:root{color-scheme:light;--ink:#19213b;--muted:#677186;--line:#dfe5f1;--blue:#5269e8;--blue-dark:#3447b9;--surface:#fff;--background:#f6f8fd}
*{box-sizing:border-box}
body{margin:0;color:var(--ink);font-family:Pretendard,"Noto Sans KR",system-ui,sans-serif;background:radial-gradient(circle at 10% 0%,#e7edff,transparent 32rem),var(--background)}
a{color:inherit}
button,input,select{font:inherit}
.page{width:min(100% - 32px,1040px);margin:auto;padding:18px 0 40px}
.site-header{display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:inline-flex;align-items:center;gap:9px;text-decoration:none;font-size:16px;font-weight:900;letter-spacing:-.04em}
.brand img{width:44px;height:44px;object-fit:contain}
.brand small{display:block;color:var(--muted);font-size:9px;letter-spacing:.08em}
.header-links{display:flex;align-items:center;gap:8px}
.header-links a{padding:8px 11px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--blue-dark);font-size:12px;font-weight:800;text-decoration:none;white-space:nowrap}
.intro{margin:28px 0 20px}
.eyebrow{color:var(--blue-dark);font-size:11px;font-weight:900;letter-spacing:.12em}
h1{margin:7px 0 8px;font-size:clamp(29px,4vw,42px);line-height:1.18;letter-spacing:-.055em}
.intro p{margin:0;color:var(--muted);font-size:15px;line-height:1.55}
.section-heading{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin:0 0 11px}
.section-heading h2{margin:0;font-size:20px;letter-spacing:-.04em}
.section-heading span{color:var(--muted);font-size:12px}
.tool-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:11px}
.tool-card{display:flex;min-height:130px;flex-direction:column;justify-content:space-between;gap:11px;padding:17px;border:1px solid var(--line);border-radius:19px;background:var(--surface);text-decoration:none;box-shadow:0 7px 25px rgba(42,55,99,.05);transition:transform .18s,border-color .18s,box-shadow .18s}
.tool-card:hover,.tool-card:focus-visible{transform:translateY(-2px);border-color:#9daaf6;box-shadow:0 12px 28px rgba(55,74,169,.12)}
.tool-card.featured{background:linear-gradient(140deg,#eef2ff,#fff);border-color:#b8c4fc}
.tool-icon{font-size:25px;line-height:1}
.tool-card strong{display:block;font-size:17px;letter-spacing:-.035em}
.tool-card small{display:block;margin-top:3px;color:var(--muted);font-size:12px;line-height:1.35}
.tool-card .arrow{color:var(--blue-dark);font-size:17px;font-weight:900}
.hub-note{margin:15px 0 0;color:var(--muted);font-size:12px;line-height:1.6}
.hub-note a{color:var(--blue-dark);font-weight:800;text-underline-offset:2px}
.guide{margin-top:26px;padding:22px;border:1px solid var(--line);border-radius:21px;background:#fff}
.guide h2{margin:0 0 10px;font-size:20px;letter-spacing:-.035em}
.guide p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
.guide h3{margin:20px 0 6px;font-size:15px}
.guide ul{margin:6px 0 0;padding-left:21px;color:var(--muted);font-size:14px;line-height:1.7}
.guide li+li{margin-top:5px}
.site-footer{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-top:30px;padding-top:19px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}
.footer-links{display:flex;gap:12px;flex-wrap:wrap}
.footer-links a{text-decoration:none}
.calculator-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.92fr);gap:14px;align-items:start}
.panel{padding:22px;border:1px solid var(--line);border-radius:21px;background:#fff;box-shadow:0 9px 28px rgba(42,55,99,.05)}
.panel h2{margin:0 0 15px;font-size:18px;letter-spacing:-.035em}
.mode-tabs{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-bottom:16px}
.mode-tabs button{min-height:42px;border:1px solid var(--line);border-radius:11px;background:#f8faff;color:var(--muted);font-size:13px;font-weight:800;cursor:pointer}
.mode-tabs button[aria-pressed="true"]{border-color:var(--blue);background:#eef1ff;color:var(--blue-dark)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:11px}
.field-row[hidden],.check-row[hidden]{display:none}
.field{display:grid;gap:6px;min-width:0}
.field label{font-size:12px;font-weight:800}
.field input{width:100%;min-height:46px;padding:0 11px;border:1px solid #cbd4e4;border-radius:11px;background:#fff;color:var(--ink);font-size:16px}
.field input:focus,.mode-tabs button:focus-visible,.calculate-button:focus-visible{outline:3px solid #b7c4ff;outline-offset:2px}
.check-row{display:flex;align-items:center;gap:8px;margin:13px 0;color:var(--muted);font-size:12px}
.check-row input{width:16px;height:16px;accent-color:var(--blue)}
.calculate-button{width:100%;min-height:47px;border:0;border-radius:12px;background:var(--blue);color:#fff;font-weight:850;cursor:pointer}
.calculate-button:hover{background:var(--blue-dark)}
.result-panel{display:grid;align-content:start;min-height:216px}
.result-hero{padding:20px;border-radius:16px;background:linear-gradient(130deg,#5269e8,#3548b9);color:#fff}
.result-hero span{display:block;font-size:12px;opacity:.88}
.result-hero strong{display:block;margin-top:8px;font-size:clamp(28px,4vw,37px);line-height:1.2;letter-spacing:-.05em;overflow-wrap:anywhere}
.result-detail{margin:13px 2px 0;color:var(--muted);font-size:14px;line-height:1.55}
.error{color:#ab3030}
.related{margin-top:22px}
.related-links{display:flex;gap:8px;flex-wrap:wrap}
.related-links a{padding:9px 12px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--blue-dark);font-size:12px;font-weight:800;text-decoration:none}
.adfit-shell[hidden]{display:none}
.adfit-shell{display:none;width:min(100%,380px);min-height:118px;grid-template-rows:10px 100px;place-items:center;gap:6px;margin:25px auto 0;background:transparent}
.adfit-label{color:#8b92a2;font-size:9px;font-weight:800}
.adfit-shell[data-adfit-fluid] .kakao_ad_area{width:100%!important;max-width:100%}
@media(max-width:980px){.adfit-shell:not([hidden]){display:grid}}
@media(max-width:760px){
  .page{width:min(100% - 24px,1040px);padding-top:10px}
  .brand img{width:38px;height:38px}
  .brand{font-size:14px}
  .header-links a{padding:7px 9px;font-size:11px}
  .intro{margin:19px 0 16px}
  .intro p{font-size:13px;line-height:1.45}
  .tool-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
  .tool-card{min-height:91px;gap:2px;padding:11px 12px;border-radius:14px}
  .tool-icon{font-size:20px}
  .tool-card strong{font-size:14px}
  .tool-card small{font-size:10px;line-height:1.2}
  .tool-card .arrow{display:none}
  .section-heading h2{font-size:17px}
  .calculator-layout{grid-template-columns:1fr;gap:10px}
  .panel{padding:15px;border-radius:17px}
  .panel h2{margin-bottom:10px;font-size:16px}
  .mode-tabs{margin-bottom:12px}
  .result-panel{min-height:0}
  .result-hero{padding:15px}
  .result-hero strong{font-size:28px}
  .guide{margin-top:20px;padding:17px}
  .adfit-shell{position:relative;left:50%;width:max(320px,calc(100vw - 16px));margin-left:0;transform:translateX(-50%)}
}
@media(max-width:380px){.header-links a:last-child{display:none}.field-row{gap:7px}.field input{padding:0 6px}}
.hub-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:18px;align-items:start}
.hub-main{min-width:0}
.hub-main .intro{margin:26px 0 19px}
.hub-main .tool-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}
.hub-main .tool-card{position:relative;display:grid;grid-template-columns:56px minmax(0,1fr);align-items:center;min-height:91px;gap:9px;padding:12px;border-radius:16px}
.hub-main .tool-card>span:nth-child(2){min-width:0}
.hub-main .tool-card strong{font-size:15px}
.hub-main .tool-card small{font-size:10px;line-height:1.28}
.hub-main .tool-card .arrow{position:absolute;right:10px;top:8px;font-size:13px}
.hub-main .tool-icon{display:block;width:56px;height:56px;object-fit:cover;border-radius:14px}
.hub-main .date-icon{display:grid;place-items:center;background:linear-gradient(145deg,#e7eeff,#d9e4ff);font-size:30px}
.hub-side{display:grid;gap:13px;padding-top:26px}
.desktop-ad[hidden]{display:none}
.desktop-ad:not([hidden]){display:grid;width:300px;min-height:250px;grid-template-rows:12px 250px;place-items:center;gap:6px;color:#8b92a2;font-size:9px}
.side-promo{display:grid;gap:5px;padding:15px;border:1px solid #c8d4ff;border-radius:17px;background:linear-gradient(130deg,#edf2ff,#fff);text-decoration:none}
.side-promo>img{width:54px;height:54px;border-radius:13px;object-fit:cover}
.side-promo strong{font-size:16px;letter-spacing:-.03em}
.side-promo small{color:var(--muted);font-size:12px}
.side-promo b{margin-top:3px;color:var(--blue-dark);font-size:12px}
@media(max-width:980px){.hub-layout{grid-template-columns:1fr}.hub-side{padding-top:0}.desktop-ad{display:none!important}}
@media(max-width:760px){
  .hub-main .intro{margin:19px 0 16px}
  .hub-main .tool-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
  .hub-main .tool-card{display:flex;min-height:104px;flex-direction:column;align-items:flex-start;justify-content:center;gap:5px;padding:10px 11px}
  .hub-main .tool-icon{width:39px;height:39px;border-radius:11px}
  .hub-main .date-icon{font-size:23px}
  .hub-main .tool-card strong{font-size:13px}
  .hub-main .tool-card small{font-size:10px}
  .hub-main .tool-card .arrow,.side-promo{display:none}
}