/* every-calc 공통 스타일. 기준: UI UX Pro Max "Calculator & Unit Converter" (Minimal & Direct, 주황 주요 버튼, 장식 최소) */
:root{
  --bg:#F7F4EF;--surface:#FFFFFF;--text:#1C1A17;--muted:#5A554E;--line:#E6E0D7;--field:#FFFFFF;
  --accent:#C2410C;--accent-strong:#9A3412;--accent-soft:#FFF1E7;--on-accent:#FFFFFF;
  --warn-bg:#FFF7E0;--warn-line:#EBC46A;--warn-text:#5A4300;--err:#B42318;--err-bg:#FEF1F0;
  --ring:rgba(194,65,12,.28);--shadow:0 1px 2px rgba(28,26,23,.05),0 6px 20px rgba(28,26,23,.06);
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#151412;--surface:#1F1D1A;--text:#F3EFE9;--muted:#B9B1A6;--line:#36322D;--field:#171614;
    --accent:#FB8C3C;--accent-strong:#FDA35F;--accent-soft:#2C2017;--on-accent:#1C1A17;
    --warn-bg:#2B2413;--warn-line:#7A6224;--warn-text:#F3DFA8;--err:#FF8A80;--err-bg:#2E1B19;
    --ring:rgba(251,140,60,.35);--shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.35);
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;display:flex;flex-direction:column;background:var(--bg);color:var(--text);line-height:1.6;
  font-family:-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Pretendard","Noto Sans KR","Malgun Gothic",system-ui,sans-serif;
  word-break:keep-all;overflow-wrap:anywhere}
[hidden]{display:none!important}
.wrap{width:100%;max-width:640px;margin:0 auto;padding-left:16px;padding-right:16px}
.wrap.wide{max-width:960px}
main{flex:1 0 auto;padding-bottom:40px}

/* 머리글·바닥글 */
.site-header{position:sticky;top:0;z-index:10;border-bottom:1px solid var(--line);background:var(--bg);background:color-mix(in srgb,var(--bg) 88%,transparent);-webkit-backdrop-filter:saturate(1.4) blur(10px);backdrop-filter:saturate(1.4) blur(10px)}
.header-row{display:flex;align-items:center;justify-content:space-between;min-height:56px}
.brand{display:inline-flex;align-items:center;gap:8px;color:var(--text);font-weight:800;font-size:1rem;letter-spacing:.01em;text-decoration:none}
.brand svg{width:22px;height:22px;color:var(--accent)}
.brand.small{font-size:.92rem;color:var(--muted)}
.nav{display:flex;align-items:center;gap:14px}
.nav-link{color:var(--muted);font-weight:600;font-size:.92rem;text-decoration:none;padding:10px 4px}
.nav-link:hover,.footer-links a:hover{color:var(--accent-strong)}
.site-footer{border-top:1px solid var(--line);padding:24px 0 32px;margin-top:24px}
.footer-links{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:12px}
.footer-links a{color:var(--muted);font-size:.88rem;text-decoration:none}
a:focus-visible,button:focus-visible{outline:3px solid var(--text);outline-offset:3px;border-radius:6px}

/* 머리 부분 */
.hero{padding:22px 0 6px}
h1{font-size:1.65rem;line-height:1.3;margin:0 0 8px;letter-spacing:-.01em}
.lead{margin:0 0 14px;color:var(--muted);font-size:1.02rem}
.steps{list-style:none;counter-reset:s;margin:4px 0 0;padding:14px;display:grid;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:14px}
@media (min-width:560px){.steps{grid-template-columns:1fr 1fr}}
.steps li{counter-increment:s;position:relative;padding:1px 0 1px 32px;font-size:.88rem;color:var(--muted);line-height:1.5}
.steps li::before{content:counter(s);position:absolute;left:0;top:1px;width:24px;height:24px;border-radius:50%;
  background:var(--accent-soft);color:var(--accent-strong);font-weight:700;font-size:.8rem;display:grid;place-items:center}

/* 카드·입력 */
.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:20px;margin:16px 0;box-shadow:var(--shadow)}
.field{margin:0 0 18px}
label{display:block;font-weight:700;font-size:.98rem;margin:0 0 8px}
.control{position:relative}
input,select{width:100%;height:52px;font-size:17px;font-family:inherit;color:var(--text);background:var(--field);
  border:1.5px solid var(--line);border-radius:12px;padding:0 64px 0 14px;font-variant-numeric:tabular-nums;
  transition:border-color .15s,box-shadow .15s;-webkit-appearance:none;appearance:none}
select{padding-right:44px;cursor:pointer}
input::placeholder{color:#9A938A}
input:hover,select:hover{border-color:#CFC6BA}
input:focus,select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px var(--ring)}
.unit{position:absolute;right:14px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:.92rem;font-weight:600;pointer-events:none}
.chev{position:absolute;right:18px;top:50%;width:9px;height:9px;margin-top:-7px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg);pointer-events:none}
.hint{font-size:.86rem;color:var(--muted);margin:7px 2px 0;line-height:1.5}
button{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:22px;width:100%;min-height:54px;
  font-size:17px;font-family:inherit;font-weight:700;border:0;border-radius:14px;background:var(--accent);color:var(--on-accent);
  cursor:pointer;transition:transform .15s,background-color .15s;box-shadow:0 6px 16px rgba(194,65,12,.22)}
button:hover{background:var(--accent-strong)}
button:active{transform:translateY(1px) scale(.99)}
.err{color:var(--err);background:var(--err-bg);border-radius:10px;padding:10px 12px;margin-top:14px;font-weight:600;font-size:.95rem}
.err:empty{display:none}

/* 결과 */
.result{position:relative;overflow:hidden;scroll-margin-top:72px}
.result::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--accent)}
.result h2{font-size:1.08rem;margin:0 0 14px}
.stats{display:grid;grid-template-columns:1fr;gap:10px}
@media (min-width:480px){.stats{grid-template-columns:1fr 1.25fr}}
.stat{border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.stat.main{background:var(--accent-soft);border-color:transparent}
.stat-label{font-size:.88rem;color:var(--muted);font-weight:600}
.big{font-size:1.9rem;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1.25;margin-top:4px}
.stat.main .big{color:var(--accent-strong)}
.note{margin:14px 0;padding:12px 14px;border-radius:12px;background:var(--bg);font-size:.95rem}
table{width:100%;border-collapse:collapse;font-size:.94rem;font-variant-numeric:tabular-nums}
td{padding:11px 0;border-bottom:1px solid var(--line);vertical-align:top}
td+td{text-align:right;font-weight:700;white-space:nowrap;padding-left:12px}
tr:last-child td{border-bottom:0}
.warn{background:var(--warn-bg);border:1px solid var(--warn-line);color:var(--warn-text);border-radius:12px;padding:12px 14px;margin-top:14px;font-size:.92rem;line-height:1.55}
.basis{margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);font-size:.82rem;color:var(--muted)}
.basis p{margin:0 0 8px}
.basis p:last-child{margin:0}

/* 머리 부분 꾸밈 */
.chip{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;background:var(--accent-soft);color:var(--accent-strong);font-size:.78rem;font-weight:700}
.hero-top{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.hero-icon{width:44px;height:44px;border-radius:14px;background:var(--accent);color:var(--on-accent);display:grid;place-items:center;box-shadow:0 6px 16px rgba(194,65,12,.25)}
.hero-icon svg{width:24px;height:24px}
.home-hero{margin:24px 0 8px;padding:28px 22px;border-radius:24px;border:1px solid var(--line);
  background:radial-gradient(120% 140% at 0% 0%,var(--accent-soft) 0%,transparent 60%),var(--surface)}
.home-hero h1{font-size:1.9rem;margin:0 0 8px}
.home-hero .lead{margin:0}
@media (min-width:720px){.home-hero{padding:40px 36px}.home-hero h1{font-size:2.3rem}}

/* 관련 블로그 글 */
.posts{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.posts a{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:14px 16px;background:var(--surface);border:1px solid var(--line);border-radius:14px;color:var(--text);text-decoration:none;font-weight:600}
.posts a:hover{border-color:var(--accent)}
.posts a span{color:var(--accent-strong);white-space:nowrap}

/* 계산기 목록 카드 */
.section-title{font-size:1.05rem;margin:28px 0 10px}
.calc-grid{display:grid;grid-template-columns:1fr;gap:12px;margin:16px 0}
@media (min-width:560px){.calc-grid{grid-template-columns:1fr 1fr}}
@media (min-width:860px){.home-grid{grid-template-columns:1fr 1fr 1fr}}
.calc-card{display:flex;flex-direction:column;gap:6px;background:var(--surface);border:1px solid var(--line);border-radius:16px;
  padding:16px 16px 14px;text-decoration:none;color:var(--text);box-shadow:var(--shadow);transition:border-color .15s,transform .15s}
.calc-card:hover{border-color:var(--accent)}
.calc-card:active{transform:translateY(1px)}
.calc-icon{width:40px;height:40px;border-radius:12px;background:var(--accent-soft);color:var(--accent-strong);display:grid;place-items:center}
.calc-icon svg{width:22px;height:22px}
.calc-cat{font-size:.78rem;font-weight:700;color:var(--accent-strong)}
.calc-title{font-size:1.05rem;font-weight:800}
.calc-text{font-size:.9rem;color:var(--muted);line-height:1.5}
.calc-go{margin-top:4px;font-size:.9rem;font-weight:700;color:var(--accent-strong)}
.calc-card.featured{grid-column:1/-1;display:grid;grid-template-columns:auto 1fr;column-gap:16px;row-gap:4px;align-items:start;padding:20px}
.calc-card.featured .calc-icon{grid-row:1/span 4;width:52px;height:52px;border-radius:16px;background:var(--accent);color:var(--on-accent)}
.calc-card.featured .calc-icon svg{width:28px;height:28px}
.calc-card.featured .calc-title{font-size:1.2rem}
.calc-card.featured .calc-go{justify-self:start;margin-top:8px;padding:9px 16px;border-radius:999px;background:var(--accent);color:var(--on-accent)}
@media (min-width:720px){.calc-card.featured{grid-template-columns:auto 1fr auto;align-items:center}.calc-card.featured .calc-icon{grid-row:1/span 3}.calc-card.featured .calc-go{grid-column:3;grid-row:1/span 3;align-self:center;margin:0}}

/* 광고 자리 (site.json의 ads.enabled가 true일 때만 만들어집니다) */
.ad{margin:24px 0;min-height:120px}
.ad-label{font-size:.75rem;color:var(--muted);margin:0 0 4px}

@media (prefers-reduced-motion: reduce){*{transition:none!important;scroll-behavior:auto!important}}