/* TaxCalc — 세금 계산기 허브 (연말정산·소득세·실수령액) */
:root{
  --bg:#f6f8fb;
  --bg-card:#ffffff;
  --bg-soft:#eef2f7;
  --line:#e3e8ef;
  --line-2:#d4dce6;
  --ink:#0f1724;
  --ink-2:#374151;
  --ink-3:#5b6573;
  --ink-4:#8993a3;
  --accent:#2563eb;
  --accent-2:#1d4ed8;
  --accent-soft:#e8effe;
  --blue:#0d9488;
  --blue-soft:#d9f3ef;
  --warn:#d97706;
  --warn-soft:#fff4e0;
  --radius:14px;
  --radius-sm:8px;
  --shadow-sm:0 1px 2px rgba(15,23,36,.04), 0 1px 3px rgba(15,23,36,.06);
  --shadow-md:0 4px 12px rgba(15,23,36,.06), 0 2px 6px rgba(15,23,36,.04);
  --shadow-lg:0 12px 36px rgba(15,23,36,.08), 0 4px 12px rgba(15,23,36,.05);
  --max:1140px;
  --max-read:760px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:'Pretendard Variable',Pretendard,-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
  font-weight:400;
  font-size:16px;
  line-height:1.7;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  word-break:keep-all;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent-2);text-decoration:none}
a:hover{text-decoration:underline}
button{font-family:inherit}

/* ===== Header ===== */
.site-header{
  background:#fff;
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:50;
  backdrop-filter:saturate(180%) blur(8px);
  background:rgba(255,255,255,.92);
}
.header-inner{
  max-width:var(--max);
  margin:0 auto;
  padding:14px 24px;
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  font-weight:700;font-size:18px;color:var(--ink);
  text-decoration:none;
}
.brand:hover{text-decoration:none}
.brand-mark{
  width:32px;height:32px;border-radius:9px;
  background:linear-gradient(135deg,var(--accent) 0%,#5b8def 100%);
  display:grid;place-items:center;color:#fff;font-weight:800;
  font-size:15px;letter-spacing:-.02em;
  box-shadow:0 2px 6px rgba(37,99,235,.3);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text small{font-size:11px;color:var(--ink-4);font-weight:500;margin-top:2px}

.nav-main{display:flex;align-items:center;gap:4px}
.nav-main a{
  padding:8px 14px;border-radius:8px;
  color:var(--ink-2);font-size:14.5px;font-weight:500;
  transition:background .15s,color .15s;
}
.nav-main a:hover{background:var(--bg-soft);color:var(--ink);text-decoration:none}
.nav-main a.active{color:var(--accent-2);background:var(--accent-soft)}

.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px;color:var(--ink-2)}
.nav-toggle svg{width:22px;height:22px}

@media (max-width:820px){
  .nav-main{
    display:none;
    position:absolute;top:100%;left:0;right:0;
    background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;
    padding:8px;gap:2px;
    box-shadow:var(--shadow-md);
  }
  .nav-main.open{display:flex}
  .nav-main a{padding:12px 16px}
  .nav-toggle{display:block}
}

/* ===== Hero ===== */
.hero{
  background:linear-gradient(180deg,#e8effe 0%,var(--bg) 100%);
  padding:60px 24px 32px;
  border-bottom:1px solid var(--line);
}
.hero-inner{max-width:var(--max);margin:0 auto;text-align:center}
.hero h1{
  font-size:clamp(28px,4vw,42px);
  line-height:1.25;
  letter-spacing:-.02em;
  font-weight:800;
  margin:0 0 16px;
  color:var(--ink);
}
.hero h1 .accent{color:var(--accent-2)}
.hero p.lead{
  font-size:clamp(15px,1.8vw,18px);
  color:var(--ink-3);
  max-width:660px;margin:0 auto 28px;
}
.hero-stats{
  display:flex;justify-content:center;gap:32px;flex-wrap:wrap;
  margin-top:8px;
}
.hero-stats div{display:flex;flex-direction:column;align-items:center;gap:2px}
.hero-stats .num{font-size:22px;font-weight:700;color:var(--accent-2);letter-spacing:-.02em}
.hero-stats .lbl{font-size:13px;color:var(--ink-4)}

/* ===== Container ===== */
.container{max-width:var(--max);margin:0 auto;padding:48px 24px}
.container-read{max-width:var(--max-read);margin:0 auto;padding:32px 24px 64px}

/* ===== Section ===== */
.section-head{margin-bottom:24px;display:flex;align-items:end;justify-content:space-between;gap:16px;flex-wrap:wrap}
.section-head h2{font-size:24px;font-weight:700;margin:0;letter-spacing:-.02em}
.section-head p{margin:6px 0 0;color:var(--ink-3);font-size:15px}
.section-head a.more{font-size:14px;color:var(--accent-2);font-weight:500;white-space:nowrap}
.section-head a.more:hover{text-decoration:underline}

/* ===== Calculator grid (hero of homepage) ===== */
.calc-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
}
@media (max-width:880px){.calc-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:540px){.calc-grid{grid-template-columns:1fr}}

.calc-card{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
  text-decoration:none;
  color:var(--ink);
  display:flex;flex-direction:column;gap:10px;
  transition:transform .18s,box-shadow .18s,border-color .18s;
  position:relative;overflow:hidden;
}
.calc-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-md);
  border-color:var(--line-2);
  text-decoration:none;
}
.calc-card .icon{
  width:42px;height:42px;border-radius:11px;
  background:var(--accent-soft);
  color:var(--accent-2);
  display:grid;place-items:center;
}
.calc-card .icon svg{width:22px;height:22px}
.calc-card.var-blue .icon{background:var(--blue-soft);color:var(--blue)}
.calc-card.var-warn .icon{background:var(--warn-soft);color:var(--warn)}
.calc-card h3{font-size:17px;margin:4px 0 0;letter-spacing:-.01em;color:var(--ink)}
.calc-card p{margin:0;color:var(--ink-3);font-size:14px;line-height:1.55}
.calc-card .cta{
  margin-top:auto;padding-top:12px;
  font-size:13px;font-weight:600;color:var(--accent-2);
  display:inline-flex;align-items:center;gap:4px;
}

/* ===== Calculator widget (on tool pages) ===== */
.calc-widget{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:28px;
  margin:8px 0 32px;
  box-shadow:var(--shadow-sm);
}
.calc-widget h2.widget-title{
  font-size:18px;margin:0 0 6px;letter-spacing:-.01em;
}
.calc-widget p.widget-desc{margin:0 0 22px;color:var(--ink-3);font-size:14px}

.field-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px 16px;
  margin-bottom:16px;
}
@media (max-width:600px){.field-row{grid-template-columns:1fr}}
.field-row.cols-1{grid-template-columns:1fr}
.field-row.cols-3{grid-template-columns:repeat(3,1fr)}
@media (max-width:600px){.field-row.cols-3{grid-template-columns:1fr}}

.field label{
  display:block;
  font-size:13px;font-weight:500;
  color:var(--ink-2);
  margin-bottom:6px;
}
.field label .hint{color:var(--ink-4);font-weight:400}
.field input,.field select{
  width:100%;
  padding:11px 13px;
  border:1px solid var(--line-2);
  border-radius:8px;
  font-size:15px;
  font-family:inherit;
  color:var(--ink);
  background:#fff;
  outline:none;
  transition:border-color .15s,box-shadow .15s;
}
.field input:focus,.field select:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(37,99,235,.15);
}
.field .unit{position:relative}
.field .unit input{padding-right:52px}
.field .unit-label{
  position:absolute;right:12px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--ink-4);pointer-events:none;
}

.calc-btn{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--accent);color:#fff;border:0;
  padding:12px 22px;border-radius:9px;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background .15s,transform .1s;
}
.calc-btn:hover{background:var(--accent-2)}
.calc-btn:active{transform:translateY(1px)}
.calc-btn.ghost{background:transparent;color:var(--ink-2);border:1px solid var(--line-2)}
.calc-btn.ghost:hover{background:var(--bg-soft)}

.calc-actions{display:flex;gap:10px;align-items:center;margin-top:6px;flex-wrap:wrap}

.calc-result{
  margin-top:24px;
  background:var(--accent-soft);
  border:1px solid #c7d9fb;
  border-radius:var(--radius-sm);
  padding:20px 22px;
}
.calc-result.empty{
  background:var(--bg-soft);border-color:var(--line);
  color:var(--ink-4);font-size:14px;
}
.calc-result h3{margin:0 0 12px;font-size:14px;color:var(--accent-2);letter-spacing:.02em;text-transform:uppercase;font-weight:700}
.calc-result .big{font-size:28px;font-weight:800;letter-spacing:-.02em;color:var(--ink)}
.calc-result .big small{font-size:14px;font-weight:500;color:var(--ink-3);margin-left:6px}
.calc-result .breakdown{margin-top:14px;display:grid;grid-template-columns:1fr 1fr;gap:8px 16px;font-size:14px}
@media (max-width:520px){.calc-result .breakdown{grid-template-columns:1fr}}
.calc-result .breakdown div{display:flex;justify-content:space-between;border-bottom:1px dashed #c7d9fb;padding-bottom:4px}
.calc-result .breakdown div span:first-child{color:var(--ink-3)}
.calc-result .breakdown div span:last-child{color:var(--ink);font-weight:600}
.calc-result .note{margin-top:14px;font-size:12.5px;color:var(--ink-4);line-height:1.5}

/* ===== Featured / cards / list ===== */
.featured-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
}
@media (max-width:880px){.featured-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:540px){.featured-grid{grid-template-columns:1fr}}

.f-card{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px;
  text-decoration:none;color:var(--ink);
  transition:transform .18s,box-shadow .18s;
  display:flex;flex-direction:column;gap:8px;
}
.f-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);text-decoration:none}
.f-card .tag{
  display:inline-block;
  font-size:11.5px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;
  color:var(--accent-2);background:var(--accent-soft);
  padding:3px 8px;border-radius:4px;align-self:start;
}
.f-card .tag.blue{color:var(--blue);background:var(--blue-soft)}
.f-card .tag.warn{color:var(--warn);background:var(--warn-soft)}
.f-card h3{font-size:17px;margin:4px 0 0;letter-spacing:-.01em;line-height:1.35}
.f-card p{margin:0;color:var(--ink-3);font-size:14px;line-height:1.55}
.f-card .meta{
  margin-top:auto;padding-top:10px;
  font-size:12.5px;color:var(--ink-4);
  display:flex;gap:10px;align-items:center;
}
.f-card .meta .dot{width:3px;height:3px;background:var(--ink-4);border-radius:50%}

/* List view (guides index / learn index) */
.list-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:14px;
}
@media (max-width:680px){.list-grid{grid-template-columns:1fr}}
.list-item{
  background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:18px 20px;text-decoration:none;color:var(--ink);
  display:flex;flex-direction:column;gap:6px;
  transition:border-color .15s,transform .15s;
}
.list-item:hover{border-color:var(--accent);transform:translateY(-1px);text-decoration:none}
.list-item h3{margin:0;font-size:16px;letter-spacing:-.01em}
.list-item p{margin:0;font-size:13.5px;color:var(--ink-3);line-height:1.5}
.list-item .tag-row{font-size:11.5px;color:var(--ink-4);margin-top:4px}

/* Learn term grid */
.term-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:10px;
}
@media (max-width:880px){.term-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:600px){.term-grid{grid-template-columns:repeat(2,1fr)}}
.term-chip{
  background:#fff;border:1px solid var(--line);
  border-radius:10px;padding:14px 14px;
  text-decoration:none;color:var(--ink);
  font-size:14px;font-weight:500;
  transition:all .15s;
  display:flex;flex-direction:column;gap:2px;
}
.term-chip:hover{border-color:var(--accent);background:var(--accent-soft);text-decoration:none}
.term-chip small{color:var(--ink-4);font-size:11.5px;font-weight:400}

/* ===== Article ===== */
.crumb{
  font-size:13px;color:var(--ink-4);margin-bottom:18px;
  display:flex;flex-wrap:wrap;gap:6px;align-items:center;
}
.crumb a{color:var(--ink-3)}
.crumb span.sep{color:var(--ink-4)}

.article-head{margin:8px 0 28px}
.article-head .eyebrow{
  display:inline-block;
  font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
  color:var(--accent-2);background:var(--accent-soft);
  padding:4px 10px;border-radius:4px;margin-bottom:14px;
}
.article-head h1{
  font-size:clamp(26px,3.5vw,34px);
  line-height:1.3;letter-spacing:-.02em;
  margin:0 0 14px;font-weight:800;
}
.article-head .deck{
  font-size:17px;color:var(--ink-3);
  margin:0 0 16px;line-height:1.6;
}
.article-head .article-meta{
  font-size:13px;color:var(--ink-4);
  border-top:1px solid var(--line);
  padding-top:14px;
  display:flex;gap:14px;flex-wrap:wrap;
}

.article-body{font-size:16.5px;line-height:1.8;color:var(--ink-2)}
.article-body p{margin:0 0 18px}
.article-body h2{
  font-size:22px;margin:38px 0 14px;
  letter-spacing:-.01em;color:var(--ink);font-weight:700;
  padding-bottom:6px;border-bottom:1px solid var(--line);
}
.article-body h3{font-size:18px;margin:26px 0 10px;color:var(--ink);font-weight:700}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px}
.article-body li{margin-bottom:6px}
.article-body li::marker{color:var(--accent)}
.article-body blockquote{
  margin:20px 0;
  padding:14px 20px;
  background:var(--bg-soft);border-left:3px solid var(--accent);
  border-radius:0 8px 8px 0;
  color:var(--ink-2);font-size:15.5px;
}
.article-body strong{color:var(--ink);font-weight:700}
.article-body code{
  background:var(--bg-soft);
  padding:2px 6px;border-radius:4px;
  font-size:.92em;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
}
.article-body table{
  width:100%;border-collapse:collapse;margin:18px 0;font-size:14.5px;
}
.article-body th,.article-body td{
  text-align:left;padding:10px 12px;
  border-bottom:1px solid var(--line);vertical-align:top;
}
.article-body th{background:var(--bg-soft);font-weight:600;color:var(--ink)}
.article-body .callout{
  background:var(--accent-soft);
  border:1px solid #c7d9fb;
  padding:16px 18px;border-radius:10px;
  margin:20px 0;font-size:15px;
}
.article-body .callout strong{color:var(--accent-2)}
.article-body .callout.warn{background:var(--warn-soft);border-color:#ffd9a8}
.article-body .callout.warn strong{color:var(--warn)}
.article-body .callout.tip{background:var(--blue-soft);border-color:#a9e2d9}
.article-body .callout.tip strong{color:var(--blue)}

.article-toc{
  background:var(--bg-card);border:1px solid var(--line);
  border-radius:10px;padding:18px 22px;margin:0 0 24px;
}
.article-toc h4{margin:0 0 8px;font-size:13px;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-4);font-weight:700}
.article-toc ol{margin:0;padding-left:18px;font-size:14.5px;line-height:1.7}
.article-toc a{color:var(--ink-2)}

.related-block{
  margin-top:48px;padding-top:28px;border-top:1px solid var(--line);
}
.related-block h4{font-size:14px;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-4);font-weight:700;margin:0 0 12px}
.related-block .list-grid{margin-top:6px}

/* ===== Source note ===== */
.source-note{
  margin-top:36px;
  background:var(--bg-soft);
  border-radius:10px;padding:16px 20px;
  font-size:13px;color:var(--ink-3);line-height:1.65;
}
.source-note strong{color:var(--ink-2)}

/* ===== Footer ===== */
.site-footer{
  background:#0f1724;color:#aab1bd;
  margin-top:80px;padding:48px 24px 32px;font-size:14px;
}
.site-footer .footer-inner{
  max-width:var(--max);margin:0 auto;
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;
}
@media (max-width:760px){.site-footer .footer-inner{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.site-footer .footer-inner{grid-template-columns:1fr}}
.site-footer h5{color:#fff;font-size:14px;margin:0 0 12px;font-weight:600}
.site-footer .brand-foot{font-size:18px;color:#fff;font-weight:700;margin-bottom:8px;letter-spacing:-.01em}
.site-footer p{margin:0 0 6px;color:#7d8694;line-height:1.65}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer ul li{margin-bottom:6px}
.site-footer a{color:#aab1bd;font-size:13.5px}
.site-footer a:hover{color:#fff;text-decoration:none}
.site-footer .copy{
  max-width:var(--max);margin:32px auto 0;padding-top:24px;border-top:1px solid #1d2734;
  font-size:12.5px;color:#6b7585;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
}

/* ===== Misc ===== */
.spacer-lg{height:48px}
.spacer-md{height:24px}
hr.div{border:0;border-top:1px solid var(--line);margin:36px 0}

.center{text-align:center}
.btn-ghost{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 16px;border:1px solid var(--line-2);border-radius:8px;
  font-size:14px;color:var(--ink-2);background:#fff;text-decoration:none;
  transition:all .15s;
}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent-2);text-decoration:none}

.chip{
  display:inline-block;padding:3px 10px;
  background:var(--bg-soft);border-radius:99px;
  font-size:12.5px;color:var(--ink-3);font-weight:500;
  margin-right:6px;
}

.notfound{text-align:center;padding:80px 24px}
.notfound h1{font-size:80px;margin:0;color:var(--accent-2);font-weight:800;letter-spacing:-.04em}
.notfound p{font-size:17px;color:var(--ink-3);margin:10px 0 28px}