:root{--bg:#ffffff;--fg:#1a1a1a;--muted:#666;--line:#e5e5e5;--accent:#2b6cff;--soft:#f7f8fa}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Apple SD Gothic Neo,Pretendard,Noto Sans KR,sans-serif;line-height:1.7;-webkit-text-size-adjust:100%}.wrap{max-width:760px;margin:0 auto;padding:0 20px}header{border-bottom:1px solid var(--line);padding:18px 0}header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px}.logo{font-weight:700;font-size:19px;letter-spacing:-.02em;color:var(--fg)}.logo,nav a{text-decoration:none}nav a{color:var(--muted);font-size:14px;margin-left:16px}nav a:hover{color:var(--fg)}main{padding:44px 0 72px}h1{font-size:30px;line-height:1.35;letter-spacing:-.02em;margin:0 0 12px}h2{font-size:19px;margin:36px 0 10px;letter-spacing:-.01em}h3{font-size:16px;margin:22px 0 6px}li,p{font-size:15px;color:#333}.lead{font-size:17px;margin:0 0 28px}.lead,.meta{color:var(--muted)}.meta{font-size:13px;margin-bottom:32px}table{border-collapse:collapse;width:100%;margin:14px 0;font-size:14px;display:block;overflow-x:auto}td,th{border:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}th{font-weight:600;white-space:nowrap}.box,th{background:var(--soft)}.box{border:1px solid var(--line);border-radius:10px;padding:16px 18px;margin:18px 0}.box p:last-child{margin-bottom:0}.steps{border-radius:10px;padding:20px 24px;margin:20px 0}.steps,code{background:var(--soft)}code{padding:2px 6px;border-radius:4px;font-size:13px}a{color:var(--accent)}footer{border-top:1px solid var(--line);padding:26px 0;font-size:13px}footer,footer a{color:var(--muted)}footer a{margin-right:14px}.todo{background:#fff8e1;border:1px solid #ffe08a;border-radius:8px;padding:12px 14px;margin:16px 0;font-size:14px;color:#7a5c00}@media (prefers-color-scheme:dark){:root{--bg:#141416;--fg:#ececed;--muted:#9a9a9f;--line:#2c2c31;--soft:#1c1c20}li,p{color:#d4d4d8}.todo{background:#3a3113;border-color:#6b5a1f;color:#f0d68a}}.narrow{max-width:440px}.form{display:flex;flex-direction:column;gap:8px;margin:20px 0}.form label{font-size:14px;color:var(--muted)}.form input{font:inherit;font-size:15px;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--fg);width:100%}.form input:focus{outline:2px solid var(--accent);outline-offset:-1px;border-color:var(--accent)}.form button{font:inherit;font-size:15px;font-weight:600;padding:10px 14px;margin-top:4px;border:0;border-radius:8px;background:var(--accent);color:#fff;cursor:pointer}.form button:hover{filter:brightness(1.08)}.userbar{display:flex;align-items:center;gap:14px}.who{font-size:14px}.linkish,.who{color:var(--muted)}.linkish{font:inherit;font-size:14px;padding:0;border:0;background:none;cursor:pointer;text-decoration:underline}.linkish:hover{color:var(--fg)}.good{background:#e9f7ef;border:1px solid #a8dfc1;border-radius:8px;padding:12px 14px;margin:16px 0;font-size:14px;color:#1c5c39}.actions{margin:16px 0 0}.btn{display:inline-block;font-size:15px;font-weight:600;padding:10px 16px;border-radius:8px;background:var(--accent);color:#fff;text-decoration:none}.btn:hover{filter:brightness(1.08)}.btn.secondary{background:transparent;color:var(--accent);border:1px solid var(--line);font-weight:500}.acct{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:17px}.badge{font-size:12.5px;font-weight:600;padding:3px 9px;border-radius:999px;line-height:1.5;white-space:nowrap}.badge.ok{background:#e9f7ef;color:#1c5c39;border:1px solid #a8dfc1}.badge.warn{background:#fff8e1;color:#7a5c00;border:1px solid #ffe08a}.badge.info{background:var(--soft);color:var(--muted);border:1px solid var(--line)}@media (prefers-color-scheme:dark){.badge.ok,.good{background:#12331f;border-color:#2c6b45;color:#a9e5c3}.badge.warn{background:#3a3113;color:#f0d68a;border-color:#6b5a1f}}header .wrap{flex-wrap:wrap}.mainnav{margin-right:auto;padding-left:20px}.mainnav a{margin-left:0;margin-right:16px}.chips{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0}.chip{display:inline-block;line-height:1.6;padding:2px 9px;border-radius:999px;background:var(--bg);border:1px solid var(--line);color:var(--fg);white-space:nowrap}.chip,.sub{font-size:12.5px}.sub{display:block;color:var(--muted);margin-top:2px}.sub.warnish{color:#a06a00}.nowrap{white-space:nowrap}.mono{font-feature-settings:"tnum";font-variant-numeric:tabular-nums;letter-spacing:.01em}.dir{font-size:12.5px;font-weight:600;padding:2px 8px;border-radius:6px;white-space:nowrap}.dir.in{background:var(--soft);color:var(--muted);border:1px solid var(--line)}.dir.out{background:#eaf1ff;color:#1b47a8;border:1px solid #b9cdfb}.dir.stop{background:#fff8e1;color:#7a5c00;border:1px solid #ffe08a}.metrics{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:10px;gap:10px;margin:14px 0}.metric{background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:14px 12px;text-align:center}.metric .num{display:block;font-size:26px;font-weight:700;letter-spacing:-.02em;line-height:1.2}.metric .cap{display:block;font-size:12.5px;color:var(--muted);margin-top:2px}@media (max-width:560px){.metrics{grid-template-columns:repeat(2,1fr)}}.form textarea{font:inherit;font-size:15px;line-height:1.7;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--fg);width:100%;resize:vertical}.form textarea:focus{outline:2px solid var(--accent);outline-offset:-1px;border-color:var(--accent)}.form .hint{font-size:12.5px;color:var(--muted);margin:0}.form input[type=number]{max-width:140px}.radios{border:0;padding:0;margin:6px 0 0;display:flex;flex-direction:column;gap:6px}.radios legend{font-size:14px;color:var(--muted);padding:0}.radio{display:flex;align-items:baseline;gap:8px;font-size:15px}.radio em{font-style:normal;font-size:13px;color:var(--muted)}.prefixed{border:1px solid var(--line);border-radius:8px;background:var(--bg);display:flex;flex-direction:column;overflow:hidden}.prefixed:focus-within{outline:2px solid var(--accent);outline-offset:-1px;border-color:var(--accent)}.prefixed.over{border-color:#c4443c}.prefix-label{font-size:13px;font-weight:600;color:var(--muted);background:var(--soft);padding:7px 12px;border-bottom:1px solid var(--line);-webkit-user-select:none;-moz-user-select:none;user-select:none;cursor:not-allowed}.prefixed textarea{border:0;border-radius:0}.prefixed textarea:focus{outline:0}.counter-row{display:flex;flex-wrap:wrap;align-items:baseline;gap:10px;margin:2px 0 0}.counter{font-size:13px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:var(--muted)}.counter.over{color:#c4443c;font-weight:600}.hint{font-size:12.5px;color:var(--muted)}.bad{background:#fdecea;border:1px solid #f3b7b1;border-radius:8px;padding:10px 12px;margin:6px 0;font-size:14px;color:#8d2b23}.rowform{display:inline;margin:0}.toggle{font:inherit;font-size:12.5px;font-weight:600;padding:3px 10px;border-radius:999px;cursor:pointer;background:var(--soft);color:var(--muted);border:1px solid var(--line)}.toggle.on{background:#e9f7ef;color:#1c5c39;border-color:#a8dfc1}.toggle:disabled{opacity:.6;cursor:default}.linkish.danger{color:#c4443c}.linkish.danger:hover{color:#8d2b23}@media (prefers-color-scheme:dark){.dir.out{background:#16264a;color:#a9c4ff;border-color:#2f4a8f}.dir.stop{background:#3a3113;color:#f0d68a;border-color:#6b5a1f}.sub.warnish{color:#e0b155}.toggle.on{background:#12331f;color:#a9e5c3;border-color:#2c6b45}.bad{background:#3b1a17;border-color:#7a3a33}.bad,.counter.over{color:#f3b7b1}.prefixed.over{border-color:#7a3a33}.linkish.danger{color:#f3b7b1}.linkish.danger:hover{color:#ffd7d2}}.bizinfo{margin-top:16px;line-height:1.6}.bizinfo p{margin:2px 0;font-size:12.5px}.bizinfo a,.bizinfo p{color:var(--muted)}.copy{margin-top:14px;font-size:12.5px}