[hidden]{display:none!important}
:root{color-scheme:light;--bg:#f6f5f0;--surface:#fffefa;--fg:#192e32;--muted:#526564;--accent:#176b60;--soft:#e8efdf;--line:#d5ded5;--shadow:0 10px 30px #192e3209}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--bg:#101c22;--surface:#182930;--fg:#edf2e9;--muted:#b1c2be;--accent:#a4d4bb;--soft:#263c36;--line:#35494b;--shadow:none}}
:root[data-theme=dark]{color-scheme:dark;--bg:#101c22;--surface:#182930;--fg:#edf2e9;--muted:#b1c2be;--accent:#a4d4bb;--soft:#263c36;--line:#35494b;--shadow:none}
*{box-sizing:border-box}html{scroll-padding-bottom:100px}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;padding:0 20px calc(90px + env(safe-area-inset-bottom));overflow-wrap:anywhere}a{color:var(--accent);text-underline-offset:4px}button{font:inherit;cursor:pointer}a,button{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--accent);outline-offset:4px;border-radius:5px}h1,h2,h3,.brand{font-family:"Avenir Next","Apple SD Gothic Neo","Malgun Gothic",sans-serif;letter-spacing:-.045em;line-height:1.35}h1{font-size:clamp(1.75rem,4vw,2.6rem);margin:0 0 12px;max-width:760px}h2{font-size:1.25rem;margin:0 0 16px}h3{font-size:1.12rem;margin:12px 0 8px}p{margin:0 0 16px}.symbols{position:absolute;width:0;height:0;overflow:hidden}.ic{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}.skip{position:fixed;top:-100px;left:20px;z-index:10;background:var(--surface);padding:12px}.skip:focus{top:8px}.topbar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:16px;max-width:1160px;margin:auto}.brand{display:inline-flex;align-items:center;gap:9px;text-decoration:none;color:var(--fg);font-size:1.4rem;font-weight:750;min-height:44px}.brand-mark{width:29px;height:29px;color:var(--accent)}.theme-toggle{display:grid;place-items:center;width:44px;height:44px;border:1px solid var(--line);border-radius:50%;color:var(--fg);background:var(--surface)}main,.preview-note,footer{max-width:1160px;margin-left:auto;margin-right:auto}main{padding-top:24px;min-height:55vh}.preview-note{font-size:.78rem;color:var(--muted);border-top:1px solid var(--line);padding-top:10px}main>p{color:var(--muted)}section{margin-top:32px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px}.section-heading h2{margin:0}.text-link{display:inline-flex;align-items:center;gap:7px;min-height:44px;font-size:.9rem;text-decoration:none}.cards{display:grid;grid-template-columns:minmax(0,1fr);gap:12px}.card{display:flex;flex-direction:column;min-width:0;padding:22px;border:1px solid var(--line);border-radius:16px;background:var(--surface);color:var(--fg);text-decoration:none;box-shadow:var(--shadow);transition:transform .18s ease;animation:enter .24s ease-out both}.card:nth-child(2){animation-delay:.04s}.card:nth-child(3){animation-delay:.08s}.card:hover{transform:translateY(-2px);border-color:var(--accent)}.card p{color:var(--muted);font-size:.94rem;margin:0}.topic{color:var(--accent);font-size:.8rem;font-weight:650;display:flex;align-items:center;gap:8px}.card-end{align-self:flex-end;margin-top:18px;color:var(--accent)}.services .card{box-shadow:none;background:var(--soft)}.article{max-width:720px;margin:0 auto;font-size:1rem;line-height:1.85}.article h1{font-size:clamp(1.7rem,3.1vw,2.35rem)}.article h2{font-size:1.3rem;margin:32px 0 14px}.article h3{margin-top:22px}.article ul,.article ol{padding-left:24px}.article li{margin:6px 0}.article blockquote{margin:24px 0;padding:12px 20px;border-left:3px solid var(--accent);background:var(--soft);border-radius:0 10px 10px 0}.article blockquote p:last-child{margin:0}.byline{font-size:.82rem;color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:24px}.article section a{font-size:.85rem}.article code{background:var(--soft);border-radius:4px;padding:2px 5px;word-break:break-word}.article pre{overflow:auto;padding:16px;background:var(--soft);border-radius:10px}.table-scroll{max-width:100%;overflow-x:auto;margin:20px 0;border:1px solid var(--line);border-radius:10px}table{border-collapse:collapse;width:100%;font-size:.92rem;min-width:500px;text-align:left}th,td{padding:12px;border-bottom:1px solid var(--line);vertical-align:top}th{background:var(--soft);font-weight:650}.related{border-top:1px solid var(--line);padding-top:24px;max-width:720px;margin:40px auto 0}.related .cards{grid-template-columns:minmax(0,1fr)}footer{border-top:1px solid var(--line);margin-top:44px;padding-top:18px;display:flex;flex-wrap:wrap;align-items:center;gap:4px 20px;color:var(--muted);font-size:.8rem}footer a{min-height:44px;display:inline-flex;align-items:center;color:var(--muted)}footer .copyright{width:100%;margin:0}#tabBar{position:fixed;bottom:0;left:0;right:0;z-index:5;display:flex;justify-content:space-around;gap:4px;background:var(--surface);border-top:1px solid var(--line);padding:7px 12px calc(7px + env(safe-area-inset-bottom))}.nav-link{display:flex;align-items:center;justify-content:center;flex-direction:column;gap:2px;flex:1;min-height:48px;text-decoration:none;color:var(--muted);font-size:.75rem;border-radius:10px}.nav-link[aria-current=page]{background:var(--soft);color:var(--accent);font-weight:700}@keyframes enter{from{opacity:.65;transform:translateY(8px)}to{opacity:1;transform:none}}@media(min-width:768px){body{padding-left:32px;padding-right:32px}.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.related .cards{grid-template-columns:repeat(2,minmax(0,1fr))}main{padding-top:32px}}@media(min-width:1024px){body{padding:0 40px 32px 216px}.topbar{height:90px}#tabBar{right:auto;top:0;bottom:0;width:176px;border-top:0;border-right:1px solid var(--line);flex-direction:column;justify-content:flex-start;padding:110px 16px 24px;gap:8px}.nav-link{flex:0;flex-direction:row;justify-content:flex-start;padding:10px 14px;gap:12px;font-size:.9rem}.cards{grid-template-columns:repeat(3,minmax(0,1fr))}.related .cards{grid-template-columns:repeat(2,minmax(0,1fr))}.services .cards{grid-template-columns:repeat(2,minmax(0,1fr))}footer .copyright{width:auto;margin-right:auto}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}