*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:#21313b;background:#edf0f2;font:15px/1.8 "Malgun Gothic",Dotum,system-ui,sans-serif}a{color:#214d6b;text-underline-offset:4px}a:hover{color:#092b40}button,a,input{touch-action:manipulation}a:focus-visible{outline:3px solid #ab6913;outline-offset:4px}.skip{position:absolute;left:12px;top:-100px;background:#fff;padding:12px;z-index:5}.skip:focus{top:10px}.topline{background:#243d4c;color:#fff;padding:7px max(20px,calc((100vw - 1180px)/2));font-size:12px}header,main,footer{max-width:1220px;margin:auto;background:white}header{padding:24px 38px;display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:2px solid #243d4c}header>a{text-decoration:none;color:#243d4c;font-size:26px;letter-spacing:2px;font-weight:800}header>a span{display:block;font-size:11px;letter-spacing:0;font-weight:400}nav{display:flex;gap:24px;flex-wrap:wrap;font-size:13px}nav a{text-decoration:none}main{padding:0 38px 42px}h1,h2,h3{line-height:1.5;letter-spacing:-.8px}h1{font-size:42px;margin:8px 0 18px}h2{font-size:24px;margin:0 0 14px}h3{font-size:20px;margin:0 0 10px}.eyebrow,.number{font-size:12px;color:#526975;letter-spacing:.4px;font-weight:700;margin:0 0 8px}.lead{font-size:16px;color:#415563;line-height:1.95}.hero{display:grid;grid-template-columns:1.35fr 1fr;gap:38px;padding:44px 0;border-bottom:1px solid #aebbc3}.hero aside{background:#f0f4f5;padding:24px;border:1px solid #a9bac5;border-top:4px solid #243d4c}.hero aside h2{font-size:18px}.hero ol{list-style:none;padding:0;margin:0;counter-reset:task}.hero li{counter-increment:task;display:grid;grid-template-columns:26px 1fr;gap:0 8px;margin:16px 0}.hero li:before{content:counter(task,decimal-leading-zero);font-size:12px;color:#526975;grid-row:span 2}.hero li strong{font-size:14px}.hero li span{font-size:13px;color:#526975}.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 16px;border:1px solid #243d4c;text-decoration:none;font-weight:700;font-size:13px;background:#fff;color:#243d4c}.button:hover{background:#e6edf1}.primary{background:#243d4c;color:#fff}.primary:hover{background:#122d3b;color:#fff}.actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin:22px 0 12px}.actions>a:not(.button){font-size:13px}.fine{font-size:12px;color:#60717a}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin:36px 0 20px}.section-head>a{font-size:13px;white-space:nowrap}.tool-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.tool-grid article{border:1px solid #aebbc3;padding:22px;display:flex;flex-direction:column}.tool-grid h3{font-size:23px}.tool-grid article>p:not(.number){font-size:14px;color:#415563;margin:0 0 16px}.tool-grid dl{display:grid;grid-template-columns:78px 1fr;border-top:1px solid #c5d0d6;font-size:12px;margin:0 0 4px}.tool-grid dt,.tool-grid dd{border-bottom:1px solid #c5d0d6;padding:9px 0;margin:0}.tool-grid dt{font-weight:700}.tool-grid dd{color:#526975}.tool-grid .actions{margin-top:auto;padding-top:14px;gap:12px}.reading{display:grid;grid-template-columns:1fr 1.6fr;gap:46px;margin:42px 0;padding:30px;background:#f3f5f6;border-top:2px solid #243d4c}.reading p{font-size:14px;color:#526975}.reading article{border-bottom:1px solid #c5d0d6;padding-bottom:16px;margin-bottom:18px}.reading article:last-child{border:0;margin-bottom:0;padding-bottom:0}.reading h3{font-size:17px}.reading article p{margin:0}.principles{border-top:1px solid #aebbc3;padding-top:28px}.principles>div{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.principles h3{font-size:16px}.principles p{font-size:13px;color:#526975}.principles>a{font-size:13px}footer{background:#e3e9ed;padding:28px 38px;border-top:2px solid #243d4c}footer strong{font-size:20px;letter-spacing:2px}footer p{font-size:13px;color:#526975}footer nav{margin:18px 0}.article{padding-top:32px}.article>h1,.article>p,.article>h2,.article>ol,.article>ul,.article>dl,.article>blockquote,.article>table{max-width:900px;margin-left:auto;margin-right:auto}.article>h1{font-size:34px}.article>h2{font-size:22px;margin-top:32px;border-bottom:1px solid #bbc6cd;padding-bottom:10px}.article>p,.article>li{font-size:15px}.article>.button{margin-left:max(0px,calc((100% - 900px)/2));margin-top:15px}.article>.tool-grid{margin:25px 0}.article li{margin-bottom:8px}.article table{width:100%;border-collapse:collapse;font-size:14px}.article th,.article td{border:1px solid #b6c3cb;text-align:left;padding:12px;overflow-wrap:anywhere}.article th{background:#edf2f4}.article caption{text-align:left;font-size:13px;padding:8px 0}.callout,blockquote{background:#f1f4f6;border-left:4px solid #243d4c;padding:18px}.explain-list dt{font-weight:700;border-bottom:1px solid #b6c3cb;margin-top:18px}.explain-list dd{margin:10px 0 20px;color:#415563}code{font:13px/1.7 monospace;background:#eef2f4;padding:2px 4px}@media(max-width:900px){header{padding:20px 24px}nav{gap:14px}main{padding-left:24px;padding-right:24px}.hero{gap:24px;grid-template-columns:1fr 1fr}h1{font-size:34px}.tool-grid{grid-template-columns:1fr}.tool-grid article{display:block}.tool-grid .actions{margin-top:14px}.reading{gap:24px;padding:22px}.principles>div{gap:18px}}@media(max-width:640px){body{font-size:14px}.topline{font-size:11px;padding:7px 18px}header{align-items:start;padding:16px 18px;gap:12px;flex-direction:column}header>a{font-size:23px}header>a span{display:none}nav{gap:0 18px;font-size:12px}nav a{padding:7px 0;display:inline-flex;min-height:36px;align-items:center}main{padding:0 18px 28px}.hero{grid-template-columns:1fr;padding:28px 0;gap:24px}h1{font-size:32px;letter-spacing:-1px}.lead{font-size:14px}.hero aside{padding:18px}.hero li{margin:12px 0}.hero .actions{align-items:stretch;flex-direction:column}.section-head{align-items:start;flex-direction:column;gap:4px;margin:28px 0 16px}h2{font-size:22px}.tool-grid article{padding:19px}.reading{grid-template-columns:1fr;margin:28px 0;padding:20px;gap:8px}.reading h2 br{display:none}.principles>div{grid-template-columns:1fr;gap:10px}.principles h3{margin-bottom:5px}.principles p{margin:0 0 10px}footer{padding:24px 18px}.article{padding-top:24px}.article>h1{font-size:28px}.article>h2{font-size:20px}.article th,.article td{padding:9px;font-size:12px}.article table{table-layout:fixed}.article>p,.article li{font-size:14px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}