:root{--page:#f4faf6;--surface:#fff;--soft:#effbf3;--ink:#112219;--muted:#56665d;--line:#cfe0d5;--line-strong:#9bb9a6;--green:#21e56f;--green-deep:#087339;--green-dark:#073d23;--green-soft:#d9ffe6;--warn:#8a4b00;--warn-bg:#fff6e5;--shadow:0 12px 32px rgba(9,62,34,.08);--r:14px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--page);color:var(--ink);font-family:Pretendard,"Apple SD Gothic Neo","Noto Sans KR",system-ui,sans-serif;font-size:16px;line-height:1.65;word-break:keep-all;-webkit-font-smoothing:antialiased}
a{color:var(--green-deep)}
a:hover{color:var(--green-dark)}
h1,h2,h3{line-height:1.25;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:34px;font-weight:800}
h2{font-size:24px;font-weight:800}
h3{font-size:18px;font-weight:700}
p{margin:0 0 1em}
img{max-width:100%;height:auto;display:block}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:8px 12px;border-radius:8px;z-index:99}
.skip:focus{left:8px}
.container{max-width:1160px;margin:0 auto;padding:0 24px}
.narrow{max-width:820px}
.muted{color:var(--muted)}
.small{font-size:14px}
.kicker{color:var(--green-deep);font-weight:700;font-size:14px;letter-spacing:.02em;margin:0 0 8px}
.icon{display:inline-flex;width:40px;height:40px;border-radius:12px;background:var(--green-soft);color:var(--green-deep);align-items:center;justify-content:center;flex:none}
.icon svg{width:22px;height:22px}
.icon.sm{width:26px;height:26px;border-radius:8px;margin-right:8px;vertical-align:middle}
.icon.sm svg{width:15px;height:15px}
.btn{display:inline-block;background:var(--green-deep);color:#fff;font-weight:700;padding:11px 18px;border-radius:10px;text-decoration:none;border:2px solid var(--green-deep)}
.btn:hover{background:var(--green-dark);color:#fff}
.btn.ghost{background:transparent;color:var(--green-deep)}
.btn.ghost:hover{background:var(--green-soft)}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
/* header */
.site-head{position:sticky;top:0;z-index:20;background:rgba(244,250,246,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.site-head .row{display:flex;align-items:center;gap:20px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);flex:none}
.brand img{width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--line)}
.brand strong{display:block;font-size:19px;line-height:1.1}
.brand small{display:block;color:var(--muted);font-size:12px}
.nav{display:flex;gap:4px;flex:1;flex-wrap:wrap}
.nav a{text-decoration:none;color:var(--ink);font-weight:600;padding:8px 12px;border-radius:9px;font-size:15px}
.nav a:hover{background:var(--green-soft)}
.nav a[aria-current=page]{background:var(--ink);color:#fff}
.head-search{display:flex;border:2px solid var(--line-strong);border-radius:10px;overflow:hidden;background:#fff;flex:none}
.head-search input{border:0;padding:8px 12px;font:inherit;font-size:14px;width:180px;outline:none}
.head-search button{border:0;background:var(--green-deep);color:#fff;font-weight:700;padding:0 14px;cursor:pointer;font:inherit;font-size:14px}
/* hero */
.hero{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:center;padding:44px 24px 24px}
.hero h1{font-size:40px;margin-bottom:14px}
.hero .lead{font-size:20px;font-weight:600;color:var(--green-dark)}
.hero-art{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);padding:28px;text-align:center}
.hero-art img{width:min(100%,380px);margin:0 auto}
.art-note,.art-tag{position:absolute;background:var(--ink);color:#fff;font-size:13px;font-weight:700;padding:6px 12px;border-radius:999px}
.art-note{top:16px;left:16px}
.art-tag{bottom:16px;right:16px;background:var(--green-deep)}
.strip{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:8px auto 24px}
.strip p{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px}
.strip strong{display:block;font-size:20px;color:var(--green-dark)}
.strip span{color:var(--muted);font-size:14px}
/* sections */
.section{margin:36px auto}
.section-head{margin-bottom:18px;max-width:760px}
.section-head h2{font-size:28px}
.group{margin:24px 0 32px}
.group-head{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:12px}
.group-head h3,.group-head h2{margin:0;font-size:20px}
.group-head p{margin:0;color:var(--muted)}
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.cat-card{position:relative;display:flex;gap:12px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px;text-decoration:none;color:var(--ink);transition:border-color .15s,transform .15s}
.cat-card:hover{border-color:var(--green);transform:translateY(-2px)}
.cat-card h3{margin:2px 0 4px;font-size:17px}
.cat-card p{margin:0 0 6px;font-size:14px;color:var(--muted)}
.cat-card small{color:var(--green-deep);font-weight:600;font-size:13px}
.cat-card .count{position:absolute;top:12px;right:12px;font-size:12px;font-weight:700;color:var(--green-dark);background:var(--green-soft);padding:2px 8px;border-radius:999px}
.todo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.todo-grid.big{grid-template-columns:repeat(2,1fr)}
.todo-grid.col{grid-template-columns:1fr}
.todo-card{display:flex;gap:12px;align-items:center;background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--green);border-radius:var(--r);padding:14px 16px;text-decoration:none;color:var(--ink)}
.todo-card:hover{border-color:var(--green-deep);border-left-color:var(--green-deep)}
.todo-card h3{font-size:16px;margin:0 0 2px}
.todo-card p{margin:0;font-size:13px;color:var(--muted)}
.todo-card .arrow{margin-left:auto;color:var(--green-deep);font-weight:800}
.reading{max-width:820px}
.reading h2{font-size:26px;margin-top:8px}
.reading h3{margin-top:22px;font-size:19px}
.help-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.help-grid a{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;text-decoration:none;color:var(--ink)}
.help-grid a:hover{border-color:var(--green)}
.help-grid span{color:var(--green-deep);font-size:13px;font-weight:700}
.help-grid h3{margin:6px 0 4px}
.help-grid p{margin:0;color:var(--muted);font-size:14px}
.note{background:var(--soft);border:1px dashed var(--line-strong);border-radius:var(--r);padding:18px 22px;margin:24px auto 40px;max-width:1112px}
.note p{margin:6px 0 8px;color:var(--muted)}
/* page head */
.crumb{font-size:14px;color:var(--muted);padding-top:16px;display:flex;gap:8px;flex-wrap:wrap}
.crumb a{color:var(--muted)}
.page-head{padding:18px 24px 8px;max-width:1160px}
.page-head h1 small{display:block;font-size:16px;font-weight:600;color:var(--muted);margin-top:6px}
.page-head p{max-width:780px;font-size:17px}
.page-head .lead{font-size:19px;font-weight:600;color:var(--green-dark)}
.page-head .who{background:var(--green-soft);display:inline-block;padding:8px 14px;border-radius:10px;font-size:15px}
.mail{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.two-col{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;align-items:start}
.side{position:sticky;top:84px}
.side-box{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;margin-bottom:14px}
.side-box h2{font-size:15px;margin-bottom:8px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.side-list{list-style:none;margin:0;padding:0}
.side-list li{display:flex;justify-content:space-between;align-items:center;padding:7px 0;border-top:1px solid var(--line);font-size:15px}
.side-list li:first-child{border-top:0}
.side-list a{text-decoration:none;color:var(--ink);display:flex;align-items:center}
.side-list a[aria-current=page]{color:var(--green-deep);font-weight:700}
.side-list span{color:var(--muted);font-size:13px}
.side-list.compact li{padding:5px 0;font-size:14px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;background:var(--soft);border:1px solid var(--line);border-radius:999px;padding:4px 12px 4px 4px;text-decoration:none;color:var(--ink);font-size:14px;font-weight:600}
.chip:hover{border-color:var(--green)}
/* tables */
.tbl{width:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;font-size:15px}
.tbl th,.tbl td{text-align:left;padding:10px 12px;border-top:1px solid var(--line);vertical-align:top}
.tbl th{background:var(--soft);border-top:0;font-size:13px;color:var(--muted)}
.tbl td.dom{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;color:var(--muted);white-space:nowrap}
/* site cards */
.sites{display:grid;grid-template-columns:1fr;gap:14px}
.site{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;scroll-margin-top:90px}
.site:target{border-color:var(--green-deep);box-shadow:0 0 0 3px var(--green-soft)}
.site-head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.site-head h3{margin:0;font-size:19px}
.dom{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;color:var(--muted)}
.site .desc{margin:8px 0 10px}
.site dl{margin:0 0 12px;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.site dl div{background:var(--soft);border-radius:10px;padding:10px 12px}
.site dt{font-size:12px;font-weight:700;color:var(--green-deep);margin-bottom:2px}
.site dd{margin:0;font-size:14px}
.go{display:inline-block;font-weight:700;text-decoration:none;border:2px solid var(--green-deep);border-radius:9px;padding:7px 12px;font-size:14px}
.go:hover{background:var(--green-deep);color:#fff}
/* todo page */
.summary{background:var(--surface);border:1px solid var(--line);border-left:5px solid var(--green);border-radius:var(--r);padding:18px 22px;margin-top:20px}
.summary h2{font-size:17px;margin-bottom:8px}
.toc{margin:0;padding-left:22px;columns:2;column-gap:28px}
.toc li{margin:3px 0;font-size:15px;break-inside:avoid}
.toc a{text-decoration:none;font-weight:600}
.steps{list-style:none;margin:0;padding:0}
.step{display:flex;gap:16px;padding:20px 0;border-top:1px solid var(--line);scroll-margin-top:90px}
.step:first-child{border-top:0}
.step-no{flex:none;width:38px;height:38px;border-radius:50%;background:var(--ink);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center}
.step-body{flex:1;min-width:0}
.step-body h3{font-size:19px}
.step-sites{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:4px 0 10px}
.step-sites .lbl{font-size:12px;font-weight:700;color:var(--muted);margin-right:2px}
.sref{display:inline-flex;align-items:center;background:var(--green-soft);border-radius:8px;padding:3px 6px 3px 10px;font-size:14px;font-weight:600}
.sref a{text-decoration:none}
.sref .mini{margin-left:6px;background:var(--green-deep);color:#fff;border-radius:6px;padding:0 6px;font-size:13px}
.tip{background:var(--soft);border-radius:10px;padding:10px 14px;font-size:14px;margin:0}
.tip b{color:var(--green-deep);margin-right:6px}
.warn{background:var(--warn-bg);border:1px solid #f1d9a8;border-radius:var(--r);padding:16px 22px}
.warn h2{font-size:18px;color:var(--warn);margin-bottom:6px}
.warn ul{margin:0;padding-left:20px}
.warn li{margin:4px 0}
.faq{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:0 18px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:700;padding:14px 0;list-style:none;display:flex;gap:10px}
.faq summary::before{content:"Q";color:var(--green-deep);flex:none}
.faq p{margin:0 0 14px;color:#2b3a31}
.faq-list .faq p{font-size:15px}
.links-row{display:flex;gap:18px;flex-wrap:wrap;margin:28px 0}
.links-row a{font-weight:700;text-decoration:none}
.basics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.basic{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:0 16px}
.basic summary{cursor:pointer;font-weight:700;padding:12px 0;display:flex;justify-content:space-between}
.basic summary span{color:var(--muted);font-weight:600;font-size:13px}
.basic ul{list-style:none;margin:0;padding:0 0 12px;display:grid;grid-template-columns:1fr 1fr;gap:4px}
.basic a{text-decoration:none;color:var(--ink);font-size:14px}
.basic a span{color:var(--green-deep);margin-left:3px;font-size:12px}
.search-result{background:var(--surface);border:1px solid var(--green-deep);border-radius:var(--r);padding:16px 20px;margin-top:16px}
.search-result h2{font-size:18px}
.hit{display:flex;flex-wrap:wrap;gap:4px 10px;align-items:baseline;padding:8px 0;border-top:1px solid var(--line);font-size:15px}
.hit:first-child{border-top:0}
.hit .tag{flex:none;font-size:11px;font-weight:700;color:var(--green-deep);background:var(--green-soft);padding:2px 7px;border-radius:6px}
.hit .d{color:var(--muted);font-size:13px;flex-basis:100%}
.hit .mini{font-weight:700;text-decoration:none}
.updates{list-style:none;margin:20px 0 40px;padding:0}
.updates li{display:grid;grid-template-columns:110px 1fr;gap:14px;padding:12px 0;border-top:1px solid var(--line)}
.updates time{font-weight:700;color:var(--green-deep)}
.updates p{margin:0}
/* footer */
.site-foot{background:var(--ink);color:#c9d7ce;margin-top:56px;padding:40px 0 28px;font-size:14px}
.site-foot a{color:#fff;text-decoration:none}
.site-foot h3{color:#fff;font-size:15px;margin-bottom:8px}
.site-foot ul{list-style:none;margin:0;padding:0}
.site-foot li{margin:4px 0}
.site-foot .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:28px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.foot-brand img{border-radius:50%;background:#fff}
.foot-brand strong{display:block;color:#fff;font-size:17px}
.foot-brand small{color:#9fb3a7}
.site-foot .muted{color:#8ea597;margin-top:20px;border-top:1px solid #2a3d32;padding-top:14px}
@media (max-width:960px){
  .hero{grid-template-columns:1fr;padding-top:28px}
  .hero-art{max-width:420px}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .todo-grid,.todo-grid.big{grid-template-columns:repeat(2,1fr)}
  .two-col{grid-template-columns:1fr}
  .side{position:static}
  .strip{grid-template-columns:repeat(2,1fr)}
  .basics{grid-template-columns:repeat(2,1fr)}
  .help-grid{grid-template-columns:1fr}
  .site-foot .cols{grid-template-columns:1fr}
  .head-search{display:none}
}
@media (max-width:640px){
  .container{padding:0 16px}
  h1,.hero h1{font-size:27px}
  h2,.section-head h2,.reading h2{font-size:22px}
  .site-head .row{flex-wrap:wrap;gap:0;min-height:0;padding-top:8px}
  .brand strong{font-size:17px}
  .nav{order:2;flex:0 0 calc(100% + 32px);margin:0 -16px;padding:4px 40px 8px 16px;gap:2px;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;-webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 36px),transparent);mask-image:linear-gradient(90deg,#000 calc(100% - 36px),transparent)}
  .nav::-webkit-scrollbar{display:none}
  .nav a{flex:none;white-space:nowrap;padding:8px 11px;font-size:14px}
  html{scroll-padding-top:110px}
  .site:target,.step{scroll-margin-top:120px}
  .cat-grid,.todo-grid,.todo-grid.big,.basics{grid-template-columns:1fr}
  .site dl{grid-template-columns:1fr}
  .toc{columns:1}
  .tbl td.dom{white-space:normal;word-break:break-all}
  .updates li{grid-template-columns:1fr}
  .hero{padding-left:16px;padding-right:16px}
  .hero-art{padding:18px}
}