:root{--ink:#1f2933;--muted:#5b6770;--line:#e3e8ec;--bg:#fbfbfa;--card:#fff;--brand:#0f766e;--brand-soft:#e6f4f2;--accent:#f59e0b;--accent-soft:#fff4dd;--max:1080px;--r:14px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 -apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Pretendard","Malgun Gothic","Noto Sans KR",system-ui,sans-serif;word-break:keep-all;overflow-wrap:anywhere}
a{color:var(--brand)}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 16px}
main.wrap{padding-top:8px;padding-bottom:48px}

/* header */
.site-head{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:58px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:1.15rem;color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.brand-mark{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--brand),#14b8a6);position:relative}
.brand-mark:after{content:"";position:absolute;left:7px;top:6px;width:12px;height:14px;border:2.5px solid #fff;border-top:0;border-radius:0 0 6px 6px}
.site-head nav ul{list-style:none;margin:0;padding:0;display:flex;gap:2px;overflow-x:auto;scrollbar-width:none;max-width:100%}
.site-head nav ul::-webkit-scrollbar{display:none}
.site-head nav a{display:block;padding:8px 10px;font-size:.92rem;font-weight:600;color:var(--muted);text-decoration:none;white-space:nowrap;border-radius:8px}
.site-head nav a:hover{background:var(--brand-soft);color:var(--brand)}
@media (max-width:640px){.site-head .wrap{padding-bottom:6px}.site-head nav{width:100%;margin-left:-4px}}

/* home hero */
.hero-home{display:grid;grid-template-columns:1.1fr 1fr;gap:28px;align-items:center;padding:28px 0 8px}
.hero-home h1{font-size:clamp(1.6rem,3.4vw,2.3rem);line-height:1.3;margin:0 0 14px;letter-spacing:-.02em}
.hero-home figure{margin:0;border-radius:var(--r);overflow:hidden;box-shadow:0 10px 30px rgba(15,118,110,.12)}
.lead{font-size:1.08rem;line-height:1.8;color:#2b3640;margin:0 0 18px}
@media (max-width:760px){.hero-home{grid-template-columns:1fr;gap:16px;padding-top:16px}}

/* key box */
.keybox{background:var(--accent-soft);border:1px solid #fde4b0;border-left:5px solid var(--accent);border-radius:var(--r);padding:16px 20px;margin:22px 0}
.keybox h2{margin:0 0 8px;font-size:1.05rem;color:#8a5a00}
.keybox ul{margin:0;padding-left:20px}
.keybox li{margin:4px 0}

/* groups & cards */
.group{margin:34px 0 8px}
.group h2,.related h2,.all-list h2,.faq-wrap h2{font-size:1.35rem;margin:0 0 6px;letter-spacing:-.01em}
.group-desc{margin:0 0 14px;color:var(--muted)}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;text-decoration:none;color:var(--ink);transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(0,0,0,.08)}
.card figure{margin:0;aspect-ratio:16/9;background:#eef2f4;overflow:hidden}
.card figure img{width:100%;height:100%;object-fit:cover}
.card-kw{font-size:.78rem;font-weight:700;color:var(--brand);padding:12px 14px 0}
.card strong{padding:4px 14px 0;font-size:1rem;line-height:1.45}
.card-lead{padding:6px 14px 14px;font-size:.86rem;color:var(--muted);line-height:1.55;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* article */
.crumb{font-size:.85rem;color:var(--muted);padding:12px 0 0}
.crumb a{color:var(--muted);text-decoration:none}
.post{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px 22px;margin-top:12px}
@media (min-width:760px){.post{padding:36px 44px}}
.kicker{margin:0 0 8px;font-size:.85rem;font-weight:700;color:var(--brand)}
.post h1{font-size:clamp(1.45rem,3vw,2rem);line-height:1.35;margin:0 0 8px;letter-spacing:-.02em}
.meta{margin:0 0 18px;font-size:.85rem;color:var(--muted)}
.hero{margin:18px 0;border-radius:12px;overflow:hidden}
.toc{background:#f3f6f8;border-radius:12px;padding:14px 18px;margin:18px 0}
.toc strong{display:block;margin-bottom:4px}
.toc ol{margin:0;padding-left:20px}
.toc a{text-decoration:none}
.post-body h2{font-size:1.32rem;margin:34px 0 10px;padding-top:6px;letter-spacing:-.01em;scroll-margin-top:72px}
.post-body h3{font-size:1.08rem;margin:22px 0 6px}
.post-body p{margin:0 0 14px}
.post-body ul,.post-body ol{padding-left:22px;margin:0 0 14px}
.post-body li{margin:4px 0}
.post-body li.chk{list-style:none;position:relative;padding-left:26px}
.post-body li.chk:before{content:"";position:absolute;left:2px;top:.45em;width:14px;height:14px;border:2px solid var(--brand);border-radius:4px}
.post-body blockquote{margin:16px 0;padding:12px 16px;background:var(--brand-soft);border-left:4px solid var(--brand);border-radius:8px;color:#134e4a}
.post-body blockquote p{margin:0}
.tbl{overflow-x:auto;margin:14px 0 18px;-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;min-width:480px;font-size:.93rem;background:#fff}
th,td{border:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}
th{background:#f3f6f8;font-weight:700;white-space:nowrap}
caption{caption-side:top;text-align:left;font-weight:700;padding:6px 2px}
.post-body strong{color:#111}
.post-body a{text-underline-offset:2px}

/* faq */
.faq-wrap{margin:28px 0 8px}
.faq{border:1px solid var(--line);border-radius:10px;background:#fff;margin:8px 0;padding:0 16px}
.faq summary{cursor:pointer;font-weight:700;padding:12px 0;list-style:none;position:relative;padding-right:28px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";position:absolute;right:2px;top:10px;font-size:1.2rem;color:var(--brand)}
.faq[open] summary:after{content:"−"}
.faq-a{padding:0 0 14px;color:#2b3640}
.faq-a p{margin:0}

/* related / list */
.related{margin:30px 0 0}
.all-list ul{list-style:none;padding:0;margin:0;columns:2;column-gap:28px}
.all-list li{break-inside:avoid;padding:6px 0;border-bottom:1px dashed var(--line);font-size:.95rem}
.all-list .d{color:var(--muted);font-size:.8rem;margin-left:6px}
@media (max-width:640px){.all-list ul{columns:1}}
.home-body{margin-top:30px}
.home-body h2{font-size:1.35rem;margin:30px 0 10px}

/* footer */
.site-foot{border-top:1px solid var(--line);background:#fff;padding:26px 0 40px;font-size:.86rem;color:var(--muted)}
.foot-brand{font-weight:800;color:var(--ink);font-size:1rem;margin:0 0 6px}
.site-foot p{margin:4px 0}