/* 다섯 가지 원리 상세 페이지 공용 스타일 */
:root{
  --blue:#0064A0; --teal:#008C8C; --gold:#B48C50; --navy:#03243A; --night:#021520;
  --paper:#FFFFFF; --tint:#F1F7FB; --card:#FFFFFF; --ink:#10202B; --muted:#5B6B76; --line:#DCE6EC;
  --gold-soft:#FBF5E9; --blue-soft:#E6F2FA;
  --body:"Pretendard Variable",Pretendard,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;
}
@media (prefers-color-scheme:dark){
  :root{--paper:#071A26;--tint:#0B2433;--card:#0E2A3B;--ink:#EAF2F6;--muted:#9DB2BF;--line:#1D3C4F;--gold-soft:#2A2314;--blue-soft:#0D3149}
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{font-family:var(--body);color:var(--ink);background:var(--paper);line-height:1.75;word-break:keep-all;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px;border-radius:8px}
.wrap{width:min(940px,100% - 40px);margin-inline:auto}

/* 위쪽 띠 */
.top{position:fixed;top:14px;left:50%;transform:translateX(-50%);z-index:50;width:min(1100px,100% - 24px);display:flex;align-items:center;gap:10px;padding:8px 10px 8px 18px;border-radius:999px;
  background:rgba(255,255,255,.78);border:1px solid rgba(255,255,255,.6);backdrop-filter:blur(20px) saturate(1.5);-webkit-backdrop-filter:blur(20px) saturate(1.5);box-shadow:0 10px 40px -14px rgba(2,21,32,.4)}
.top img{height:32px;display:block}
.top nav{margin-left:auto;display:flex;gap:2px}
.top nav a{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:14px;color:#10202B;font-variant-numeric:tabular-nums;transition:background .2s,color .2s}
.top nav a:hover{background:rgba(0,100,160,.12);color:var(--blue)}
.top nav a[aria-current]{background:var(--blue);color:#fff}
.top .home{padding:10px 18px;border-radius:999px;background:var(--navy);color:#fff;font-weight:700;font-size:14.5px;white-space:nowrap}
.top .home:hover{background:var(--blue)}
@media (max-width:560px){.top .home span{display:none}.top nav a{width:34px;height:34px}.top img{height:26px}}

/* 머리 */
.p-hero{position:relative;padding:150px 0 76px;color:#fff;overflow:hidden;
  background:radial-gradient(800px 500px at 88% 0,rgba(0,140,140,.55),transparent 62%),radial-gradient(700px 600px at 0 100%,rgba(0,100,160,.7),transparent 60%),linear-gradient(160deg,var(--navy),var(--night))}
.p-hero .big{position:absolute;right:-10px;bottom:-70px;font-size:clamp(200px,34vw,420px);font-weight:800;line-height:1;letter-spacing:-.06em;color:rgba(255,255,255,.07);font-variant-numeric:tabular-nums;pointer-events:none}
.p-hero .wrap{position:relative}
.crumb{font-size:14px;font-weight:700;letter-spacing:.14em;color:#7FD6D0}
.p-hero h1{margin:14px 0 16px;font-size:clamp(38px,6.4vw,76px);font-weight:800;line-height:1.2;letter-spacing:-.03em}
.p-hero .one{font-size:clamp(18px,2.2vw,24px);font-weight:700;color:#E3C590}
.p-hero .lede{margin-top:14px;max-width:640px;font-size:clamp(16px,1.7vw,18.5px);color:rgba(255,255,255,.82)}

/* 본문 */
main section{padding:clamp(46px,7vw,84px) 0;border-bottom:1px solid var(--line)}
main section:last-of-type{border-bottom:0}
main section.tint{background:var(--tint)}
.k{font-size:13.5px;font-weight:700;letter-spacing:.2em;color:var(--teal);text-transform:uppercase}
h2{margin:10px 0 16px;font-size:clamp(26px,3.4vw,40px);font-weight:800;line-height:1.35;letter-spacing:-.025em}
h3{font-size:20px;font-weight:800;letter-spacing:-.02em;line-height:1.45}
main p{font-size:17px;color:var(--muted)}
main p+p{margin-top:12px}
main p strong,li strong{color:var(--ink)}
.lead{font-size:18.5px;color:var(--ink)}

.grid{margin-top:26px;display:grid;gap:14px}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}
@media (max-width:760px){.g2,.g3{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:26px 24px}
.card h3{margin-bottom:8px}
.card p{font-size:16px}
.card .tag{display:inline-block;margin-bottom:10px;padding:3px 12px;border-radius:999px;font-size:13px;font-weight:700;background:var(--blue-soft);color:var(--blue)}
.card.dark{background:var(--navy);border-color:var(--navy);color:#fff}
.card.dark p{color:rgba(255,255,255,.8)}
.card ul{margin-top:10px;padding-left:18px;color:var(--muted);font-size:16px}
.card li+li{margin-top:5px}

.box{margin-top:26px;padding:24px 26px;border-radius:0 20px 20px 0;border-left:4px solid var(--gold);background:var(--gold-soft)}
.box b{color:var(--gold)}
.box p{color:var(--ink)}
.quote{margin-top:26px;padding:30px;border-radius:24px;background:var(--navy);color:#fff;font-size:clamp(18px,2vw,22px);font-weight:600;line-height:1.75}
.quote em{font-style:normal;color:#E3C590}
.quote small{display:block;margin-top:12px;font-size:14px;font-weight:500;color:rgba(255,255,255,.6)}

.chips{margin-top:10px;display:flex;flex-wrap:wrap;gap:6px}
.chips span{padding:4px 12px;border-radius:999px;font-size:14px;font-weight:700;background:rgba(255,255,255,.16)}
.chips.soft span{background:var(--tint);color:var(--ink);border:1px solid var(--line)}

/* 수준 카드 */
.lv{margin-top:16px;border-radius:24px;padding:28px 26px;color:#fff;position:relative;overflow:hidden}
.lv::after{content:attr(data-n);position:absolute;right:6px;bottom:-40px;font-size:170px;font-weight:800;line-height:1;color:rgba(255,255,255,.1);pointer-events:none}
.lv>*{position:relative;z-index:1}
.lv.l1{background:linear-gradient(165deg,#86AEC8,#4F7F9E)}.lv.l2{background:linear-gradient(165deg,#14AFAA,#00706F)}
.lv.l3{background:linear-gradient(165deg,#1B86C8,#004E80)}.lv.l4{background:linear-gradient(165deg,#0F4A72,#031F33)}
.lv .no{font-size:13px;font-weight:700;letter-spacing:.2em;opacity:.85}
.lv h3{font-size:clamp(24px,2.8vw,32px);margin:4px 0 2px}
.lv .en{font-size:15px;opacity:.8}
.lv p{margin-top:12px;color:rgba(255,255,255,.94);font-size:16.5px;max-width:720px}
.lv h4{margin-top:18px;font-size:13px;letter-spacing:.14em;opacity:.8}
.lv ol{margin-top:8px;padding-left:20px;font-size:16px;max-width:720px}
.lv li+li{margin-top:4px}
.lv .star{display:inline-block;margin-top:14px;padding:6px 14px;border-radius:999px;background:#E3C590;color:#1b1305;font-size:13.5px;font-weight:800}

/* 표 */
.tbl{margin-top:24px;width:100%;border-collapse:collapse;font-size:16px;border-top:2px solid var(--ink)}
.tbl th,.tbl td{padding:15px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.tbl th{font-size:14px;color:var(--muted);font-weight:700;white-space:nowrap}
.tbl td:first-child{font-weight:800;white-space:nowrap}
.tbl td{color:var(--muted)}
.tbl td:first-child,.tbl td strong{color:var(--ink)}
.scroll{overflow-x:auto}
@media (max-width:640px){.tbl td:first-child,.tbl th{white-space:normal}}

/* 순서 흐름 */
.steps{margin-top:26px;display:grid;gap:12px;counter-reset:s}
.steps>div{counter-increment:s;display:grid;grid-template-columns:54px 1fr;gap:16px;align-items:start;padding:22px 24px;border-radius:22px;background:var(--card);border:1px solid var(--line);position:relative}
.steps>div::before{content:counter(s);width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:var(--blue);color:#fff;font-weight:800;font-size:20px}
.steps>div:not(:last-child)::after{content:"";position:absolute;left:46px;top:100%;width:2px;height:12px;background:var(--blue)}
.steps h3 small{margin-left:8px;font-size:14px;font-weight:600;color:var(--muted)}
.steps p{font-size:16px;margin-top:4px}

/* 수준 막대 (분야별 무게중심) */
.bar{margin:14px 0 12px;display:grid;grid-template-columns:repeat(4,1fr);gap:5px}
.bar i{font-style:normal;text-align:center;padding:8px 2px;border-radius:10px;font-size:13px;font-weight:700;background:var(--tint);color:var(--muted);border:1px solid var(--line)}
.bar i.on{background:var(--blue);border-color:var(--blue);color:#fff}
.bar i.main{background:var(--navy);border-color:var(--navy);color:#E3C590}

/* 앞·뒤 원리 */
.pn{display:grid;grid-template-columns:1fr 1fr;gap:14px;padding:clamp(40px,6vw,70px) 0}
.pn a{padding:24px 26px;border-radius:22px;border:1px solid var(--line);background:var(--card);transition:transform .25s,border-color .25s,box-shadow .25s}
.pn a:hover{transform:translateY(-4px);border-color:var(--blue);box-shadow:0 22px 40px -26px rgba(0,100,160,.6)}
.pn small{display:block;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--teal)}
.pn b{font-size:20px;font-weight:800}
.pn a.next{text-align:right}
@media (max-width:560px){.pn{grid-template-columns:1fr}.pn a.next{text-align:left}}
footer{background:var(--night);color:rgba(255,255,255,.6);padding:34px 0;font-size:14.5px}
footer strong{color:#fff}
footer .src{margin-top:6px}
@media (prefers-reduced-motion:reduce){*{transition:none!important}html{scroll-behavior:auto}}