:root{
  --bg:#1a140d; --card:#241a10; --fg:#f7efe3; --muted:#c3b299;
  --accent:#F28320; --border:#3d2e1c; --quote:#D95F00; --danger:#d64545;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);
  font-family:"Noto Sans KR","Apple SD Gothic Neo","Malgun Gothic",system-ui,-apple-system,sans-serif;
  line-height:1.75;font-size:17px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:820px;margin:0 auto;padding:24px 20px 96px}

/* 헤더 */
.topbar{position:sticky;top:0;z-index:20;background:#1a140dee;backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border)}
.topbar .inner{max-width:820px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;gap:14px}
.brand{font-weight:800;font-size:18px;color:var(--fg)}
.brand small{display:block;font-weight:500;color:var(--accent);font-size:12px;letter-spacing:.04em}
.nav{margin-left:auto;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.nav a,.nav button{font-size:14px}

/* 버튼 */
.btn{display:inline-block;border:1px solid var(--border);background:var(--card);color:var(--fg);
  padding:8px 14px;border-radius:8px;cursor:pointer;font-size:15px;font-family:inherit}
.btn:hover{border-color:var(--accent)}
.btn.primary{background:var(--accent);color:#06101f;border-color:var(--accent);font-weight:700}
.btn.danger{color:var(--danger);border-color:#5a2a2a}
.btn.ghost{background:transparent}
.btn-sm{padding:5px 10px;font-size:13px}

/* 카드/목록 */
.hero{background:linear-gradient(135deg,#D95F0022,#F2832011);border-bottom:1px solid var(--border);
  padding:44px 20px;text-align:center}
.hero h1{margin:8px auto;max-width:720px;font-size:28px;line-height:1.3}
.hero p{color:var(--muted);margin:0}
.post-card{display:block;border:1px solid var(--border);background:var(--card);border-radius:12px;
  padding:18px 20px;margin:16px 0;transition:border-color .15s}
.post-card:hover{border-color:var(--accent);text-decoration:none}
.post-card h3{margin:0 0 6px;font-size:20px;color:var(--fg)}
.post-card .summary{color:var(--muted);margin:0 0 8px}
.meta{color:var(--muted);font-size:13px}
.badge{display:inline-block;font-size:12px;padding:2px 8px;border-radius:999px;border:1px solid var(--border);margin-left:6px}
.badge.draft{color:#d29922;border-color:#5c4813}

/* 매원고등학교 강의자료 */
.lesson-materials{margin:24px 0;padding:28px;border:1px solid var(--accent);
  border-radius:16px;background:linear-gradient(120deg,#F283201c,var(--card))}
.lesson-materials-label{margin:0 0 8px;color:var(--accent);font-size:14px;font-weight:700}
.lesson-materials h2{margin:0;font-size:30px;line-height:1.4;word-break:keep-all;overflow-wrap:anywhere}
.lesson-materials-description{margin:12px 0 20px;color:var(--muted);word-break:keep-all}
.lesson-materials-link{padding:12px 18px;font-size:17px;text-align:center}
.lesson-materials-link:hover{text-decoration:none;filter:brightness(1.08)}
.lesson-materials-link:focus-visible{outline:3px solid var(--fg);outline-offset:4px}
.lesson-terminal{margin-top:26px;padding-top:22px;border-top:1px solid var(--border);min-width:0}
.lesson-terminal-header{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.lesson-terminal h3{margin:0;font-size:21px;line-height:1.4}
.lesson-terminal-help{margin:12px 0;color:var(--muted);font-size:15px;word-break:keep-all}
.lesson-terminal-code{margin:16px 0;padding:18px;background:var(--bg);border:1px solid var(--border);
  border-radius:10px;overflow-x:auto;max-width:100%;font-size:14px;line-height:1.8;tab-size:2}
.lesson-terminal-code code{font-family:"SFMono-Regular",Consolas,monospace}
.lesson-terminal-code:focus-visible,#lesson-copy-bash:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.lesson-copy-status{min-height:1.75em;margin:12px 0 0;font-size:14px;color:var(--accent)}
.lesson-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:520px){
  .lesson-materials{padding:22px 18px}
  .lesson-materials h2{font-size:25px}
  .lesson-materials-link{display:block;width:100%;font-size:16px}
}

/* 글 본문 */
article h1,article h2,article h3{line-height:1.3}
article h2{margin-top:40px;padding-bottom:8px;border-bottom:1px solid var(--border)}
article img{max-width:100%}
article pre{background:#241a10;border:1px solid var(--border);border-radius:10px;padding:16px;overflow-x:auto}
article code{background:#262c36;padding:2px 6px;border-radius:5px;font-size:.9em}
article pre code{background:none;padding:0}
article table{border-collapse:collapse;width:100%;display:block;overflow-x:auto;font-size:15px}
article th,article td{border:1px solid var(--border);padding:8px 12px}
article th{background:#2a1e12}
article blockquote{margin:20px 0;padding:2px 18px;border-left:4px solid var(--quote);background:#D95F0014;border-radius:0 8px 8px 0}
.yt-embed{position:relative;padding-bottom:56.25%;height:0;overflow:hidden;border-radius:12px;border:1px solid var(--border);margin:20px 0}
.yt-embed iframe{position:absolute;inset:0;width:100%;height:100%}

/* 폼/에디터 */
.field{margin:14px 0}
.field label{display:block;margin-bottom:6px;color:var(--muted);font-size:14px}
input[type=text],input[type=password],textarea{width:100%;background:#1a140d;border:1px solid var(--border);
  color:var(--fg);border-radius:8px;padding:10px 12px;font-size:15px;font-family:inherit}
textarea{min-height:360px;resize:vertical;line-height:1.6;font-family:"SFMono-Regular",Consolas,monospace}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}

/* 댓글 */
.comment{border:1px solid var(--border);border-radius:10px;padding:12px 14px;margin:10px 0;background:var(--card)}
.comment .c-head{display:flex;gap:8px;align-items:center;font-size:13px;color:var(--muted);margin-bottom:4px}
.comment .c-author{color:var(--fg);font-weight:600}

/* 모달 */
.modal-bg{position:fixed;inset:0;background:#000a;display:none;align-items:center;justify-content:center;z-index:50;padding:20px}
.modal-bg.show{display:flex}
.modal{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:24px;max-width:420px;width:100%}
.modal h3{margin-top:0}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#2a1e12;border:1px solid var(--border);
  padding:12px 20px;border-radius:10px;z-index:60;opacity:0;transition:opacity .2s;pointer-events:none}
.toast.show{opacity:1}
footer{text-align:center;color:var(--muted);font-size:14px;margin:48px 0 24px}
.hidden{display:none !important}
.muted{color:var(--muted)}

/* ═══ 2026-10-27 가독성 개선: 밝은 종이 테마 · 본문 폭/줄 간격 · 코드 블록 따로 ═══ */
:root{--bg:#faf7f2;--card:#ffffff;--fg:#1f1a14;--muted:#6b5d4d;--accent:#b84f00;--border:#e7ddcf;--quote:#d95f00;--danger:#b3261e;
  --code-bg:#1e2230;--code-fg:#e6e9f2;--code-head:#2a2f40;--inline-bg:#f3ebe0;--inline-fg:#8a3b00}
body{background:var(--bg);color:var(--fg);font-size:17.5px;line-height:1.85;word-break:keep-all;overflow-wrap:break-word;-webkit-font-smoothing:antialiased}
a{color:var(--accent)}
.wrap{max-width:780px}
.topbar{background:#faf7f2ee;border-bottom:1px solid var(--border)}
.brand{color:var(--fg)}.brand small{color:var(--accent)}
.btn{background:#fff;color:var(--fg)}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.danger{border-color:#f0c7c3}
.hero{background:linear-gradient(135deg,#fff1e2,#faf7f2);border:1px solid var(--border);border-radius:16px}
.hero p{color:var(--muted)}
.post-card{background:#fff;box-shadow:0 1px 2px rgba(60,40,10,.05)}
.post-card:hover{box-shadow:0 4px 14px rgba(60,40,10,.08)}
.post-card h3{color:var(--fg);line-height:1.45}
.lesson-materials{background:linear-gradient(120deg,#fff3e6,#fff);border-color:#efc79f}
.lesson-terminal-code{background:var(--code-bg);color:var(--code-fg);border-color:#2a2f40}
input[type=text],input[type=password],textarea{background:#fff;color:var(--fg)}
.comment{background:#fff}
.modal{background:#fff}.modal-bg{background:#0006}
.toast{background:#2b2418;color:#fff;border-color:#2b2418}
/* 본문 */
article{font-size:17.5px}
article>p,article li{color:#2a241c}
article p{margin:0 0 1.15em}
article h1{font-size:30px;line-height:1.35;margin:.2em 0 .4em}
article h2{font-size:23px;margin:2.2em 0 .7em;padding-bottom:8px;border-bottom:2px solid var(--border)}
article h3{font-size:19px;margin:1.8em 0 .5em}
article ul,article ol{padding-left:1.4em;margin:0 0 1.2em}article li{margin:.3em 0}
article strong{color:#14100b}
article blockquote{background:#fff5ea;color:#4a3b2a}
article th{background:#f5eee4}article td,article th{border-color:var(--border)}
article img{border-radius:10px}
article hr{border:none;border-top:1px solid var(--border);margin:2.5em 0}
/* 줄 안 코드 */
article :not(pre)>code{background:var(--inline-bg);color:var(--inline-fg);padding:.12em .42em;border-radius:5px;font-size:.88em;font-family:"JetBrains Mono","D2Coding","SFMono-Regular",Consolas,monospace;word-break:break-all}
/* 코드 블록: 어두운 칸 + 위쪽 막대(언어·복사) */
.code-block{margin:1.5em 0;border-radius:12px;overflow:hidden;background:var(--code-bg);box-shadow:0 2px 10px rgba(20,24,40,.18)}
.code-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:6px 8px 6px 14px;background:var(--code-head);color:#aab2c8;font:600 12.5px/1.4 "Noto Sans KR",system-ui,sans-serif}
.code-head .dots{display:inline-flex;gap:5px;margin-right:8px}.code-head .dots i{width:9px;height:9px;border-radius:50%;background:#ff5f57}.code-head .dots i:nth-child(2){background:#febc2e}.code-head .dots i:nth-child(3){background:#28c840}
.code-lang{display:inline-flex;align-items:center;letter-spacing:.03em;text-transform:lowercase}
.code-copy{border:1px solid #454d66;background:#323a50;color:#e6e9f2;border-radius:7px;padding:4px 10px;font:600 12.5px/1 "Noto Sans KR",system-ui,sans-serif;cursor:pointer}
.code-copy:hover{background:#3e4762}.code-copy.done{background:#1f6f43;border-color:#2a8a55}
.code-copy:focus-visible{outline:2px solid #ffb36b;outline-offset:2px}
article .code-block pre{margin:0;border:0;border-radius:0;background:var(--code-bg);color:var(--code-fg);padding:14px 16px 16px;font-size:14.5px;line-height:1.7;tab-size:4;overflow-x:auto}
article .code-block pre code{background:none;color:inherit;padding:0;font-family:"JetBrains Mono","D2Coding","SFMono-Regular",Consolas,monospace;font-size:inherit;word-break:normal;white-space:pre}
/* 간단 색칠(파이썬·셸): 주석·문자열·키워드·숫자 */
.tk-c{color:#7f8aa6;font-style:italic}.tk-s{color:#a5e075}.tk-k{color:#c792ea}.tk-n{color:#f78c6c}.tk-f{color:#82aaff}
@media(max-width:520px){body,article{font-size:16.5px}article h1{font-size:25px}article h2{font-size:21px}article .code-block pre{font-size:13px}}
/* 2026-10-28 고정 글 카드(공지 상자 대신) */
.pinned-post{display:block;margin:20px 0;padding:16px 20px;border:1px solid #efc79f;border-left:5px solid var(--accent);border-radius:12px;background:#fff;color:var(--fg);text-decoration:none!important;box-shadow:0 1px 2px rgba(60,40,10,.05)}
.pinned-post:hover{box-shadow:0 4px 14px rgba(60,40,10,.1)}
.pinned-label{display:inline-block;font-size:12.5px;font-weight:700;color:var(--accent);margin-bottom:4px}
.pinned-post b{display:block;font-size:18px;line-height:1.45}
.pinned-desc{display:block;color:var(--muted);font-size:15px;margin-top:4px}
/* 2026-10-28 누르기 쉽게: 위 메뉴·아래 링크·복사 버튼 */
.nav a,.nav button{display:inline-flex;align-items:center;min-height:36px;padding:0 8px}
footer a{display:inline-block;padding:8px 4px}
.code-copy{min-height:30px;padding:6px 12px}
/* 2026-10-31 목록 카드 제목을 h2로(h1 다음 소제목 순서), 글 끝 글쓴이 상자 */
.post-card h2{margin:0 0 6px;font-size:20px;color:var(--fg);line-height:1.45}
.hero .hero-kicker{color:var(--accent);font-weight:600;font-size:14px}
.author-box{margin:40px 0 0;padding:16px 18px;border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:12px;background:#fff;font-size:15.5px;line-height:1.7;color:#2a241c}
.author-box p{margin:0 0 4px}
.author-links a{display:inline-block;padding:6px 2px}
footer{line-height:1.6;padding:0 12px}
@media(max-width:520px){article table{font-size:14px}article th,article td{padding:6px 8px}}