:root{--paper:#FAFBFC;--ink:#0F1B2D;--ink2:#3B4658;--mute:#5B6475;--line:#E3E7EE;--cobalt:#2457C5;--sky:#57D0FF;--skyl:#EAF7FE;--red:#E5261F;--card:#fff;
--mono:"JetBrains Mono",ui-monospace,monospace;--sans:"Pretendard Variable",Pretendard,"Apple SD Gothic Neo","Noto Sans KR",system-ui,sans-serif;--wm:"Space Grotesk",var(--sans)}
*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.6;-webkit-font-smoothing:antialiased;word-break:keep-all;overflow-wrap:anywhere}
a{color:var(--cobalt);text-decoration:none}a:hover{text-decoration:underline}
.in{max-width:1120px;margin:0 auto;padding:0 20px}
.top{position:sticky;top:0;z-index:9;background:rgba(250,251,252,.9);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top .in{display:flex;align-items:center;justify-content:space-between;gap:12px;height:58px}
.mark{font-family:var(--wm);font-weight:700;font-size:19px;letter-spacing:-.02em;color:var(--ink);white-space:nowrap}.mark:hover{text-decoration:none}
.mark i{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--red);margin-left:3px}
nav{display:flex;gap:18px;align-items:center;font-size:14px;overflow-x:auto;scrollbar-width:none}nav::-webkit-scrollbar{display:none}
nav a{color:var(--ink2);white-space:nowrap}nav .cta{background:var(--cobalt);color:#fff;padding:7px 14px;border-radius:999px;font-weight:600}nav .cta:hover{text-decoration:none;background:#1c47a6}
.hero{padding:72px 0 44px}
.kick{font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--mute);text-transform:uppercase;margin:0 0 18px}
.hero h1{font-size:clamp(34px,6vw,60px);line-height:1.12;letter-spacing:-.03em;margin:0 0 20px;font-weight:800}
.hero h1 span{position:relative;white-space:nowrap}.hero h1 span:after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:5px;border-radius:3px;background:var(--sky)}
.hero .lead{font-size:18px;color:var(--ink2);max-width:720px;margin:0 0 30px}
.stats{display:flex;flex-wrap:wrap;gap:12px 36px;padding-top:22px;border-top:1px solid var(--line)}
.stats div{font-size:14px;color:var(--mute)}.stats b{display:block;font-family:var(--wm);font-size:30px;color:var(--ink);letter-spacing:-.02em;line-height:1.1}
section.blk{padding:44px 0}
.h2row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:6px}
h2{font-size:26px;letter-spacing:-.02em;margin:0}h2 small{font-family:var(--mono);font-size:13px;color:var(--mute);font-weight:500;margin-left:8px}
.desc{color:var(--mute);margin:0 0 22px;max-width:760px;font-size:15px}
.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px 20px 16px;display:flex;flex-direction:column;transition:border-color .15s,box-shadow .15s}
.card:hover{border-color:#c9d3e3;box-shadow:0 10px 30px -18px rgba(15,27,45,.35)}
.org{font-family:var(--mono);font-size:12px;color:var(--mute);margin:0 0 8px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.badge{font-family:var(--sans);font-size:11px;font-weight:600;color:var(--ink2);background:var(--skyl);border-radius:6px;padding:1px 7px}.badge.new{background:#FFF1D6;color:#8a5a00}.badge.tool{background:#EEF1F6;color:var(--mute);font-family:var(--mono);font-weight:500}
.card h3{font-size:17px;line-height:1.4;margin:0 0 8px;letter-spacing:-.01em}.card h3 a{color:var(--ink)}
.sum{font-size:14px;color:var(--ink2);margin:0 0 14px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.meta{margin:auto 0 0;display:flex;justify-content:space-between;align-items:center;font-family:var(--mono);font-size:12px;color:var(--mute)}
.more{font-family:var(--sans);font-size:13px;font-weight:600}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 22px}
.chip{font:inherit;font-size:13px;font-weight:600;border:1px solid var(--line);background:#fff;color:var(--ink2);padding:7px 14px;border-radius:999px;cursor:pointer}
.chip[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:#fff}
.sub{font-size:15px;font-weight:700;color:var(--ink2);margin:30px 0 12px;display:flex;align-items:center;gap:10px}.sub:before{content:"";width:18px;height:3px;border-radius:2px;background:var(--sky)}
.orgs{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px 28px;margin:0;padding:0}
.orgs div{margin:0}.orgs dt{font-family:var(--mono);font-size:12px;color:var(--mute);margin-bottom:6px}.orgs dd{margin:0;font-size:15px;line-height:1.75;color:var(--ink)}
.band{background:var(--ink);color:#DCE4F0;border-radius:20px;padding:40px 32px;margin:24px 0}
.band h2{color:#fff}.band p{max-width:720px}.band a.btn{display:inline-block;margin-top:10px;background:var(--sky);color:var(--ink);font-weight:700;padding:11px 20px;border-radius:999px}.band a.btn:hover{text-decoration:none;filter:brightness(1.05)}
.band a{color:var(--sky)}.band .acts{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 6px}.band .btn.ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.35)}.band .sub2{font-size:14px;margin-top:4px}
.books{display:grid;gap:12px;grid-template-columns:1.35fr 1fr}
.book{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 20px;display:flex;flex-direction:column;gap:2px;border-left:4px solid var(--sky)}.book .org{margin-bottom:2px}
.book h3{font-size:16px;line-height:1.4;margin:0 0 6px;color:var(--ink)}.book .more{font-size:13px;font-weight:600}.newbook{display:inline-flex;gap:8px;align-items:center;margin:0 0 26px;padding:8px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:14px;color:var(--ink2)}.newbook b{color:var(--cobalt)}.newbook:hover{text-decoration:none;border-color:#c9d3e3}
.book.feat{grid-row:span 3;padding:26px 26px 24px;background:var(--skyl);border-color:#cfe9f8;border-left-color:var(--cobalt)}.book.feat .sum{-webkit-line-clamp:unset;font-size:15px;margin:6px 0 18px}.book.feat h3{font-size:26px;letter-spacing:-.02em}.book.feat .go{align-self:flex-start;margin-top:auto}
.promo{margin:36px 0 24px;padding:22px 22px 18px;border-radius:16px;background:var(--skyl);border:1px solid #cfe9f8}.promo .kick{margin:0 0 8px;letter-spacing:.04em}.promo .pname{margin:0 0 6px;color:var(--ink)}.promo p{margin:0 0 12px;color:var(--ink2);font-size:15px}.promo .who2{font-size:13px;color:var(--mute);margin:10px 0 0}a[href^="tel:"],a[href^="mailto:"]{white-space:nowrap}.band .who{font-size:15px;color:#fff;margin:14px 0 6px}
.foot{border-top:1px solid var(--line);padding:30px 0 50px;font-size:13px;color:var(--mute)}.foot p{margin:4px 0}
/* detail */
.crumb{font-size:13px;color:var(--mute);padding:28px 0 0}.crumb a{color:var(--mute)}
.dhead{padding:18px 0 8px}.dhead h1{font-size:clamp(28px,4.6vw,44px);line-height:1.2;letter-spacing:-.025em;margin:8px 0 18px}
.claim{font-size:18px;color:var(--ink);background:var(--skyl);border-radius:12px;padding:16px 18px;margin:0 0 16px}
.dsum{font-size:16px;color:var(--ink2);max-width:760px}
.facts{display:grid;grid-template-columns:120px 1fr;gap:8px 16px;margin:26px 0;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:15px}
.facts dt{color:var(--mute);font-family:var(--mono);font-size:12px;padding-top:3px}.facts dd{margin:0}
.go{display:inline-block;background:var(--cobalt);color:#fff;font-weight:700;padding:13px 22px;border-radius:999px;margin:4px 8px 4px 0}.go:hover{text-decoration:none;background:#1c47a6}
.go.ghost{background:#fff;color:var(--cobalt);border:1px solid var(--line)}
.rel{margin:40px 0 20px}.rel h2{font-size:20px}.rel ul{padding-left:18px}.rel li{margin:6px 0}
/* about */
.prose{max-width:760px;font-size:16px;color:var(--ink2)}.prose h2{margin:44px 0 14px;color:var(--ink)}
.prose ul{padding-left:20px}.prose li{margin:5px 0}
.meth{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px;margin-top:14px}
.meth div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}.meth h3{margin:0 0 6px;font-size:16px;color:var(--ink)}.meth p{margin:0;font-size:14px}
details{border-bottom:1px solid var(--line);padding:14px 0}summary{cursor:pointer;font-weight:700;color:var(--ink)}details p{margin:10px 0 0}
@media (max-width:640px){.hero{padding:44px 0 30px}.hero .lead{font-size:16px}nav{gap:14px;font-size:13px}nav a:not(.cta):nth-child(3){display:none}
.band{padding:28px 20px;border-radius:16px}.facts{grid-template-columns:88px 1fr}.books{grid-template-columns:1fr}.book.feat{grid-row:auto}.grid{grid-template-columns:1fr}}