font-size:.78rem;font-weight:700;margin-bottom:1.2rem}
.hero h1{max-width:900px;margin:0 auto 1rem;font-size:clamp(2rem,5vw,3.25rem);line-height:1.3;letter-spacing:-.035em}
.hero p{max-width:780px;margin:0 auto 1.15rem;color:var(--muted);font-size:1.05rem;line-height:1.9}.meta{color:var(--light);font-size:.85rem}
.layout{max-width:1120px;margin:0 auto;padding:3rem 1.5rem 5rem;display:grid;grid-template-columns:minmax(0,760px) 270px;gap:3rem;align-items:start}
article{min-width:0}article p{color:var(--muted);font-size:1rem;line-height:2;margin-bottom:1rem}article h2{font-size:clamp(1.45rem,3vw,1.85rem);line-height:1.45;margin:3rem 0 1rem;scroll-margin-top:105px}article h3{font-size:1.15rem;line-height:1.55;margin:1.8rem 0 .7rem}article ul,article ol{padding-right:1.4rem;margin:0 0 1.35rem}article li{color:var(--muted);line-height:1.95;margin-bottom:.42rem}article li::marker{color:var(--brand);font-weight:700}article a{color:var(--brand);font-weight:700;text-underline-offset:3px}article strong{color:var(--text)}
.intro{font-size:1.08rem;border-right:4px solid var(--brand);padding:.35rem 1.15rem .35rem 0;margin-bottom:1.8rem}.summary{background:var(--soft);border:1px solid var(--border);border-radius:16px;padding:1.4rem 1.5rem;margin:1.7rem 0 2.4rem}.summary h2{font-size:1.15rem;margin:0 0 .7rem}.summary ul{margin-bottom:0}
.toc{position:sticky;top:105px;background:var(--soft);border:1px solid var(--border);border-radius:16px;padding:1.25rem}.toc strong{display:block;margin-bottom:.75rem}.toc a{display:block;color:var(--muted);text-decoration:none;font-size:.88rem;line-height:1.55;padding:.42rem 0;border-bottom:1px solid var(--border)}.toc a:last-child{border-bottom:0}.toc a:hover{color:var(--brand)}
.steps{display:grid;gap:.9rem;margin:1.2rem 0 2rem;counter-reset:step}.step{counter-increment:step;display:grid;grid-template-columns:42px 1fr;gap:1rem;padding:1.15rem;background:var(--soft);border:1px solid var(--border);border-radius:14px}.step::before{content:counter(step);width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:var(--brand);color:#fff;font-weight:800}.step h3{margin:0 0 .3rem;font-size:1.02rem}.step p{margin:0;font-size:.94rem}
.table-wrap{overflow-x:auto;margin:1.2rem 0 1.8rem;border:1px solid var(--border);border-radius:14px}table{width:100%;border-collapse:collapse;min-width:620px}th,td{padding:.9rem 1rem;text-align:right;vertical-align:top;border-bottom:1px solid var(--border);line-height:1.7}th{background:rgba(15,96,70,.09);color:var(--brand);font-size:.9rem}td{color:var(--muted);font-size:.92rem}tr:last-child td{border-bottom:0}
.notice{margin:1.4rem 0;padding:1.2rem 1.3rem;background:var(--warning-bg);border:1px solid var(--warning-border);border-radius:14px;color:#5d4a16;line-height:1.85}.notice strong{color:#493809}.source-note{background:#f6f9f7;border-right:3px solid var(--brand);padding:1rem 1.1rem;margin:1.2rem 0;color:var(--muted);line-height:1.8;font-size:.92rem}
.faq{display:grid;gap:.8rem;margin-top:1rem}.faq-item{padding:1.2rem 1.3rem;background:var(--soft);border:1px solid var(--border);border-radius:14px}.faq-item h3{margin:0 0 .45rem;font-size:1rem}.faq-item p{margin:0;font-size:.93rem}.sources{padding:1.3rem 1.5rem;border:1px solid var(--border);border-radius:14px}.sources li{font-size:.92rem}.related a{display:block;padding:.85rem 0;border-bottom:1px solid var(--border)}
.cta{margin-top:3rem;padding:2.3rem;text-align:center;border-radius:20px;background:linear-gradient(135deg,var(--brand-light),var(--brand));color:#fff}.cta h2{margin:0 0 .55rem;color:#fff}.cta p{color:rgba(255,255,255,.88);max-width:580px;margin:0 auto 1.3rem}.cta a{display:inline-flex;background:#fff;color:var(--brand);padding:.78rem 1.8rem;border-radius:11px;text-decoration:none}footer{text-align:center;padding:2rem;border-top:1px solid var(--border);color:var(--light);font-size:.85rem}
@media(max-width:900px){.layout{grid-template-columns:1fr}.toc{position:static;order:-1}}@media(max-width:600px){nav{padding:1rem 1.2rem}.hero{padding:3rem 1.2rem 2.5rem}.layout{padding:2rem 1.15rem 3.5rem}.cta{padding:1.8rem 1.2rem}}