:root{
  --bg:#F6F8FF;
  --card:#FFFFFF;
  --text:#0F172A;
  --muted:#64748B;
  --border:#E2E8F0;
  --brand:#5B7CFF;
  --accent:#22C55E;
  --shadow:0 12px 30px rgba(15,23,42,.08);
  --radius:18px;
  --radius2:24px;
  --container:1120px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:Pretendard,system-ui,-apple-system,Segoe UI,Roboto,"Apple SD Gothic Neo","Noto Sans KR",sans-serif;color:var(--text);background:radial-gradient(800px 500px at 10% 0%, rgba(91,124,255,.20), transparent 60%),radial-gradient(700px 400px at 95% 10%, rgba(34,197,94,.14), transparent 55%),var(--bg)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--container);margin:0 auto;padding:18px 16px 56px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius2);box-shadow:var(--shadow);padding:18px}
.grid{display:grid;gap:14px}
@media (min-width:860px){.grid--2{grid-template-columns:1.1fr .9fr}.grid--3{grid-template-columns:repeat(3,1fr)}}
.h1{font-size:32px;line-height:1.18;margin:0;letter-spacing:-.4px}
.h2{font-size:20px;line-height:1.25;margin:0}
.p{margin:0;color:var(--muted);line-height:1.7}
.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.sep{height:1px;background:var(--border);margin:8px 0}
.badge{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;background:rgba(91,124,255,.10);border:1px solid rgba(91,124,255,.18);color:#1E3A8A;font-weight:800;font-size:12px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:14px;border:1px solid var(--border);background:#fff;box-shadow:0 6px 16px rgba(15,23,42,.06);font-weight:900;cursor:pointer}
.btn--brand{background:var(--brand);border-color:transparent;color:#fff}
.input, textarea, select{width:100%;padding:12px 14px;border-radius:14px;border:1px solid var(--border);background:#fff;outline:none;font-size:14px;font:inherit}
.input:focus, textarea:focus, select:focus{border-color:rgba(91,124,255,.55);box-shadow:0 0 0 4px rgba(91,124,255,.12)}
.notice{border:1px dashed rgba(91,124,255,.35);background:rgba(91,124,255,.06);border-radius:var(--radius2);padding:14px}
.small{font-size:12px;color:var(--muted)}
.hero{display:grid;gap:18px}
@media (min-width:960px){.hero{grid-template-columns:1.2fr .8fr;align-items:center}}
.hero-title{font-size:42px;line-height:1.1;margin:10px 0 12px;letter-spacing:-1px}
.hero-desc{max-width:720px}
.hero-panel{display:flex;justify-content:center}
.mini-flow{width:100%;display:grid;gap:10px}
.mini-flow > div{background:#fff;border:1px solid var(--border);border-radius:18px;padding:14px 16px;font-weight:800;box-shadow:0 8px 20px rgba(15,23,42,.05)}
.feature-card{min-height:180px}
.form-card{display:flex;flex-direction:column;gap:14px}
.editor-textarea{min-height:340px}
.post-list-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.post-card{display:flex;flex-direction:column;gap:12px}
.post-card__thumb{aspect-ratio:16/9;border-radius:18px;overflow:hidden;background:linear-gradient(135deg, rgba(91,124,255,.12), rgba(34,197,94,.10))}
.post-card__thumb img{width:100%;height:100%;object-fit:cover}
.post-meta{display:flex;justify-content:space-between;gap:10px;align-items:flex-start}
.post-card__title{font-size:20px;line-height:1.25;font-weight:1000;letter-spacing:-.3px}
.post-card__summary{font-size:14px;line-height:1.65;color:var(--muted)}
.post-shell{display:flex;flex-direction:column;gap:16px}
.post-hero{display:flex;flex-direction:column;gap:14px}
.post-title{max-width:900px}
.post-summary{font-size:16px}
.post-cover{width:100%;max-height:420px;object-fit:cover;border-radius:20px;border:1px solid var(--border)}
.post-grid{display:grid;gap:16px}
@media (min-width:980px){.post-grid{grid-template-columns:minmax(0,1fr) 320px}}
.post-body{padding:26px}
.post-body h1,.post-body h2,.post-body h3,.post-body h4{line-height:1.3;letter-spacing:-.3px;margin:26px 0 12px}
.post-body p{line-height:1.9;color:#1e293b;margin:0 0 16px}
.post-body ul,.post-body ol{margin:0 0 18px 20px;padding:0;line-height:1.9;color:#1e293b}
.post-body blockquote{margin:22px 0;padding:18px;border-left:4px solid var(--brand);background:rgba(91,124,255,.06);border-radius:16px}
.post-body code{background:#eff6ff;padding:3px 6px;border-radius:8px;font-size:.92em}
.post-side{height:max-content;position:sticky;top:82px}
.tag-chip{display:inline-flex;padding:7px 10px;border-radius:999px;background:#eef2ff;color:#334155;font-size:12px;font-weight:800}
.plain-list{margin:0;padding-left:18px;line-height:1.8;color:#334155}
.post-shell--tip .post-hero{border:1px solid rgba(34,197,94,.18);box-shadow:0 12px 32px rgba(34,197,94,.08)}
.post-shell--review .post-hero{border:1px solid rgba(91,124,255,.22);box-shadow:0 12px 32px rgba(91,124,255,.10)}