/* ============================================================
   담PD 클로드 가이드 아카이브 — Notion-inspired stylesheet
   ============================================================ */
:root{
  --bg:#ffffff;
  --bg-soft:#f7f7f5;
  --sidebar:#fbfbfa;
  --text:#37352f;
  --text-strong:#191919;
  --muted:#6f6e69;
  --faint:#9b9a97;
  --line:#e9e9e6;
  --line-strong:#deddd9;
  --accent:#2383e2;
  --accent-dark:#1a73d1;
  --accent-soft:#e7f1fb;
  --code-bg:#f7f6f3;
  --code-head:#efeeea;
  --callout:#f1f6fd;
  --shadow:0 1px 2px rgba(15,15,15,.06),0 4px 14px rgba(15,15,15,.06);
  --radius:6px;
  --sidebar-w:300px;
  --topbar-h:56px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic",Roboto,sans-serif;
  color:var(--text);
  background:var(--bg);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  word-break:keep-all;
}
::selection{background:#bde0fe}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
a{color:var(--accent-dark);text-decoration:none}
a:hover{text-decoration:underline}
code{font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;font-size:.86em;background:var(--code-bg);border:1px solid var(--line);border-radius:4px;padding:.12em .38em;color:#eb5757;white-space:nowrap}
img{max-width:100%}
button{font-family:inherit;cursor:pointer}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ============ Top bar (post pages) ============ */
.topbar{
  position:fixed;top:0;left:var(--sidebar-w);right:0;height:var(--topbar-h);
  display:flex;align-items:center;gap:10px;padding:0 22px;
  background:rgba(255,255,255,.85);backdrop-filter:saturate(1.2) blur(10px);-webkit-backdrop-filter:saturate(1.2) blur(10px);
  border-bottom:1px solid var(--line);z-index:40;
}
.progress{position:absolute;top:0;left:0;height:2px;width:0;background:var(--accent);transition:width .12s linear}
.hamburger{display:none;align-items:center;justify-content:center;width:38px;height:38px;border:1px solid var(--line);background:var(--bg);border-radius:var(--radius);color:var(--text)}
.hamburger svg{width:18px;height:18px}
.crumb{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--text-strong);text-decoration:none}
.crumb b{color:var(--text-strong);font-weight:600}
.topbar-spacer{flex:1}
.tb-btn{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600;color:var(--text);
  border:1px solid var(--line);background:var(--bg);border-radius:var(--radius);padding:8px 12px;line-height:1;transition:border-color .15s,background .15s}
.tb-btn:hover{border-color:var(--line-strong);background:var(--bg-soft);text-decoration:none}
.tb-btn svg{width:15px;height:15px;stroke:var(--muted)}

/* ============ Sidebar ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);z-index:50;
  background:var(--sidebar);border-right:1px solid var(--line);
  display:flex;flex-direction:column;
}
.side-head{display:flex;align-items:center;gap:10px;padding:16px 16px 12px;border-bottom:1px solid var(--line)}
.side-head a.logo-link{display:flex;align-items:center;gap:10px;min-width:0}
.side-head a.logo-link:hover{text-decoration:none}
.side-title{font-size:13.5px;font-weight:700;color:var(--text-strong);letter-spacing:-.01em;line-height:1.35}
.side-title small{display:block;font-size:11px;font-weight:500;color:var(--faint);letter-spacing:0;margin-top:2px}
.side-close{display:none;margin-left:auto;width:34px;height:34px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg);color:var(--muted)}
.side-search{padding:12px 14px 8px}
.side-search label{display:flex;align-items:center;gap:8px;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:8px 10px;transition:border-color .15s}
.side-search label:focus-within{border-color:var(--accent)}
.side-search svg{width:15px;height:15px;stroke:var(--faint);flex:none}
.side-search input{border:0;outline:0;background:transparent;width:100%;font-size:13px;color:var(--text)}
.side-search input::placeholder{color:var(--faint)}
.side-count{padding:2px 18px 8px;font-size:11px;color:var(--faint);letter-spacing:.02em}
.side-nav{flex:1;overflow-y:auto;padding:0 10px 14px;scrollbar-width:thin;scrollbar-color:#d9d8d4 transparent}
.side-nav::-webkit-scrollbar{width:8px}
.side-nav::-webkit-scrollbar-thumb{background:#dcdad5;border-radius:8px}
.side-nav ol{list-style:none}
.side-item a{
  display:flex;gap:10px;align-items:baseline;padding:6px 10px;border-radius:var(--radius);
  font-size:12.5px;color:#44423d;line-height:1.5;border-left:2px solid transparent;
}
.side-item a:hover{background:#efeeeb;text-decoration:none;color:var(--text-strong)}
.side-item .n{font-variant-numeric:tabular-nums;font-size:10.5px;color:var(--faint);font-weight:700;letter-spacing:.04em;flex:none;padding-top:1px}
.side-item.is-active a{background:#efece7;color:var(--text-strong);font-weight:600;border-left-color:var(--accent);border-radius:0 var(--radius) var(--radius) 0}
.side-item[hidden]{display:none}
.side-foot{border-top:1px solid var(--line);padding:12px 16px;font-size:11.5px;color:var(--muted)}
.side-foot a{color:var(--muted);font-weight:600}
.side-foot a:hover{color:var(--text-strong)}

/* ============ Post layout ============ */
.post-main{margin-left:var(--sidebar-w);padding-top:var(--topbar-h);min-height:100vh}
.notion{max-width:880px;margin:0 auto;padding:38px 48px 90px}
.kicker{display:flex;align-items:center;gap:10px;font-size:11px;font-weight:800;letter-spacing:.12em;color:var(--accent-dark);text-transform:uppercase;margin-bottom:14px}
.kicker::after{content:"";flex:1;height:1px;background:var(--line)}
.post-title{font-size:clamp(24px,3.4vw,34px);line-height:1.32;font-weight:800;letter-spacing:-.02em;color:var(--text-strong);margin-bottom:18px}
.meta-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px}
.meta-pill{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--muted);border:1px solid var(--line);background:var(--bg-soft);border-radius:999px;padding:4px 11px}
.meta-pill b{color:var(--text-strong);font-variant-numeric:tabular-nums}
.meta-pill a{color:var(--muted);font-weight:600}
.meta-pill a:hover{color:var(--accent-dark)}

/* Notion block styles */
.nt-text{margin:10px 0;font-size:15.5px;color:#37352f}
.nt-h2{font-size:22px;font-weight:800;letter-spacing:-.015em;color:var(--text-strong);margin:34px 0 10px;padding-top:6px}
.nt-h3{font-size:17.5px;font-weight:700;letter-spacing:-.01em;color:var(--text-strong);margin:22px 0 8px}
.nt-quote{border-left:3px solid var(--text-strong);padding:2px 0 2px 16px;margin:14px 0;font-size:15.5px;color:#37352f}
.nt-divider{border:0;border-top:1px solid var(--line-strong);margin:26px 0}
.nt-list{margin:8px 0 14px 22px}
.nt-list li{margin:4px 0;padding-left:2px}
.nt-list li::marker{color:#a5a4a0}
.nt-list .nt-list{margin:4px 0 4px 22px}
.nt-callout{background:var(--callout);border:1px solid #dce9f8;border-radius:var(--radius);padding:14px 16px;margin:14px 0}
.nt-callout-t{font-weight:700;margin-bottom:4px;color:var(--text-strong)}
.nt-toggle{border:1px solid var(--line);border-radius:var(--radius);margin:10px 0;background:var(--bg)}
.nt-toggle summary{list-style:none;cursor:pointer;padding:12px 14px;font-weight:650;font-size:15px;color:var(--text-strong);display:flex;gap:10px;align-items:center}
.nt-toggle summary::-webkit-details-marker{display:none}
.nt-toggle summary::before{content:"";width:0;height:0;border-left:6px solid var(--muted);border-top:5px solid transparent;border-bottom:5px solid transparent;transition:transform .18s;flex:none}
.nt-toggle[open] summary::before{transform:rotate(90deg)}
.nt-toggle-body{border-top:1px solid var(--line);padding:10px 14px 14px}
.nt-figure{margin:20px 0}
.nt-figure img{display:block;width:100%;height:auto;border:1px solid var(--line-strong);border-radius:var(--radius);background:#fff}
.nt-figure figcaption{margin-top:8px;font-size:12.5px;color:var(--muted);text-align:center;letter-spacing:-.005em}

/* Code blocks */
.code-block{margin:12px 0;border:1px solid var(--line-strong);border-radius:var(--radius);overflow:hidden;background:var(--code-bg)}
.code-head{display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--code-head);border-bottom:1px solid var(--line-strong);padding:6px 12px}
.code-lang{font-size:11px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}
.copy-btn{font-size:11px;font-weight:700;color:#57554f;background:#fff;border:1px solid var(--line-strong);border-radius:5px;padding:4px 10px;transition:color .15s,border-color .15s}
.copy-btn:hover{color:var(--accent-dark);border-color:var(--accent)}
.code-block pre{overflow-x:auto;padding:13px 14px}
.code-block pre code{background:transparent;border:0;padding:0;color:#28251f;white-space:pre;font-size:13px;line-height:1.65}

/* Tables */
.table-wrap{overflow-x:auto;margin:14px 0;border:1px solid var(--line-strong);border-radius:var(--radius)}
.nt-table{border-collapse:collapse;width:100%;font-size:13.5px;min-width:560px}
.nt-table th{background:var(--bg-soft);text-align:left;font-size:12px;letter-spacing:.02em;color:var(--text-strong);padding:10px 14px;border-bottom:2px solid var(--line-strong);white-space:nowrap}
.nt-table td{padding:9px 14px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.65}
.nt-table tr:last-child td{border-bottom:0}
.nt-table tr:nth-child(even) td{background:#fdfdfc}

/* Post footer nav */
.post-foot{margin-top:44px;border-top:1px solid var(--line-strong);padding-top:26px}
.orig-box{display:flex;flex-wrap:wrap;align-items:center;gap:12px;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;margin-bottom:18px}
.orig-box p{font-size:13px;color:var(--muted);flex:1;min-width:220px}
.orig-box a{font-weight:700;white-space:nowrap}
.prev-next{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.pn{display:flex;flex-direction:column;gap:5px;border:1px solid var(--line);border-radius:var(--radius);padding:13px 16px;background:var(--bg);transition:border-color .15s,box-shadow .15s}
.pn:hover{border-color:var(--line-strong);box-shadow:var(--shadow);text-decoration:none}
.pn span{font-size:11px;font-weight:800;letter-spacing:.1em;color:var(--faint);text-transform:uppercase}
.pn b{font-size:13px;color:var(--text-strong);font-weight:650;line-height:1.5;letter-spacing:-.005em}
.pn.next{text-align:right}

/* CTA box */
.cta-box{margin-top:26px;border:1px solid var(--line);border-radius:var(--radius);padding:22px 22px;background:linear-gradient(180deg,#fffdf8, #fdfcf9);text-align:center}
.cta-box h2{font-size:16px;letter-spacing:-.01em;color:var(--text-strong);margin-bottom:6px}
.cta-box p{font-size:13px;color:var(--muted);margin-bottom:12px}
.cta-links{display:flex;justify-content:center;gap:10px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;border-radius:var(--radius);padding:10px 16px;border:1px solid transparent;transition:transform .15s, box-shadow .15s}
.btn:hover{text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-primary{background:var(--text-strong);color:#fff;border-color:var(--text-strong)}
.btn-primary:hover{color:#fff}
.btn-ghost{background:#fff;color:var(--text-strong);border-color:var(--line-strong)}

/* ============================================================
   LANDING (index)
   ============================================================ */
.landing-top{
  position:sticky;top:0;z-index:40;height:var(--topbar-h);
  display:flex;align-items:center;gap:18px;padding:0 clamp(18px,4vw,44px);
  background:rgba(255,255,255,.88);backdrop-filter:saturate(1.2) blur(10px);-webkit-backdrop-filter:saturate(1.2) blur(10px);
  border-bottom:1px solid var(--line);
}
.lt-logo{display:flex;align-items:center;gap:10px;min-width:0}
.lt-logo:hover{text-decoration:none}
.lt-name{font-size:14px;font-weight:800;color:var(--text-strong);letter-spacing:-.02em;white-space:nowrap}
.lt-name small{display:block;font-size:10.5px;font-weight:600;color:var(--faint);letter-spacing:.08em;text-transform:uppercase}
.lt-nav{margin-left:auto;display:flex;align-items:center;gap:6px}
.lt-nav a{font-size:13px;font-weight:600;color:var(--muted);padding:8px 12px;border-radius:var(--radius)}
.lt-nav a:hover{color:var(--text-strong);background:var(--bg-soft);text-decoration:none}
.lt-nav .gh{display:inline-flex;align-items:center;gap:7px;background:var(--text-strong);color:#fff;border:1px solid var(--text-strong)}
.lt-nav .gh:hover{color:#fff;background:#000}

.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  background:
    radial-gradient(900px 420px at 85% -10%, #eef4ff 0%, transparent 60%),
    radial-gradient(700px 380px at -10% 30%, #f3f9ef 0%, transparent 55%),
    var(--bg);
}
.hero-inner{max-width:1180px;margin:0 auto;padding:clamp(48px,7vw,88px) clamp(18px,4vw,44px) clamp(40px,5vw,64px)}
.badge{display:inline-flex;align-items:center;gap:9px;font-size:11.5px;font-weight:700;color:#3f3e39;background:#fff;border:1px solid var(--line-strong);border-radius:999px;padding:6px 13px;box-shadow:0 1px 2px rgba(15,15,15,.05)}
.badge .dot{width:7px;height:7px;border-radius:50%;background:#22a06b;animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero h1{font-size:clamp(34px,6vw,58px);line-height:1.18;letter-spacing:-.03em;font-weight:850;color:var(--text-strong);margin:20px 0 18px;max-width:15ch}
.hero h1 em{font-style:normal;background:linear-gradient(transparent 62%, #fde68a 62%);padding:0 .08em}
.hero-sub{font-size:clamp(15px,1.6vw,18px);color:#55534e;max-width:62ch;margin-bottom:26px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:34px}
.btn-lg{font-size:14.5px;padding:13px 22px;border-radius:var(--radius)}
.hero-stats{display:flex;gap:0;flex-wrap:wrap;border:1px solid var(--line-strong);background:rgba(255,255,255,.75);backdrop-filter:blur(4px);border-radius:var(--radius);overflow:hidden;max-width:860px}
.hstat{flex:1 1 150px;padding:16px 20px;border-right:1px solid var(--line)}
.hstat:last-child{border-right:0}
.hstat b{display:block;font-size:24px;letter-spacing:-.02em;color:var(--text-strong);font-variant-numeric:tabular-nums}
.hstat span{font-size:11.5px;color:var(--muted);font-weight:600;letter-spacing:.02em}

/* guide grid */
.archive{max-width:1180px;margin:0 auto;padding:44px clamp(18px,4vw,44px) 80px}
.archive-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:6px}
.archive-head h2{font-size:clamp(22px,3vw,30px);letter-spacing:-.02em;color:var(--text-strong)}
.archive-head p{font-size:13px;color:var(--muted);margin-top:4px}
.search-wrap{display:flex;align-items:center;gap:9px;background:#fff;border:1px solid var(--line-strong);border-radius:var(--radius);padding:10px 13px;width:min(380px,100%);transition:border-color .15s, box-shadow .15s}
.search-wrap:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.search-wrap svg{width:16px;height:16px;stroke:var(--faint);flex:none}
.search-wrap input{border:0;outline:0;width:100%;font-size:14px;background:transparent;color:var(--text)}
.result-line{font-size:12px;color:var(--faint);margin:6px 2px 14px;font-variant-numeric:tabular-nums}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.card{
  position:relative;display:flex;flex-direction:column;gap:8px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:16px 16px 14px;min-height:148px;
  transition:transform .18s, box-shadow .18s, border-color .18s;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--line-strong);text-decoration:none}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:8px}
.card-num{font-size:11px;font-weight:800;letter-spacing:.12em;color:var(--faint);font-variant-numeric:tabular-nums}
.card-cat{font-size:10.5px;font-weight:700;letter-spacing:.03em;color:#3d5a80;background:#eef3fa;border:1px solid #dfe8f5;border-radius:999px;padding:3px 10px;white-space:nowrap}
.card h3{font-size:14.5px;line-height:1.55;letter-spacing:-.01em;color:var(--text-strong);font-weight:700;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;min-height:3.1em}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;border-top:1px solid var(--line);padding-top:10px}
.card-foot small{font-size:11px;color:var(--faint);font-weight:600}
.card-read{font-size:12px;font-weight:800;color:var(--accent-dark);white-space:nowrap}
.empty{display:none;text-align:center;padding:54px 20px;border:1px dashed var(--line-strong);border-radius:var(--radius);color:var(--muted);font-size:14px}

/* about strip */
.about{border-top:1px solid var(--line);background:var(--bg-soft)}
.about-inner{max-width:1180px;margin:0 auto;padding:44px clamp(18px,4vw,44px);display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.about h3{font-size:14px;letter-spacing:-.01em;color:var(--text-strong);margin-bottom:6px;display:flex;align-items:center;gap:8px}
.about h3 svg{width:16px;height:16px;stroke:var(--accent-dark);flex:none}
.about p{font-size:13px;color:#55534e;line-height:1.7}

/* footer */
.site-foot{border-top:1px solid var(--line);background:#fff}
.foot-inner{max-width:1180px;margin:0 auto;padding:30px clamp(18px,4vw,44px);display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:12px;color:var(--muted)}
.foot-inner b{color:var(--text-strong)}
.foot-links{display:flex;gap:16px}
.foot-links a{color:var(--muted);font-weight:600}
.foot-links a:hover{color:var(--text-strong)}

/* toast */
.toast{position:fixed;bottom:26px;left:50%;transform:translate(-50%,12px);opacity:0;background:#191919;color:#fff;font-size:13px;font-weight:600;padding:10px 18px;border-radius:var(--radius);pointer-events:none;transition:opacity .2s,transform .2s;z-index:100}
.toast.show{opacity:1;transform:translate(-50%,0)}
.overlay{display:none;position:fixed;inset:0;background:rgba(15,15,15,.35);z-index:45}
body.sidebar-open .overlay{display:block}

/* ============ Responsive ============ */
@media (max-width:1100px){
  .notion{padding:30px 32px 70px}
}
@media (max-width:960px){
  :root{--sidebar-w:0px}
  .sidebar{width:290px;transform:translateX(-102%);transition:transform .25s ease;box-shadow:var(--shadow)}
  body.sidebar-open .sidebar{transform:translateX(0)}
  .side-close{display:flex;align-items:center;justify-content:center}
  .post-main{margin-left:0}
  .topbar{left:0;padding:0 14px}
  .hamburger{display:inline-flex}
  .crumb{display:none}
  .tb-btn .txt{display:none}
  .notation .notion{padding:24px 18px 60px}
  .notion{padding:26px 18px 64px}
  .table-wrap{margin-left:-4px;margin-right:-4px}
  .prev-next{grid-template-columns:1fr}
  .about-inner{grid-template-columns:1fr;gap:18px}
  .lt-nav a:not(.yt){display:none}
  .hstat{flex:1 1 45%}
  .hstat:nth-child(2n){border-right:0}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation-duration:.01ms!important;transition-duration:.01ms!important}
}
@media print{
  .sidebar,.topbar,.post-foot,.cta-box,.toast,.overlay{display:none!important}
  .post-main{margin:0;padding:0}
  .notion{padding:0;max-width:none}
}