:root{
  --brand:#0B75BE; --brand-dk:#075189; --brand-lt:#3E9BDC; --accent:#F6AD48; --accent-dk:#C8801A;
  --fg:#111519; --muted:#5a6674; --line:#e4e8ed; --bg:#fff; --panel:#f5f8fb; --panel2:#eaf1f8;
  --shadow:0 1px 3px rgba(16,32,48,.06),0 8px 24px rgba(16,32,48,.06);
  --shadow-lg:0 2px 6px rgba(16,32,48,.08),0 20px 48px rgba(16,32,48,.10);
}
@media (prefers-color-scheme:dark){
  :root{--brand:#4BA3E3; --brand-dk:#2B7FBE; --brand-lt:#7DC0F0; --accent:#F6AD48; --accent-dk:#F6AD48;
    --fg:#e9edf2; --muted:#95a1af; --line:#232a33; --bg:#0d1014; --panel:#141a21; --panel2:#1a222b;
    --shadow:0 1px 3px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.3);
    --shadow-lg:0 2px 6px rgba(0,0,0,.5),0 20px 48px rgba(0,0,0,.4)}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);
  font:16px/1.75 -apple-system,BlinkMacSystemFont,"Pretendard","Apple SD Gothic Neo","Malgun Gothic",system-ui,sans-serif;
  -webkit-text-size-adjust:100%;word-break:keep-all;overflow-x:hidden}
.wrap{max-width:47rem;margin:0 auto;padding:0 1.5rem}
a{color:var(--brand)}
img{max-width:100%;height:auto}

/* scroll progress */
#bar{position:fixed;top:0;left:0;height:3px;width:0;z-index:99;
  background:linear-gradient(90deg,var(--brand),var(--accent));transition:width .1s linear}

/* reveal — JS 없으면 처음부터 보임 */
.js .r{opacity:0;transform:translateY(22px);
  transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.js .r.in{opacity:1;transform:none}
.js .r.d1{transition-delay:.08s}
.js .r.d2{transition-delay:.16s}
.js .r.d3{transition-delay:.24s}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .r{opacity:1;transform:none;transition:none}
  #bar{display:none}
}

/* hero */
.hero{position:relative;overflow:hidden;color:#fff;text-align:center;padding:4.5rem 0 4rem;
  background:radial-gradient(1200px 500px at 15% -10%,#1E8FD8 0%,transparent 60%),
             radial-gradient(900px 420px at 90% 0%,#0B75BE 0%,transparent 55%),
             linear-gradient(168deg,#0B75BE 0%,#075189 100%)}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:70px;
  background:linear-gradient(to bottom,transparent,var(--bg))}
.hero .wrap{position:relative;z-index:1}
.hero img{width:92px;height:92px;margin-bottom:1.35rem;
  filter:brightness(0) invert(1) drop-shadow(0 6px 18px rgba(0,0,0,.28))}
.hero .org{font-size:.76rem;letter-spacing:.24em;opacity:.82;margin:0 0 .75rem;font-weight:600}
.hero h1{font-size:clamp(1.6rem,5.5vw,2.35rem);line-height:1.35;margin:0 0 1.15rem;
  font-weight:800;letter-spacing:-.025em;text-wrap:balance}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero .sub{font-size:1.02rem;margin:0 auto;max-width:31rem;opacity:.93;line-height:1.7}
.badge{display:inline-block;margin-top:1.9rem;padding:.55rem 1.2rem;
  border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.12);
  border-radius:999px;font-size:.86rem;font-weight:500}
.cue{margin-top:2.5rem;font-size:.72rem;letter-spacing:.2em;opacity:.7}
.cue span{display:block;width:1px;height:26px;margin:.6rem auto 0;background:rgba(255,255,255,.5);
  animation:cue 1.9s ease-in-out infinite}
@keyframes cue{0%,100%{transform:scaleY(.35);transform-origin:top;opacity:.35}
  50%{transform:scaleY(1);opacity:.9}}

/* sections */
section{padding:4rem 0;border-bottom:1px solid var(--line)}
section:last-of-type{border-bottom:0}
h2{font-size:clamp(1.3rem,3.6vw,1.65rem);line-height:1.45;margin:0 0 .75rem;
  letter-spacing:-.02em;text-wrap:balance}
h3{font-size:1.05rem;margin:2rem 0 .5rem}
.eyebrow{color:var(--accent-dk);font-size:.74rem;font-weight:800;letter-spacing:.18em;margin:0 0 .6rem}
p{margin:1rem 0}
ul{padding-left:1.15rem;margin:1rem 0}
li{margin:.5rem 0}
.answer{font-size:1.06rem;font-weight:600;line-height:1.7;background:var(--panel);
  border-left:4px solid var(--accent);border-radius:0 12px 12px 0;padding:1.25rem 1.4rem;margin:1.5rem 0}
.src{font-size:.81rem;color:var(--muted);margin:.75rem 0 0}

/* tables */
.scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:1.5rem 0}
table{border-collapse:separate;border-spacing:0;width:100%;font-size:.93rem;min-width:20rem;
  border:1px solid var(--line);border-radius:12px;overflow:hidden}
th,td{padding:.75rem .9rem;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
tbody tr:last-child td{border-bottom:0}
th{background:var(--panel2);font-weight:700;font-size:.86rem}
td.num{font-variant-numeric:tabular-nums;white-space:nowrap}
.hl{color:var(--brand);font-weight:700}

/* vs cards */
.vs{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin:1.75rem 0}
.vs>div{border:1px solid var(--line);border-radius:16px;padding:1.4rem 1.3rem;background:var(--bg)}
.vs .me{border:2px solid var(--brand);background:linear-gradient(170deg,var(--panel),var(--bg));
  box-shadow:var(--shadow)}
.vs h4{margin:0 0 .5rem;font-size:.8rem;letter-spacing:.12em;color:var(--muted);font-weight:700}
.vs .me h4{color:var(--brand)}
.big{font-size:2.6rem;font-weight:800;line-height:1;margin:.35rem 0 .5rem;
  font-variant-numeric:tabular-nums;letter-spacing:-.03em;color:var(--fg)}
.vs .me .big{color:var(--brand)}
.vs .cap{margin:0;font-size:.9rem;font-weight:600}
.vs ul{padding-left:1.05rem;margin:.85rem 0 0;font-size:.88rem;color:var(--muted)}
.vs li{margin:.35rem 0}

/* chart */
figure{margin:1.75rem 0;padding:1.25rem 1rem 1rem;border:1px solid var(--line);
  border-radius:16px;background:var(--panel);box-shadow:var(--shadow)}
figure svg{display:block;width:100%;height:auto}
figcaption{font-size:.83rem;color:var(--muted);margin-top:.85rem;text-align:center}
.lg{display:flex;gap:1.25rem;justify-content:center;font-size:.84rem;margin-bottom:.75rem;flex-wrap:wrap}
.lg i{display:inline-block;width:22px;height:3px;border-radius:2px;vertical-align:middle;margin-right:.4rem}
.js .spark{stroke-dasharray:600;stroke-dashoffset:600;
  transition:stroke-dashoffset 1.6s cubic-bezier(.3,.7,.3,1) .2s}
.js figure.in .spark{stroke-dashoffset:0}
@media (prefers-reduced-motion:reduce){.js .spark{stroke-dashoffset:0;transition:none}}

/* timeline */
.tl{position:relative;margin:1.75rem 0;padding-left:1.6rem}
.tl::before{content:"";position:absolute;left:5px;top:.6rem;bottom:.6rem;width:2px;
  background:linear-gradient(to bottom,var(--brand),var(--accent))}
.tl>div{position:relative;margin-bottom:1.6rem}
.tl>div:last-child{margin-bottom:0}
.tl>div::before{content:"";position:absolute;left:-1.6rem;top:.5rem;width:12px;height:12px;
  border-radius:50%;background:var(--bg);border:3px solid var(--brand)}
.tl>div:last-child::before{border-color:var(--accent)}
.tl b{display:block;font-size:1rem;margin-bottom:.15rem}
.tl span{color:var(--muted);font-size:.92rem}

/* cards */
.cards{display:grid;gap:.85rem;margin:1.75rem 0}
.cards.two{grid-template-columns:1fr 1fr}
.card{border:1px solid var(--line);border-radius:14px;padding:1.15rem 1.3rem;background:var(--bg);
  transition:transform .25s,box-shadow .25s,border-color .25s}
.card b{display:block;margin-bottom:.25rem;font-size:1rem}
.card span{color:var(--muted);font-size:.91rem;line-height:1.6}
.card .n{display:block;font-size:.72rem;font-weight:800;color:var(--accent-dk);
  letter-spacing:.1em;margin-bottom:.4rem}
a.card{text-decoration:none;color:inherit;display:block}
a.card:hover,.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--brand)}
a.card b{color:var(--brand)}

/* cta */
.cta{padding:4.5rem 0;text-align:center;
  background:radial-gradient(800px 300px at 50% 0%,var(--panel2),var(--bg))}
.cta h2{margin-bottom:.5rem}
.btn{display:inline-block;background:linear-gradient(135deg,var(--brand),var(--brand-dk));color:#fff;
  text-decoration:none;font-weight:700;padding:1rem 2.6rem;border-radius:999px;font-size:1.05rem;
  box-shadow:0 6px 20px rgba(11,117,190,.35);transition:transform .2s,box-shadow .2s;margin-top:1.75rem}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(11,117,190,.45)}

footer{background:var(--panel);color:var(--muted);font-size:.86rem;
  padding:2.5rem 0 3.5rem;border-top:1px solid var(--line)}
footer b{color:var(--fg)}
footer p{margin:.35rem 0}
.fine{margin-top:1.25rem;font-size:.81rem;line-height:1.65}

@media (max-width:560px){
  section{padding:3rem 0}
  .vs,.cards.two{grid-template-columns:1fr}
  .big{font-size:2.2rem}
}

/* ── 서브 문서 페이지(자료) 레이아웃 ────────────────────────── */
body > header, body > main{max-width:47rem;margin:0 auto;padding:0 1.5rem}
body > header{padding-top:2.75rem}
body > header h1{font-size:clamp(1.4rem,4.5vw,1.85rem);line-height:1.4;margin:.5rem 0 1rem;
  font-weight:800;letter-spacing:-.02em;text-wrap:balance}
.kicker{color:var(--muted);font-size:.85rem;margin:0}
.lede{font-size:1.05rem;font-weight:600;margin:0 0 1.5rem}
body > main > section{border-bottom:0;padding:0}
body > footer .wrap{max-width:47rem}

/* 안내 박스 */
.note{background:var(--panel);border-radius:12px;padding:1rem 1.2rem;
  font-size:.89rem;color:var(--muted);margin:1.5rem 0;line-height:1.7}
.draft{border:2px dashed var(--accent-dk);color:var(--accent-dk);border-radius:12px;
  padding:.95rem 1.15rem;margin:1.5rem 0;font-size:.9rem;font-weight:600;line-height:1.65}
.todo{color:var(--accent-dk);font-weight:700}
@media (prefers-color-scheme:dark){
  .draft{border-color:#F6AD48;color:#F6AD48}
  .todo{color:#F6AD48}
}