:root {
  --bg:#f1f0ed;--paper:#fff;--ink:#111413;--muted:#606764;--line:#d7d9d6;
  --blue:#145cff;--blue-soft:#dce8ff;--orange:#ff7048;--lime:#d9ee72;
  --shadow:0 18px 50px rgba(17,20,19,.08);
  font-family:Inter,Pretendard,"Apple SD Gothic Neo","Noto Sans KR",system-ui,sans-serif;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);line-height:1.62;-webkit-font-smoothing:antialiased}
button,input,textarea{font:inherit;color:inherit}button{cursor:pointer}img{display:block;max-width:100%}
.accent{height:6px;background:linear-gradient(90deg,#151817 0 61%,var(--blue) 61% 84%,var(--orange) 84%)}
.site-head{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;min-height:70px;padding:10px max(24px,calc((100vw - 1180px)/2));border-bottom:1px solid var(--line);background:rgba(255,255,255,.94);backdrop-filter:blur(14px)}
.brand{color:var(--ink);font-size:12px;font-weight:850;letter-spacing:.08em;text-decoration:none}.site-head nav{display:flex;gap:5px}.site-head nav button,.lang button,.depth button{border:0;border-radius:999px;background:transparent;padding:9px 13px;font-size:13px;font-weight:750}.site-head nav button.on{background:var(--ink);color:#fff}.head-tools{justify-self:end;display:flex;gap:8px;align-items:center}.lang,.depth{display:flex;border:1px solid var(--line);border-radius:999px;background:#fff}.lang button,.depth button{padding:7px 11px}.lang button.on{background:var(--blue);color:#fff}.depth button.on{background:var(--ink);color:#fff}
main{width:min(1180px,calc(100% - 48px));margin:auto}
.hero{display:grid;grid-template-columns:1.03fr .97fr;gap:58px;align-items:center;min-height:650px;padding:64px 0}
.eyebrow,.top-findings header p,.blueprint header p,.ask>p,.collection>p{margin:0 0 12px;color:var(--blue);font-size:11px;font-weight:900;letter-spacing:.14em}
.hero h1{max-width:650px;margin:0;font-size:clamp(4rem,7.2vw,7.4rem);line-height:.88;letter-spacing:-.08em}.hero-sub{max-width:650px;margin:26px 0 10px;font-size:1.25rem;line-height:1.5}.source-line{color:var(--muted);font-size:13px}
.metrics{display:grid;grid-template-columns:repeat(3,1fr);margin-top:36px;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}.metrics div{min-height:118px;padding:19px 18px;border-right:1px solid var(--ink)}.metrics div:first-child{padding-left:0}.metrics div:last-child{border-right:0}.metrics strong{display:block;font-size:2.25rem;line-height:1;letter-spacing:-.06em}.metrics span{display:block;margin-top:9px;font-size:11px;font-weight:750;line-height:1.4}.hero-copy>small{display:block;margin-top:10px;color:var(--muted);font-size:10px}.hero-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}.hero-actions button{border:1px solid var(--ink);border-radius:999px;background:#fff;padding:10px 14px;font-size:12px;font-weight:800}.hero-actions button:first-child{background:var(--ink);color:#fff}
.hero-art{position:relative;min-height:520px;overflow:hidden;border-radius:7px;background:linear-gradient(145deg,#dfeaff 0 48%,#a8c4ff 48% 100%);box-shadow:var(--shadow)}.hero-art:before{content:"";position:absolute;width:390px;height:390px;right:-130px;bottom:-150px;border:76px solid var(--blue);border-radius:50%}.hero-art:after{content:"✦";position:absolute;right:48px;top:36px;color:var(--orange);font-size:88px}.hero-art>span{position:absolute;top:32px;left:34px;font-size:11px;font-weight:900;letter-spacing:.14em}.hero-art>strong{position:absolute;top:86px;left:31px;font-size:clamp(3.4rem,5.5vw,5.8rem);line-height:.82;letter-spacing:-.08em}.hero-art>img{position:absolute;width:62%;right:7%;bottom:7%;border:9px solid #fff;box-shadow:0 20px 46px rgba(17,20,19,.23);transform:rotate(-4deg)}.art-card{position:absolute;z-index:4;padding:12px 17px;border:1px solid var(--ink);background:#fff;font-weight:900;box-shadow:7px 7px 0 var(--ink)}.card-a{left:35px;bottom:35px}.card-b{right:32px;bottom:86px;background:var(--lime)}
.top-findings{padding:78px 0}.top-findings header{display:flex;justify-content:space-between;align-items:end;padding-bottom:24px;border-bottom:2px solid var(--ink)}.top-findings h2,.blueprint h2{margin:0;font-size:2.35rem;letter-spacing:-.05em}.top-findings>div{display:grid;grid-template-columns:1fr 1fr;border-left:1px solid var(--line)}.top-findings article{position:relative;min-height:230px;padding:31px 34px 28px 78px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.55)}.top-findings article>span{position:absolute;left:30px;top:32px;font-size:13px;font-weight:900}.top-findings h3{margin:0 0 11px;font-size:1.25rem;line-height:1.35;letter-spacing:-.025em}.top-findings article p{margin:0;color:var(--muted);font-size:.96rem}
.blueprint{scroll-margin-top:90px;margin:30px 0 90px;border:1px solid var(--line);border-radius:7px;background:#fff}.blueprint header{display:grid;grid-template-columns:1fr auto;align-items:end;padding:30px 32px;border-bottom:1px solid var(--line)}.blueprint header p{grid-column:1/-1}.blueprint header span{color:var(--muted);font-size:13px}.blueprint>div{display:grid;grid-template-columns:repeat(2,1fr)}.blueprint>div button{display:grid;grid-template-columns:42px 1fr;gap:13px;min-height:76px;padding:17px 22px;border:0;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff;text-align:left;font-size:13px;font-weight:720;line-height:1.4}.blueprint>div button:hover{background:var(--blue-soft)}.blueprint>div button span{color:var(--blue);font-weight:900}
.reading-layout{display:grid;grid-template-columns:225px minmax(0,1fr);gap:30px;align-items:start;padding-bottom:100px}.rail{position:sticky;top:90px;max-height:calc(100vh - 110px);overflow:auto;border:1px solid var(--line);border-radius:7px;background:#fff}.rail>p{margin:0;padding:16px;border-bottom:1px solid var(--line);color:var(--muted);font-size:11px;font-weight:900;letter-spacing:.09em}.rail button{display:grid;grid-template-columns:32px 1fr;gap:7px;width:100%;padding:9px 13px;border:0;border-left:3px solid transparent;background:#fff;text-align:left}.rail button span{font-size:12px;font-weight:900}.rail button b{font-size:11px;line-height:1.35}.rail button:hover{background:#f5f6f5}.rail button.active{border-left-color:var(--blue);background:var(--blue-soft)}
.chapters{display:grid;gap:26px}.chapter{scroll-margin-top:90px;padding:35px 39px 31px;border:1px solid var(--line);border-radius:7px;background:#fff}.chapter>header{display:flex;justify-content:space-between;gap:18px;align-items:start;padding-bottom:15px;border-bottom:1px solid var(--line)}.chapter>header p{margin:0 0 5px;color:var(--blue);font-size:11px;font-weight:900;letter-spacing:.08em}.chapter>header button{border:0;background:transparent;color:var(--blue);font-size:11px;font-weight:850}.claim{display:inline-block;padding:3px 7px;border-radius:4px;background:#edf1ef;color:var(--muted);font-size:10px;font-weight:800}.claim.vendor{background:#fff0df;color:#835000}.claim.technical,.claim.method{background:var(--blue-soft);color:#1649b4}.claim.action{background:#e7f5d0;color:#456213}
.chapter h2{max-width:760px;margin:24px 0 17px;font-size:clamp(1.8rem,3vw,2.7rem);line-height:1.2;letter-spacing:-.05em}.lede{margin:0;padding:19px 21px;border-left:3px solid var(--blue);background:#f4f7ff;font-size:1.06rem;line-height:1.72}.chapter>h3{margin:27px 0 12px;color:var(--blue);font-size:11px;letter-spacing:.08em}.chapter>ol{margin:0;padding:20px 23px 7px 48px;border:1px solid #e2e5e3;border-radius:6px;background:#fbfcfb}.chapter>ol li{margin:0 0 14px;padding-left:7px;line-height:1.67}.chapter>ol li::marker{color:var(--blue);font-weight:900}.figures{display:grid;gap:16px;margin-top:22px}.figures figure{margin:0;padding:14px;border:1px solid var(--line);border-radius:6px;background:#fff}.figures figure>span{display:inline-block;margin-bottom:10px;padding:3px 7px;border-radius:4px;background:#e7f1ed;color:#17674f;font-size:10px;font-weight:850}.figures img{width:100%;border-radius:3px}.figures figcaption{margin-top:10px;color:var(--muted);font-size:11px}.chapter footer{margin-top:24px;padding-top:19px;border-top:1px solid var(--line)}.reactions{display:flex;gap:7px}.reactions button{width:43px;height:38px;border:1px solid var(--line);border-radius:999px;background:#fff}.reactions button.on{border-color:var(--ink);background:var(--ink)}.chapter textarea{width:100%;min-height:82px;margin-top:11px;padding:12px;border:1px solid var(--line);border-radius:6px;resize:vertical}
.timeline{display:grid;grid-template-columns:repeat(3,1fr);margin-top:22px;border:1px solid var(--ink)}.timeline div{padding:20px;border-right:1px solid var(--ink)}.timeline div:last-child{border:0}.timeline strong{font-size:1.2rem}.timeline p{margin:8px 0 0;color:var(--muted);font-size:13px}
.deep-list{margin-top:0}.viz{margin:22px 0 8px;padding:18px;border:1px solid var(--ink);background:#fbfcfb}.viz>p{margin:0 0 14px;color:var(--blue);font-size:10px;font-weight:900;letter-spacing:.1em}.compare,.six,.audit,.stack{display:grid;grid-template-columns:1fr 1fr;gap:10px}.six,.audit{grid-template-columns:repeat(3,1fr)}.stack{grid-template-columns:repeat(3,1fr)}.compare article,.six article,.audit article,.stack article{padding:14px;border:1px solid var(--line);background:#fff}.compare strong,.six strong,.stack strong{display:block;margin-bottom:6px}.compare p,.six p,.audit p,.stack p,.viz-note{margin:0;color:var(--muted);font-size:13px;line-height:1.5}.vendor-row{grid-column:1/-1;display:grid;grid-template-columns:repeat(5,1fr);margin-top:4px;border:1px solid var(--ink)}.vendor-row div{padding:12px;border-right:1px solid var(--ink)}.vendor-row div:last-child{border:0}.vendor-row b{display:block;font-size:1.35rem}.vendor-row span,.viz small{display:block;margin-top:6px;color:var(--muted);font-size:11px}.field-five{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin:0;padding:0;list-style:none}.field-five li{padding:14px 10px;border:1px solid var(--ink);background:#fff;font-weight:800;text-align:center}.field-five span{display:block;margin-bottom:6px;color:var(--blue);font-size:11px}.split{display:grid;grid-template-columns:1.4fr .8fr;min-height:160px}.split>div{padding:18px;color:#fff}.split .off{background:#145cff}.split .on{background:#111413}.split b{display:block;font-size:2.6rem;letter-spacing:-.06em}.split span{display:block;margin:4px 0 10px;font-size:12px;font-weight:800}.split p{margin:0;font-size:13px;line-height:1.45;opacity:.9}.pyramid{display:grid;gap:6px;margin-top:12px}.pyramid i{display:block;padding:11px 14px;font-style:normal;font-size:13px;font-weight:750;text-align:center}.pyramid i:nth-child(1){background:#d9ee72}.pyramid i:nth-child(2){background:#dce8ff;margin:0 28px}.pyramid i:nth-child(3){background:#fff;border:1px solid var(--line);margin:0 56px}.claim-table{width:100%;border-collapse:collapse;font-size:13px}.claim-table th,.claim-table td{padding:10px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.claim-table th{color:var(--muted);font-size:10px;letter-spacing:.08em}.glossary{display:grid;gap:10px;margin:0}.glossary div{display:grid;grid-template-columns:160px 1fr;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}.glossary dt{font-weight:800}.glossary dd{margin:0;color:var(--muted)}
@media print{header.site-head,.mentor-open,.mentor,.chapter footer,.ask form,.hero-actions,.chapter>header button{display:none!important}body{background:#fff}.chapter{break-inside:avoid}}
.ask{padding:36px;border:1px solid var(--line);border-radius:7px;background:#fff}.ask h2{margin:0 0 16px;font-size:2rem;letter-spacing:-.04em}.suggestions{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}.suggestions button{padding:6px 9px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--muted);font-size:12px}.ask form{display:flex;gap:8px}.ask input{flex:1;min-width:0;padding:12px;border:1px solid var(--line);border-radius:5px}.ask form button{border:0;border-radius:5px;background:var(--ink);color:#fff;padding:10px 17px;font-weight:800}.ask #answer>p{padding:16px;border-left:3px solid var(--blue);background:var(--blue-soft)}.ask #answer button{border:0;background:transparent;color:var(--blue);font-weight:800}
.collection{min-height:calc(100vh - 76px);padding:72px 0}.collection h1{margin:0 0 30px;font-size:clamp(3rem,7vw,6rem);line-height:.95;letter-spacing:-.07em}.collection>div{display:grid;grid-template-columns:1fr 1fr;gap:14px}.collection article{padding:24px;border:1px solid var(--line);border-radius:7px;background:#fff}.collection article h2{font-size:1.25rem}.collection article button{border:0;background:transparent;color:var(--blue);font-weight:800}.empty{padding:40px;border-top:1px solid var(--ink);color:var(--muted)}
.mentor-open{position:fixed;right:20px;bottom:20px;z-index:30;border:0;border-radius:999px;background:var(--ink);color:#fff;padding:13px 18px;font-weight:850;box-shadow:var(--shadow)}.mentor{position:fixed;right:18px;bottom:18px;z-index:30;display:flex;flex-direction:column;width:min(410px,calc(100vw - 24px));height:min(620px,calc(100vh - 36px));overflow:hidden;border:1px solid #272d2a;border-radius:14px;background:#fff;box-shadow:0 24px 70px rgba(17,20,19,.28)}.mentor>header{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;background:var(--ink);color:#fff}.mentor>header span{display:block;color:#bfc7c3;font-size:10px}.mentor>header button{border:0;background:transparent;color:#fff}.thread{flex:1;overflow:auto;padding:13px;background:#f3f4f2}.mentor-msg>p,.mine>p{margin:0 0 8px;padding:12px 14px;border:1px solid var(--line);border-radius:10px;background:#fff;font-size:13px}.mentor-msg aside{margin-bottom:9px;padding:11px 13px;border:1px solid #edda84;border-radius:10px;background:#fff8d7}.mentor-msg aside span,.mine>span{display:block;margin-bottom:3px;color:var(--muted);font-size:9px;font-weight:900;letter-spacing:.08em}.mine{text-align:right}.mine>p{display:inline-block;background:var(--blue);color:#fff;text-align:left}.mentor-choices{display:grid;gap:6px}.mentor-choices button{padding:10px;border:1px solid var(--line);border-radius:8px;background:#fff;text-align:left}.mentor>form{display:flex;gap:6px;padding:10px;border-top:1px solid var(--line)}.mentor>form input{flex:1;min-width:0;padding:9px;border:1px solid var(--line);border-radius:7px}.mentor>form button{border:0;border-radius:7px;background:var(--ink);color:#fff;padding:8px 12px}
@media(max-width:900px){main{width:min(760px,calc(100% - 32px))}.site-head{grid-template-columns:1fr auto}.site-head nav{order:3;grid-column:1/-1;justify-content:center;border-top:1px solid var(--line);padding-top:8px}.head-tools{order:2}.six,.audit,.stack,.field-five,.vendor-row,.split{grid-template-columns:1fr}.vendor-row div{border-right:0;border-bottom:1px solid var(--ink)}.glossary div{grid-template-columns:1fr}.pyramid i:nth-child(2),.pyramid i:nth-child(3){margin:0}.hero{grid-template-columns:1fr;gap:30px;min-height:0;padding:54px 0}.hero-art{min-height:470px}.top-findings>div{grid-template-columns:1fr}.top-findings article{min-height:0}.reading-layout{display:block}.rail{display:none}.timeline{grid-template-columns:1fr}.timeline div{border-right:0;border-bottom:1px solid var(--ink)}}
@media(max-width:620px){.site-head{padding:10px 12px}.brand{font-size:10px}.site-head nav{justify-content:flex-start;overflow:auto}.site-head nav button{padding:7px 10px}.lang button{padding:6px 9px}main{width:calc(100% - 24px)}.hero{padding:38px 0}.hero h1{font-size:clamp(3.25rem,17vw,5rem)}.hero-sub{margin-top:18px;font-size:1.05rem}.metrics{grid-template-columns:1fr}.metrics div{min-height:0;padding:16px 0;border-right:0;border-bottom:1px solid var(--ink)}.metrics div:last-child{border-bottom:0}.hero-art{min-height:330px}.hero-art>strong{top:67px;font-size:3.5rem}.hero-art>img{width:62%;right:5%;bottom:7%;border-width:6px}.hero-art:after{right:17px;font-size:58px}.art-card{padding:8px 11px;font-size:12px}.card-a{left:19px;bottom:22px}.card-b{right:18px;bottom:56px}.top-findings{padding:52px 0}.top-findings header{display:block}.top-findings h2,.blueprint h2{font-size:2rem}.top-findings>div{display:block;border:0}.top-findings article{padding:24px 18px 24px 56px;border-left:1px solid var(--line)}.top-findings article>span{left:17px;top:25px}.blueprint{margin-bottom:55px}.blueprint header{display:block;padding:23px 20px}.blueprint header span{display:block;margin-top:8px}.blueprint>div{grid-template-columns:1fr}.blueprint>div button{border-right:0}.chapter{padding:24px 20px}.chapter h2{font-size:1.7rem}.lede{padding:15px 16px;font-size:1rem}.chapter>ol{padding:17px 15px 4px 39px}.ask{padding:24px 19px}.ask form{flex-direction:column}.collection{padding-top:46px}.collection>div{grid-template-columns:1fr}.mentor{right:8px;bottom:8px;width:calc(100vw - 16px);height:calc(100vh - 16px)}.mentor-open{right:10px;bottom:10px}}