/* ============================================================
   레이아웃 — 전체 골격
   · body / 사이드바(.side) / 메인(.main) / 상단바(.top)
   · 화면 전환 컨테이너(.screen) / 카드(.card)
   ============================================================ */
*{box-sizing:border-box}
body{margin:0;background:var(--ground);color:var(--ink);font-family:"Pretendard Variable",Pretendard,"Apple SD Gothic Neo","Malgun Gothic","Segoe UI",sans-serif;font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;}
.app{display:flex;min-height:100vh}
.side{width:200px;flex:0 0 200px;background:var(--nav);border-right:1px solid var(--nav-bd);color:var(--nav-ink);padding:14px 10px;display:flex;flex-direction:column;gap:2px;position:sticky;top:0;height:100vh}
.brand{display:flex;align-items:center;gap:9px;padding:6px 10px 16px}
.brand .mark{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--accent),var(--accent-deep));display:grid;place-items:center;color:#fff;font-weight:800;font-size:13px}
.brand b{color:var(--nav-active);font-size:14px;display:block;line-height:1.2}
.brand small{font-size:10.5px;color:var(--nav-ink);letter-spacing:.4px}
.nav-label{font-size:10px;letter-spacing:.14em;padding:10px 12px 4px;color:color-mix(in srgb,var(--nav-ink) 70%,transparent)}
.nav{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:8px;cursor:pointer;font-size:13.5px;border:0;background:transparent;color:var(--nav-ink);width:100%;text-align:left;font-family:inherit}
.nav:hover{background:var(--nav-hi);color:var(--nav-active)}
.nav.on{background:var(--nav-on);color:var(--nav-active);font-weight:700;box-shadow:inset 2px 0 0 var(--accent)}
.side .foot{margin-top:auto;padding:10px 12px;font-size:11px;color:color-mix(in srgb,var(--nav-ink) 75%,transparent);border-top:1px solid var(--nav-bd)}
.main{flex:1;min-width:0;display:flex;flex-direction:column}
.top{display:flex;align-items:center;gap:10px;padding:12px 24px;background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}
.top h1{font-size:16.5px;margin:0}
.top .sp{flex:1}
.pill-date{display:flex;align-items:center;gap:7px;background:var(--surface2);border:1px solid var(--line);border-radius:8px;padding:6px 11px;font-size:12.5px;color:var(--ink2);font-variant-numeric:tabular-nums}
.pill-date b{color:var(--ink)}
.content{padding:20px 24px 48px;display:flex;flex-direction:column;gap:16px}
.screen{display:none;flex-direction:column;gap:16px}
.screen.on{display:flex}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.card .hd{display:flex;align-items:center;gap:10px;padding:13px 16px;border-bottom:1px solid var(--line2);flex-wrap:wrap}
.card .hd h3{margin:0;font-size:13.5px}
.card .hd .sub{color:var(--muted);font-size:11.5px}
.card .hd .sp{flex:1}
.card .bd{padding:14px 16px}