/* ===== 토큰 ===== */
:root{
  --bg:#f3f5f7; --surface:#fff; --ink:#1b2433; --muted:#5a6576;
  --line:#d6dbe2; --blue:#2346a0; --blue-weak:#e8edf8; --stamp:#c73e3a;
  --ok:#2f7a4f; --radius:10px; --wrap:960px;
  --font:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;
  color-scheme:light;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 var(--font);word-break:keep-all}
a{color:var(--blue)}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}

/* ===== 헤더/푸터 ===== */
.site-header{background:var(--surface);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;gap:20px;min-height:60px;flex-wrap:wrap}
.brand{font-weight:800;font-size:19px;color:var(--ink);text-decoration:none;letter-spacing:-.02em}
.brand small{font-weight:500;color:var(--muted);font-size:13px;margin-left:6px}
.nav{display:flex;gap:16px;margin-left:auto;overflow-x:auto}
.nav a{color:var(--muted);text-decoration:none;font-size:15px;white-space:nowrap;padding:6px 0}
.nav a[aria-current=page]{color:var(--ink);font-weight:700;border-bottom:2px solid var(--ink)}
.site-footer{margin-top:72px;padding:32px 0 48px;border-top:1px solid var(--line);color:var(--muted);font-size:14px}
.site-footer nav{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:10px}
.site-footer a{color:var(--muted)}

/* ===== 히어로: 서류 + 도장 ===== */
.hero{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center;padding:48px 0 32px}
.hero h1{font-size:clamp(28px,5vw,42px);line-height:1.25;letter-spacing:-.035em;margin:0 0 14px;font-weight:800}
.hero p{color:var(--muted);margin:0;max-width:34em}
.paper{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:4px;padding:22px 20px;font-size:13px;box-shadow:0 12px 0 -6px #e6e9ee,0 12px 0 -5px var(--line)}
.paper table{width:100%;border-collapse:collapse}
.paper th,.paper td{border:1px solid #b9c1cc;padding:5px 6px;text-align:left;font-weight:400}
.paper th{background:#f0f2f5;width:34%}
.paper .bar{height:8px;background:#e3e7ed;border-radius:2px;margin:10px 0 6px}
.paper .bar.s{width:62%}
.stamp{position:absolute;right:14px;bottom:14px;border:2.5px solid var(--stamp);color:var(--stamp);border-radius:6px;padding:2px 10px;font-weight:800;font-size:15px;transform:rotate(-8deg);background:rgba(255,255,255,.75)}
@media (prefers-reduced-motion:no-preference){.stamp{animation:stamp .5s .4s both cubic-bezier(.2,1.6,.4,1)}}
@keyframes stamp{from{transform:rotate(-8deg) scale(1.8);opacity:0}}

/* ===== 도구 ===== */
.tool{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);margin-top:8px}
.tabs{display:flex;border-bottom:1px solid var(--line)}
.tab{flex:1;background:none;border:0;padding:14px 10px;font:inherit;font-weight:600;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}
.tab[aria-selected=true]{color:var(--ink);border-bottom-color:var(--ink)}
.panel{padding:22px 20px}
.panel[hidden]{display:none}
.field{display:block;margin-bottom:14px}
.field>span{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
.row{display:flex;gap:8px}
.row>input{flex:1;min-width:0}
input[type=url],input[type=text],textarea{width:100%;font:inherit;font-size:16px;color:var(--ink);background:#fff;border:1px solid #b9c1cc;border-radius:6px;padding:11px 12px}
textarea{min-height:160px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px;line-height:1.5;resize:vertical}
.hint{font-size:13px;color:var(--muted);margin:6px 0 0}
.opts{display:flex;flex-wrap:wrap;gap:8px 18px;padding:14px 20px;border-top:1px dashed var(--line);font-size:14px}
.opts label{display:flex;gap:6px;align-items:center;cursor:pointer}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font:inherit;font-weight:700;font-size:15px;padding:11px 16px;border-radius:6px;border:1px solid var(--ink);background:#fff;color:var(--ink);cursor:pointer;text-decoration:none;white-space:nowrap}
.btn:disabled{opacity:.5;cursor:progress}
.btn--primary{background:var(--ink);color:#fff}
.btn--blue{background:var(--blue);border-color:var(--blue);color:#fff}
.btn-row{display:flex;flex-wrap:wrap;gap:8px}

.status{font-size:14px;margin:10px 0 0;min-height:1.4em}
.status[data-type=error]{color:var(--stamp)}
.status[data-type=ok]{color:var(--ok)}

.result{margin-top:20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.result[hidden]{display:none}
.result h2{font-size:18px;margin:0 0 12px}
.meta{font-size:13px;color:var(--muted);margin:8px 0 14px;word-break:break-all}
.preview-box{position:relative}
.preview-close{display:none}
.preview-box.is-full{position:fixed;inset:0;z-index:50;background:var(--bg);padding:56px 8px 8px}
.preview-box.is-full .preview-close{display:inline-flex;position:absolute;top:8px;right:8px}
.preview-box.is-full .preview-frame{height:100%;margin:0}
.preview-frame{width:100%;height:60vh;min-height:360px;border:1px solid #b9c1cc;border-radius:4px;background:#fff;margin-top:14px}

/* ===== 저장 버튼(북마클릿) ===== */
.callout{margin-top:28px;background:var(--blue-weak);border:1px solid #c6d2ee;border-radius:var(--radius);padding:22px 20px}
.callout h2{margin:0 0 6px;font-size:20px}
.bm-link{display:inline-block;padding:10px 16px;border:2px dashed var(--blue);border-radius:6px;background:#fff;font-weight:800;text-decoration:none;cursor:grab}
.callout textarea{min-height:80px;margin-top:10px}
.callout textarea[hidden]{display:none}
details.how{margin-top:14px;background:#fff;border:1px solid #c6d2ee;border-radius:6px;padding:10px 14px}
details.how summary{cursor:pointer;font-weight:700}
details.how ol{padding-left:20px;margin:10px 0 4px}

/* ===== 본문 섹션 ===== */
.section{margin-top:56px}
.section>h2{font-size:24px;letter-spacing:-.02em;margin:0 0 16px}
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);border-top:2px solid var(--ink);counter-reset:s}
.steps li{padding:16px 16px 0 0;counter-increment:s}
.steps li::before{content:counter(s);display:block;font-size:30px;font-weight:800;color:var(--blue);line-height:1}
.steps h3{font-size:16px;margin:8px 0 4px}
.steps p{margin:0;color:var(--muted);font-size:15px}
.faq details{border-bottom:1px solid var(--line);padding:14px 0}
.faq summary{cursor:pointer;font-weight:700}
.faq p{margin:8px 0 0;color:var(--muted)}
.prose{max-width:44em}
.prose h1{font-size:30px;letter-spacing:-.03em;margin:40px 0 8px}
.prose h2{font-size:20px;margin:36px 0 8px}
.prose h3{font-size:17px;margin:24px 0 6px}
.prose .updated{color:var(--muted);font-size:14px}
.prose table{border-collapse:collapse;width:100%;font-size:14px}
.prose th,.prose td{border:1px solid var(--line);padding:8px;text-align:left;vertical-align:top}
.prose th{background:#eef1f4}

.ad-slot{margin:40px 0}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:10px 16px;border-radius:6px;font-size:14px;opacity:0;pointer-events:none;transition:opacity .2s}
.toast.show{opacity:1}

@media (max-width:720px){
  .hero{grid-template-columns:1fr;padding-top:28px;gap:24px}
  .steps{grid-template-columns:1fr}
  .steps li{padding:16px 0;border-bottom:1px solid var(--line)}
  .row{flex-direction:column}
  .nav{margin-left:0;width:100%}
}
@media print{.site-header,.site-footer,.ad-slot{display:none}}