:root{color-scheme:light;--paper:#f6f4ef;--card:#fffefa;--ink:#18272c;--muted:#526267;--line:#d8dedb;--accent:#176b68;--accent-light:#dcefeb;--focus:#a13f22;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html:lang(ko){word-break:keep-all;overflow-wrap:anywhere}
body{margin:0;background:var(--paper);color:var(--ink);line-height:1.65}
a{color:var(--accent);text-underline-offset:.2em}
a:hover{color:#104f4c}
a:focus-visible{outline:3px solid var(--focus);outline-offset:4px;border-radius:2px}
.skip{position:absolute;left:1rem;top:-5rem;background:var(--card);padding:.5rem 1rem;z-index:3}
.skip:focus{top:1rem}
.wrap{width:min(100% - 2.5rem,72rem);margin-inline:auto}
.masthead{border-bottom:1px solid var(--line);background:var(--card)}
.masthead .wrap{display:flex;justify-content:space-between;align-items:center;gap:.75rem 1.5rem;flex-wrap:wrap;min-height:4.5rem;padding-block:.75rem}
.brand{font-size:1.28rem;font-weight:800;letter-spacing:-.045em;color:var(--ink);text-decoration:none}
.brand-mark{display:inline-block;width:.7rem;height:.7rem;margin-right:.55rem;border-radius:50%;background:var(--accent)}
.nav{display:flex;gap:.35rem;flex-wrap:wrap}
.nav a{padding:.45rem .7rem;color:var(--ink);font-size:.91rem;font-weight:650;text-decoration:none;border-radius:.5rem}
.nav a:hover,.nav a[aria-current=page]{background:var(--accent-light);color:#104f4c}
.language-picker{position:relative;font-size:.88rem;margin-left:auto}
.language-picker summary{cursor:pointer;min-height:2.75rem;display:list-item;align-content:center;padding:.5rem .7rem;border:1px solid var(--line);border-radius:.5rem;overflow-wrap:anywhere}
.language-picker summary:focus-visible{outline:3px solid var(--focus);outline-offset:4px}
.language-picker nav{position:absolute;right:0;top:calc(100% + .35rem);z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:.15rem;min-width:18rem;padding:.6rem;background:var(--card);border:1px solid var(--line);border-radius:.65rem;box-shadow:0 .5rem 1.5rem #18272c16}
.language-picker a{display:flex;align-items:center;min-height:2.75rem;padding:.4rem .65rem;text-decoration:none;border-radius:.35rem;overflow-wrap:anywhere}
.language-picker a:hover,.language-picker a[aria-current=page]{background:var(--accent-light)}
.hero{padding:clamp(3rem,9vw,7rem) 0 3.5rem;border-bottom:1px solid var(--line)}
.eyebrow{font-size:.75rem;font-weight:750;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(2.45rem,6vw,5.25rem);line-height:1.08;letter-spacing:-.055em;max-width:18ch;margin-bottom:1.25rem}
.lede{font-size:clamp(1.12rem,2vw,1.45rem);line-height:1.5;max-width:44rem;color:var(--muted)}
.hero-actions,.lang-links{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:1.8rem}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:2.9rem;padding:.65rem 1.05rem;border:1px solid var(--accent);border-radius:.6rem;background:var(--accent);color:#fff;text-decoration:none;font-weight:700}
.button:hover{background:#104f4c;color:#fff}
.button.secondary{background:transparent;color:var(--accent)}
.button.secondary:hover{background:var(--accent-light)}
.section{padding:3rem 0;border-bottom:1px solid var(--line)}
.section h2{font-size:clamp(1.65rem,3vw,2.35rem);line-height:1.2;letter-spacing:-.035em;margin-bottom:1.15rem}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:1rem;padding:1.5rem}
.card h3{font-size:1.17rem;line-height:1.3;margin-bottom:.55rem}
.card p:last-child,.prose p:last-child{margin-bottom:0}
.card p{color:var(--muted)}
.page{width:min(100% - 2.5rem,49rem);margin:0 auto;padding:3.5rem 0 5rem}
.page h1{font-size:clamp(2.5rem,5vw,4rem)}
.page .lede{font-size:1.12rem}
.meta{font-size:.88rem;color:var(--muted)}
.language{padding-top:2.4rem;margin-top:2.4rem;border-top:1px solid var(--line)}
.language:first-of-type{margin-top:0;border-top:0}
.language h2{font-size:1.8rem;letter-spacing:-.035em;margin-bottom:1.5rem}
.prose section{margin:0 0 2rem}
.prose h2,.prose h3{font-size:1.18rem;margin:0 0 .55rem}
.prose p,.prose li{color:#314247}
.prose ul,.prose ol{padding-left:1.5rem}
.notice{background:var(--accent-light);border-left:4px solid var(--accent);padding:1rem 1.25rem;border-radius:0 .5rem .5rem 0;margin:1.7rem 0}
.notice p{margin:0;color:var(--ink)}
.product-visual{margin-block:0 2rem}
.product-visual img{display:block;width:100%;height:auto;border-radius:1.25rem}
.footer{padding:2rem 0 2.5rem;color:var(--muted);font-size:.88rem}
.footer .wrap{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.footer nav{display:flex;gap:1.1rem;flex-wrap:wrap}
@media(max-width:700px){.masthead .wrap{align-items:flex-start;flex-direction:column;padding-block:1rem;gap:.55rem}.nav{margin-left:-.7rem}.language-picker{margin-left:0;width:100%}.language-picker nav{position:static;min-width:0;margin-top:.35rem}.grid{grid-template-columns:1fr}.hero{padding-top:3.5rem}.page{padding-top:2.5rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}