:root{
  --font-sans:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,system-ui,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;
  --font-read:"Pretendard Variable",Pretendard,"Apple SD Gothic Neo","Malgun Gothic",serif;
  --bg:#f7f6f3; --bg-elev:#ffffff; --text:#1c1917; --text-2:#57534e; --text-3:#a8a29e;
  --border:#e7e5e4; --accent:#7c5e3b; --accent-soft:#f2ece2; --accent-text:#6b4f2e;
  --radius:14px; --shadow:0 1px 3px rgba(0,0,0,.06); --shadow-lg:0 14px 40px rgba(0,0,0,.10);
}
@media (prefers-color-scheme:dark){:root{
  --bg:#14130f; --bg-elev:#1c1a16; --text:#ece9e3; --text-2:#a8a29e; --text-3:#6b6b63;
  --border:#2a2823; --accent:#c9a875; --accent-soft:#241f18; --accent-text:#d8bd93;
  --shadow:0 1px 3px rgba(0,0,0,.3); --shadow-lg:0 14px 40px rgba(0,0,0,.5);}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);
  -webkit-font-smoothing:antialiased;line-height:1.6}
.wrap{max-width:720px;margin:0 auto;padding:0 22px}
.topbar{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:54px;max-width:720px}
.back{color:var(--text-2);text-decoration:none;font-size:.92rem;font-weight:600}
.back:hover{color:var(--accent-text)}
.brand{font-weight:800;letter-spacing:.02em;color:var(--text-2)}
/* index */
.hero{text-align:center;padding:26px 22px 8px}
.hero .cover{max-width:600px;margin:4px auto 26px;border-radius:16px;overflow:hidden;aspect-ratio:16/10;box-shadow:var(--shadow-lg);border:1px solid var(--border)}
.hero .cover img{width:100%;height:100%;object-fit:cover;display:block}
.mark{font-size:60px;line-height:1;font-weight:900;color:var(--accent);
  filter:drop-shadow(0 6px 16px rgba(124,94,59,.28))}
.eyebrow{margin:20px 0 6px;color:var(--accent-text);font-weight:800;font-size:.76rem;letter-spacing:.16em;text-transform:uppercase}
.hero h1{margin:.1em 0;font-size:clamp(2.2rem,7vw,3.2rem);font-weight:900;letter-spacing:.02em}
.hero .sub{color:var(--text-3);font-weight:700;letter-spacing:.03em;margin:.2em 0 0}
.hero .intro{max-width:560px;margin:20px auto 0;color:var(--text-2);font-size:1.02rem;line-height:1.85}
.sec-label{display:flex;align-items:center;margin:44px 0 14px;font-weight:800;font-size:.9rem;color:var(--text-2)}
.sec-label .dim{color:var(--text-3);font-weight:600}
.toc{display:flex;flex-direction:column;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--bg-elev)}
.toc-row{display:flex;align-items:center;gap:14px;padding:15px 18px;text-decoration:none;color:inherit;border-bottom:1px solid var(--border);transition:background .12s}
.toc-row:last-child{border-bottom:0}
.toc-row:hover{background:var(--accent-soft)}
.toc-num{font-weight:800;color:var(--accent-text);font-variant-numeric:tabular-nums;min-width:26px}
.toc-title{flex:1;font-weight:600}
.toc-go{color:var(--text-3);font-size:.85rem;font-weight:700}
.note{margin:22px 2px 0;color:var(--text-3);font-size:.9rem;line-height:1.7}
.preview{margin:18px 0 4px;border:1px dashed var(--border);border-radius:12px;padding:14px 16px;text-align:center;color:var(--accent-text);font-weight:700;background:var(--accent-soft)}
footer{padding:36px 22px 60px;text-align:center;color:var(--text-3);font-size:.82rem}
/* reader */
.reader{padding:40px 22px 8px}
.ch-eyebrow{color:var(--accent-text);font-weight:800;font-size:.8rem;letter-spacing:.1em}
.ch-title{font-size:clamp(1.7rem,5vw,2.3rem);font-weight:900;letter-spacing:.01em;margin:.3em 0 1.1em}
.ch-body{font-family:var(--font-read);font-size:1.12rem;line-height:2.0;letter-spacing:.01em}
.ch-body p{margin:0 0 1.35em;text-align:left;word-break:keep-all}
.ch-nav{display:flex;gap:10px;justify-content:space-between;align-items:center;margin:36px 0 8px}
.nav-btn{flex:1;text-align:center;padding:13px 12px;border:1px solid var(--border);border-radius:12px;
  background:var(--bg-elev);color:var(--text);text-decoration:none;font-weight:700;font-size:.95rem;transition:.12s}
.nav-btn:hover{border-color:var(--accent);color:var(--accent-text)}
.nav-btn.ghost{flex:0 0 auto;color:var(--text-3);font-weight:600}
.nav-btn.disabled{color:var(--text-3);opacity:.5;pointer-events:none}
/* comments */
.comments{padding:8px 22px 20px}
.c-h{font-size:1.15rem;font-weight:800;margin:28px 0 6px}
.c-notice{margin:0 0 14px;font-size:.82rem;color:var(--accent-text);background:var(--accent-soft);
  padding:9px 12px;border-radius:10px}
.c-form{display:flex;flex-direction:column;gap:8px;margin-bottom:22px}
.c-name{padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:var(--bg-elev);color:var(--text);font-family:inherit;max-width:220px}
.c-body{padding:12px;border:1px solid var(--border);border-radius:10px;background:var(--bg-elev);color:var(--text);font-family:inherit;min-height:88px;resize:vertical;line-height:1.6}
.c-submit{align-self:flex-end;padding:10px 22px;border:0;border-radius:10px;background:var(--accent);color:#fff;font-weight:800;cursor:pointer}
.c-submit:hover{filter:brightness(1.06)}
.c-list{display:flex;flex-direction:column;gap:12px}
.citem{border:1px solid var(--border);border-radius:12px;padding:13px 15px;background:var(--bg-elev)}
.chead{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:5px}
.chead b{font-weight:800}
.chead span{color:var(--text-3);font-size:.78rem;font-variant-numeric:tabular-nums}
.cbody{color:var(--text);line-height:1.7;word-break:break-word}
.cempty{color:var(--text-3);font-size:.92rem;padding:6px 2px}

/* 해양 SF 톤 오버라이드 */
:root{--accent:#0e7490;--accent-soft:#e6f2f4;--accent-text:#0e6b80;}
@media (prefers-color-scheme:dark){:root{--accent:#38bdf8;--accent-soft:#0c2430;--accent-text:#7dd3fc;
  --bg:#0b1220;--bg-elev:#111a2b;--text:#e6edf5;--text-2:#9fb0c3;--text-3:#5b6b80;--border:#1e2a3d;}}
.hero .mark{color:var(--accent);filter:drop-shadow(0 6px 18px rgba(14,116,144,.30));font-size:64px}
.part-label{margin:26px 4px 8px;font-weight:800;color:var(--accent-text);font-size:.95rem;letter-spacing:.02em}
.part-label:first-child{margin-top:6px}
.part-label .pn{display:inline-block;background:var(--accent-soft);color:var(--accent-text);
  border-radius:8px;padding:2px 9px;margin-right:8px;font-size:.85rem}
.toc-row.ins{background:var(--accent-soft)}
.toc-row.ins .toc-num{color:var(--accent)}
.toc-row.ins .toc-title{font-style:italic;color:var(--accent-text)}
.reader.ins-page .ch-body{font-style:italic}
.reader.ins-page .ch-eyebrow{color:var(--accent)}