:root{--paper:#f4f7f2;--ink:#1d3027;--green:#2f6b45;--pale:#edf6e9;--line:#dbe5dc;--muted:#718077;--accent:#d8f36b}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Pretendard,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:inherit}.shell{max-width:900px;margin:0 auto;padding:28px 24px 80px}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:48px}.brand{font-size:18px;font-weight:800;letter-spacing:-.04em;text-decoration:none}.brand i{display:inline-block;width:21px;height:21px;background:var(--accent);border-radius:7px 7px 7px 2px;vertical-align:-4px;margin-right:7px;transform:rotate(-10deg)}.back{color:#597166;font-size:14px;text-underline-offset:3px}.article{background:#fff;border:1px solid var(--line);border-radius:24px;padding:clamp(28px,6vw,64px)}.eyebrow{color:var(--green);font-size:12px;font-weight:800;letter-spacing:.12em;margin-bottom:18px}.article h1{font-size:clamp(30px,5vw,50px);letter-spacing:-.07em;line-height:1.12;margin:0}.lead{font-size:18px;line-height:1.7;color:#42564c;margin:24px 0 28px;max-width:680px}.meta{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:15px 0;color:var(--muted);font-size:13px;margin-bottom:38px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}.article h2{font-size:24px;letter-spacing:-.05em;margin:38px 0 13px}.article h3{font-size:18px;letter-spacing:-.03em;margin:28px 0 10px}.article p{font-size:16px;line-height:1.85;color:#3e5148;margin:0 0 16px}.formula{background:#22382c;color:#eff9e8;border-radius:15px;padding:17px 20px;margin:22px 0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;line-height:1.7;overflow:auto}.example{border:1px solid var(--line);border-radius:16px;padding:20px;margin:24px 0;background:#fbfdfb}.example h3{margin-top:0;color:var(--green)}.table-wrap{overflow-x:auto;margin:18px 0 22px}table{border-collapse:collapse;width:100%;min-width:540px;font-size:14px;color:#3e5148}th,td{padding:11px 12px;border-bottom:1px solid var(--line);text-align:right;white-space:nowrap}th:first-child,td:first-child{text-align:left}thead th{background:#f0f6ed;color:var(--green);font-weight:800}caption{text-align:left;color:var(--muted);font-size:12px;margin-bottom:8px}.note{background:var(--pale);border-radius:14px;padding:18px 20px;margin:28px 0;color:#365a45;font-size:14px;line-height:1.7}.note b{color:var(--green)}.checklist{padding:0;margin:18px 0;list-style:none}.checklist li{position:relative;padding:10px 0 10px 24px;border-bottom:1px solid #edf1ed;color:#3e5148;font-size:15px;line-height:1.6}.checklist li:before{content:"✓";position:absolute;left:2px;color:var(--green);font-weight:800}.faq,.sources{border-top:1px solid var(--line);margin-top:32px;padding-top:8px}.faq p{margin-bottom:18px}.faq strong{color:var(--ink)}.sources ul{padding-left:20px;margin:10px 0;color:#3e5148;line-height:1.8;font-size:14px}.sources a,.related-guides a{color:var(--green);font-weight:700}.source-note{font-size:13px!important;color:var(--muted)!important;margin-top:16px!important}.related-guides{border-top:1px solid var(--line);margin-top:36px;padding-top:20px}.related-guides strong{display:block;color:var(--ink);font-size:13px;margin-bottom:10px}.related-guides ul{display:flex;flex-wrap:wrap;gap:8px 18px;padding:0;margin:0;list-style:none}.related-guides a{font-size:13px;text-decoration:none}.footer-nav{display:flex;justify-content:space-between;gap:18px;margin-top:28px}.footer-nav a{font-size:14px;color:var(--green);font-weight:700;text-decoration:none}.policy-nav{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:18px;padding-top:18px;border-top:1px solid var(--line)}.policy-nav a{font-size:13px;color:var(--muted);text-decoration:none}.site-footer{margin-top:30px;padding-top:20px;border-top:1px solid var(--line);color:var(--muted);font-size:12px;line-height:1.6}.site-footer a{color:var(--green);font-weight:700;text-decoration:none}@media(max-width:560px){.shell{padding:20px 14px 55px}.topbar{margin-bottom:30px;align-items:flex-start;flex-direction:column;gap:14px}.article{border-radius:18px;padding:26px 20px}.lead{font-size:16px}.article p{font-size:15px}.footer-nav{flex-direction:column}.meta{display:block}.meta span{display:block;margin:3px 0}}
.guide-directory{margin:0 0 30px;border:1px solid var(--line);border-radius:14px;background:#f8fbf7}.guide-directory summary{cursor:pointer;padding:14px 16px;color:var(--green);font-size:13px;font-weight:800}.guide-directory ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 22px;margin:0;padding:0 16px 16px;list-style:none}.guide-directory a{color:#496257;font-size:13px;text-decoration:none}.guide-directory a:hover{color:var(--green)}@media(max-width:560px){.guide-directory ul{grid-template-columns:1fr}}
.note a{color:var(--green);font-weight:800;text-decoration:underline;text-underline-offset:3px}