@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;500;600;700;800;900&display=swap');
:root{--navy:#182b44;--ink:#233349;--muted:#718093;--orange:#e86d37;--paper:#f8f7f3;--line:#e5e8e9;--blue:#edf2f7;--radius:20px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--paper);color:var(--ink);font-family:'Noto Sans KR','Malgun Gothic',sans-serif;font-size:14px;letter-spacing:-.025em;line-height:1.65}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}button,a,input,select,summary{outline-offset:4px}:focus-visible{outline:3px solid #e86d37}button{color:inherit}button:hover,a:hover{filter:brightness(.97)}.skip{position:absolute;top:-100px;z-index:20;padding:12px;background:white}.skip:focus{top:4px}.header{background:#fffefb;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}.header-inner{max-width:1320px;margin:auto;min-height:88px;display:flex;align-items:center;gap:38px;padding:0 40px}.brand{display:flex;gap:10px;align-items:center;font-size:24px;font-weight:900;line-height:1.2;flex-shrink:0}.brand small{font-size:8px;letter-spacing:.19em;display:block;margin-top:4px}.brand-mark{background:var(--navy);color:white;width:40px;height:42px;display:grid;place-items:center;position:relative;border-radius:11px;font-size:34px;font-family:Arial;font-weight:700;padding-bottom:4px}.brand-mark span{position:absolute;right:2px;top:-7px;color:var(--orange);font-size:38px}nav{display:flex;justify-content:flex-end;gap:24px;flex:1;align-items:center}nav>details{position:relative}nav summary{cursor:pointer;font-size:13px;font-weight:600;list-style:none;white-space:nowrap;padding:32px 0}nav summary::-webkit-details-marker{display:none}nav summary::after{content:'⌄';margin-left:6px;font-size:12px;color:var(--muted)}nav .nav-link{font-size:13px;font-weight:600}nav details[open] summary{color:var(--orange)}.dropdown{position:absolute;top:75px;left:-24px;background:white;border:1px solid var(--line);padding:12px;border-radius:14px;box-shadow:0 16px 45px #182b4416;width:240px;max-height:70vh;overflow:auto}.dropdown a{display:block;padding:9px 12px;font-size:13px;border-radius:8px}.dropdown a:hover{background:var(--paper);color:var(--orange)}nav details:last-child .dropdown{left:auto;right:-10px}.header-search{font-size:30px;line-height:1;border-left:1px solid var(--line);padding-left:20px}.menu-toggle{display:none}.wrap{max-width:1240px;padding:0 40px;margin:auto}.hero{display:grid;grid-template-columns:1.15fr 1fr;gap:50px;padding-top:70px;padding-bottom:60px;align-items:center}.eyebrow{display:flex;align-items:center;gap:9px;font-size:10px;font-weight:700;letter-spacing:.16em;text-transform:uppercase}.dot{width:6px;height:6px;border-radius:50%;background:var(--orange);display:inline-block}.hero h1{font-size:54px;letter-spacing:-.065em;line-height:1.3;margin:24px 0 22px;font-weight:800}.hero h1 span{color:var(--orange)}.hero p{font-size:15px;color:#6d7885;line-height:1.9}.hero-search{background:white;border:1px solid #dbe0e4;box-shadow:0 6px 20px #182b4405;border-radius:12px;display:flex;align-items:center;margin-top:30px;max-width:485px;padding:6px 6px 6px 18px;gap:12px}.hero-search>span{font-size:25px;color:var(--muted)}.hero-search input{border:0;min-width:0;width:100%;outline:none;background:transparent;height:40px;font-size:13px}.hero-search button{border:0;border-radius:8px;padding:10px 20px;color:white;background:var(--navy);white-space:nowrap}.quick-tags{display:flex;gap:14px;font-size:11px;color:#89929d;flex-wrap:wrap;margin-top:13px}.quick-tags button{background:none;border:0;padding:0;color:#77818d;font-size:11px}.hero-art{height:345px;position:relative;background:#ebece6;border-radius:80px 20px 80px 20px;overflow:hidden;display:grid;place-items:center}.art-grid{position:absolute;inset:0;background-image:linear-gradient(#182b4407 1px,transparent 1px),linear-gradient(90deg,#182b4407 1px,transparent 1px);background-size:25px 25px;transform:rotate(-13deg) scale(1.4)}.art-calc{position:absolute;left:56px;top:43px;background:var(--navy);padding:19px;border-radius:22px;width:172px;box-shadow:10px 20px 20px #182b4420;transform:rotate(-10deg)}.art-display{background:#e2ebdd;color:var(--navy);font-size:25px;font-weight:700;text-align:right;padding:13px 9px;border-radius:8px;margin-bottom:14px;font-variant-numeric:tabular-nums}.art-keys{display:grid;grid-template-columns:repeat(4,1fr);gap:7px}.art-keys i{height:26px;border-radius:5px;background:#f9f7f0;font-style:normal;display:grid;place-items:center;font-size:12px}.art-keys i:nth-child(4n){background:var(--orange);color:white}.art-file{background:white;position:absolute;right:32px;top:58px;width:162px;padding:22px 17px;border-radius:15px;box-shadow:0 20px 25px #182b4410;transform:rotate(8deg);border:1px solid #e1e3e0}.file-corner{width:35px;height:44px;border:2px solid var(--orange);border-radius:5px;display:grid;place-items:center;color:var(--orange);font-size:10px;margin-bottom:20px}.file-lines{height:5px;background:#e8ecec;margin:8px 0;border-radius:3px}.art-pills{display:flex;gap:6px;margin-top:19px}.art-pills span{background:#f6ede5;border-radius:4px;padding:4px 7px;color:#c46e42;font-size:9px}.art-badge{position:absolute;bottom:34px;right:25px;display:flex;gap:9px;background:#fffefa;padding:11px 15px;border-radius:25px;font-size:11px;box-shadow:0 4px 12px #182b4410;transform:rotate(-4deg)}.art-circle{position:absolute;width:47px;height:47px;background:var(--orange);border-radius:50%;right:20px;top:12px;display:grid;place-items:center;color:white;font-size:24px}.proof-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;gap:38px;align-items:center;padding:19px 0;color:#697584;font-size:12px}.proof-strip span{display:flex;align-items:center;gap:8px}.proof-strip b{font-size:14px;color:var(--orange);font-weight:500}.section-head{display:flex;align-items:end;justify-content:space-between;margin:52px 0 24px;gap:20px}.section-head h2{font-size:26px;margin:8px 0 0;letter-spacing:-.05em}.section-head p{color:var(--muted);font-size:12px;margin:0}.toolbar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:26px}.chip{border:1px solid var(--line);border-radius:30px;padding:9px 17px;background:transparent;font-size:12px}.chip.active{background:var(--navy);color:white;border-color:var(--navy)}.chip small{opacity:.65;margin-left:5px;font-size:10px}.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.tool-card{position:relative;min-height:178px;background:#fffefb;border:1px solid var(--line);border-radius:var(--radius);padding:25px 25px 23px;transition:transform .15s,border-color .15s}.tool-card:hover{transform:translateY(-3px);border-color:#bbc5ce;filter:none}.tool-card .symbol{font-size:21px;color:var(--navy);width:42px;height:42px;border:1px solid #e9edee;border-radius:12px;display:grid;place-items:center;background:#f2f4f3;margin-bottom:19px}.tool-card[data-group=files] .symbol{background:#fff1e8;color:var(--orange);border-color:#f5e8de}.tool-card h3{font-size:16px;line-height:1.5;margin:0 30px 6px 0;font-weight:700}.tool-card p{font-size:12px;margin:0;color:var(--muted)}.card-arrow{position:absolute;right:25px;bottom:25px;color:#8d99a5}.card-star{position:absolute;right:19px;top:20px;background:none;border:0;font-size:21px;color:#98a3ad;padding:4px;z-index:1}.card-star[aria-pressed=true]{color:var(--orange)}.card-link:after{content:'';position:absolute;inset:0;border-radius:var(--radius)}.card-category{position:absolute;top:32px;left:80px;color:#87919b;font-size:10px}.empty{grid-column:1/-1;padding:60px 20px;background:#fffefb;border:1px dashed #cbd3da;border-radius:16px;text-align:center;color:var(--muted)}.empty button{background:none;border:0;text-decoration:underline;margin-top:12px}.bottom-banner{margin:50px 0 70px;padding:30px 38px;border-radius:18px;background:var(--navy);color:white;display:flex;align-items:center;justify-content:space-between;gap:20px}.bottom-banner h3{margin:0 0 7px;font-size:19px}.bottom-banner p{margin:0;font-size:12px;color:#c0cbd5}.bottom-banner a{font-size:12px;border-bottom:1px solid #a4b4c4;padding:5px;white-space:nowrap}footer{background:#eeefeb;border-top:1px solid #e4e6e3;padding:38px max(40px,calc((100vw - 1160px)/2)) 22px;color:#697584}.footer-top{display:flex;justify-content:space-between;gap:30px;padding-bottom:28px}.footer-brand{font-weight:800;font-size:24px;color:var(--navy)}.footer-brand span{font-size:11px;display:block;font-weight:400;margin-top:4px}.footer-top p{font-size:12px;margin:6px 0}.footer-top>div{display:flex;gap:22px;font-size:11px;align-items:flex-start;padding-top:10px}.footer-bottom{display:flex;justify-content:space-between;border-top:1px solid #dce1df;padding-top:17px;font-size:10px;letter-spacing:.02em}.breadcrumb{padding:30px 0 0;font-size:11px;color:var(--muted);display:flex;gap:9px;flex-wrap:wrap}.tool-heading{margin:32px 0;display:flex;justify-content:space-between;align-items:center;gap:15px}.tool-heading h1{font-size:34px;letter-spacing:-.05em;margin:8px 0}.tool-heading p{color:var(--muted);margin:0}.save-tool{background:white;border:1px solid var(--line);border-radius:30px;padding:9px 17px;white-space:nowrap;font-size:12px}.workspace{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}.panel{background:white;border:1px solid var(--line);border-radius:20px;padding:30px}.panel h2{font-size:17px;margin:0 0 23px}.panel .panel-num{font-size:10px;font-weight:600;letter-spacing:.1em;color:var(--orange);margin-bottom:8px}.fields{display:grid;grid-template-columns:1fr 1fr;gap:20px 18px}.field label{display:block;font-size:12px;font-weight:500;margin-bottom:8px}.input-wrap{display:flex;border:1px solid #dce2e6;border-radius:9px;overflow:hidden;background:#fdfdfc;align-items:center;min-height:47px}.input-wrap:focus-within{border-color:var(--navy);box-shadow:0 0 0 2px #182b4410}.input-wrap input,.input-wrap select{width:100%;min-width:0;border:0;background:none;padding:11px;color:var(--navy);outline:none;font-size:14px;font-variant-numeric:tabular-nums}.input-wrap span{padding-right:12px;color:var(--muted);font-size:11px;white-space:nowrap}.input-wrap input[type=date]{font-size:13px}.field-hint{font-size:11px;color:var(--muted);margin:8px 0 0}.actions{display:flex;gap:10px;margin-top:25px}.primary{background:var(--navy);border:1px solid var(--navy);color:white;padding:13px 24px;border-radius:10px;flex:1;font-weight:600}.secondary{background:white;border:1px solid #dce2e6;border-radius:10px;padding:12px 17px;font-size:12px}.calc-error{color:#b44826;font-size:12px;padding-top:12px;min-height:20px}.result-panel{background:#f0f3ef;min-height:350px;border-color:#e0e6df;position:sticky;top:110px}.result-placeholder{padding:40px 5px;color:#7b897d;text-align:center}.result-placeholder>span{display:block;margin-bottom:10px;font-size:40px;color:#a0b09e}.result-label{font-size:12px;color:#647269;margin-top:30px}.result-value{font-size:36px;line-height:1.4;font-weight:800;letter-spacing:-.05em;color:#233c30;word-break:break-word;margin:8px 0 25px;font-variant-numeric:tabular-nums}.result-rows{margin:0}.result-rows>div{border-top:1px solid #dce3db;display:flex;justify-content:space-between;gap:15px;padding:12px 0;font-size:12px}.result-rows dt{color:#68786c}.result-rows dd{margin:0;text-align:right;font-weight:600}.result-note{font-size:11px;color:#6d7b6e;padding:14px 0 0}.copy-button{margin-top:20px;background:none;border:1px solid #c5d1c5;border-radius:8px;padding:8px 16px;font-size:11px}.explanation{margin-top:25px;padding:28px 30px;border:1px solid var(--line);border-radius:18px;background:#fffefb}.explanation h2{font-size:15px;margin:0 0 12px}.explanation p{font-size:12px;color:#73808b;line-height:1.9;white-space:pre-line}.formula{font-size:12px!important;color:var(--navy)!important;background:#f0f2ef;border-radius:8px;padding:12px 16px}.source{font-size:11px;color:#697b90;text-decoration:underline}.related{margin:40px 0 65px}.related h2{font-size:18px;margin-bottom:20px}.related .tool-grid{grid-template-columns:repeat(3,1fr)}.balls-row{display:flex;gap:7px;flex-wrap:wrap;padding:8px 0}.ball{height:37px;width:37px;border-radius:50%;display:grid;place-items:center;background:var(--navy);color:white;font-size:13px}.ball:nth-child(3n){background:var(--orange)}.table-scroll{overflow:auto;margin-top:18px}table{border-collapse:collapse;width:100%;font-size:11px;white-space:nowrap}td,th{text-align:right;border-bottom:1px solid #dce3db;padding:9px 8px}th:first-child,td:first-child{text-align:left}.file-intro{font-size:11px;color:var(--muted);margin-bottom:20px}.drop-zone{border:1px dashed #bdc9d4;border-radius:15px;background:#f6f8fa;position:relative;text-align:center;padding:30px 12px;display:block;cursor:pointer}.drop-zone.drag{background:#fbeade;border-color:var(--orange)}.drop-zone input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer}.drop-zone:focus-within{outline:3px solid var(--orange);outline-offset:4px}.upload-icon{font-size:30px;display:block;color:var(--navy)}.drop-zone strong{display:block;font-size:13px;margin:8px 0}.drop-zone small{color:var(--muted);font-size:10px}.file-list{list-style:none;padding:0;margin:17px 0}.file-list li{font-size:11px;border-bottom:1px solid var(--line);padding:9px 0;display:flex;gap:8px;align-items:center}.file-list .file-name{word-break:break-all;flex:1}.file-list button{background:white;border:1px solid var(--line);border-radius:5px;padding:3px 8px}.file-list small{color:var(--muted);white-space:nowrap}.file-options{margin-top:22px}.download{display:block;background:var(--navy);color:white;padding:13px;border-radius:10px;text-align:center;font-size:12px;margin-top:20px}.preview-image{max-width:100%;max-height:220px;object-fit:contain;border-radius:9px;background:repeating-conic-gradient(#e3e7e1 0 25%,#f6f8f3 0 50%) 0/18px 18px;margin:20px auto;display:block}.info-page{max-width:800px;min-height:45vh;padding:60px 0 80px}.info-page h1{font-size:32px}.info-page h2{font-size:19px;margin-top:30px}.info-page p{color:var(--muted);line-height:1.9}.link-space{height:220px;border-top:1px solid var(--line);margin-top:30px}.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);max-width:90vw;background:var(--navy);color:white;border-radius:10px;box-shadow:0 8px 35px #182b4430;z-index:30;padding:12px 22px;font-size:12px;display:none}.toast.show{display:block}.noscript{padding:30px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
@media(min-width:1400px){.hero{padding-top:80px;padding-bottom:70px}.hero-art{height:365px}.hero h1{font-size:58px}}
@media(max-width:1100px){.header-inner{gap:22px;padding:0 25px}nav{gap:15px}nav summary{font-size:12px}.wrap{padding:0 28px}.hero{gap:30px}.hero h1{font-size:45px}.art-calc{left:25px}.art-file{right:18px;width:145px}.header-search{padding-left:15px}.fields{grid-template-columns:1fr}.footer-top>div{gap:15px}}
@media(max-width:760px){.header-inner{min-height:72px;justify-content:space-between;padding:0 20px;gap:15px}.brand{font-size:21px}.brand-mark{height:35px;width:34px;font-size:29px}.brand small{font-size:7px}.header-search{border:0;padding:0;margin-left:auto}.menu-toggle{display:block;order:3;background:none;border:1px solid var(--line);border-radius:8px;padding:6px 10px;font-size:11px}.menu-toggle span{padding-left:7px}nav{display:none;position:absolute;top:71px;left:0;right:0;background:#fffefb;max-height:80vh;overflow:auto;border-bottom:1px solid var(--line);padding:16px 22px;box-shadow:0 15px 20px #182b4410}nav.open{display:block}nav summary{padding:13px 0;font-size:14px}nav .nav-link{display:block;padding:12px 0}nav .dropdown,nav details:last-child .dropdown{position:static;width:100%;box-shadow:none;border:0;background:var(--paper);max-height:none;padding:8px;margin-bottom:8px}.wrap{padding:0 20px}.hero{padding-top:35px;padding-bottom:30px;grid-template-columns:1fr;gap:30px}.hero h1{font-size:40px;margin-top:18px;margin-bottom:17px}.hero p{font-size:13px}.hero-search{margin-top:25px;max-width:none}.hero-art{height:230px;border-radius:45px 15px;max-width:550px;width:100%;margin:auto}.art-calc{width:135px;top:17px;left:16%;padding:14px;border-radius:16px}.art-display{font-size:20px;padding:7px;margin-bottom:10px}.art-keys{gap:5px}.art-keys i{height:20px;font-size:10px}.art-file{right:14%;top:30px;width:123px;padding:15px}.file-corner{margin-bottom:12px;width:25px;height:33px;font-size:8px}.art-badge{right:5%;bottom:13px;font-size:9px;padding:8px 12px}.art-circle{width:33px;height:33px;font-size:18px;top:14px;right:9%}.file-lines{margin:6px 0}.art-pills{margin-top:12px}.art-pills span{font-size:8px;padding:3px 5px}.proof-strip{gap:12px;justify-content:space-between;font-size:10px;padding:15px 0}.proof-strip span{gap:5px}.proof-strip b{font-size:12px}.section-head{margin:35px 0 20px;align-items:start}.section-head h2{font-size:22px}.section-head p{font-size:10px}.eyebrow{font-size:9px}.toolbar{gap:7px}.chip{font-size:11px;padding:7px 12px}.tool-grid{grid-template-columns:repeat(2,1fr);gap:10px}.tool-card{min-height:174px;padding:18px 15px;border-radius:14px}.tool-card .symbol{width:35px;height:35px;font-size:18px;margin-bottom:19px}.tool-card h3{font-size:13px;margin-right:7px}.tool-card p{font-size:10px;line-height:1.7}.card-category{display:none}.card-star{right:10px;top:12px;font-size:18px}.card-arrow{right:15px;bottom:14px;font-size:12px}.bottom-banner{margin:30px 0 40px;padding:24px;align-items:start;flex-direction:column}.bottom-banner h3{font-size:16px}.bottom-banner p{font-size:11px}.footer-top{flex-wrap:wrap;gap:18px}.footer-top>p{display:none}.footer-top>div{width:100%;padding-top:0}.footer-bottom{gap:10px;flex-direction:column}footer{padding:28px 20px 22px}.breadcrumb{padding-top:20px;font-size:10px}.tool-heading{margin:25px 0}.tool-heading h1{font-size:26px}.tool-heading p{font-size:12px}.save-tool{font-size:10px;padding:7px 10px}.workspace{grid-template-columns:1fr;gap:17px}.panel{padding:23px 20px;border-radius:16px}.fields{grid-template-columns:1fr 1fr;gap:18px 12px}.result-panel{position:static;min-height:250px}.result-placeholder{padding:23px 0}.result-value{font-size:31px}.related .tool-grid{grid-template-columns:repeat(2,1fr)}.related .tool-card:last-child{display:none}.explanation{padding:22px 20px}.info-page{padding:30px 0 45px}.info-page h1{font-size:27px}.hero-search input{font-size:12px}.hero-search button{font-size:12px;padding:10px 15px}}
@media(max-width:380px){.fields{grid-template-columns:1fr}.hero h1{font-size:35px}.art-calc{left:9%}.art-file{right:9%}.proof-strip{font-size:9px;gap:6px}.tool-card h3{font-size:12px}.tool-card{padding:16px 12px}.hero-search{padding-left:11px;gap:8px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
.service-links{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px}.service-card{padding:28px;border:1px solid var(--line);border-radius:20px;background:#fffefb;display:block;transition:transform .15s}.service-card:hover{transform:translateY(-3px)}.service-icon{display:grid;place-items:center;width:52px;height:52px;font-size:32px;border-radius:15px;background:#e8efe6;color:#196550;margin-bottom:25px}.cnc-card .service-icon{background:#edf1f6;color:var(--navy)}.service-card h2{font-size:23px;margin:13px 0!important;display:flex;justify-content:space-between;gap:15px}.service-card p{font-size:12px!important}.service-card .eyebrow{font-size:9px;color:#7d8995}.service-domain{display:block;font-size:11px;color:var(--muted);letter-spacing:0;margin-top:20px}.service-open{display:block;font-size:12px;margin-top:15px;padding-top:15px;border-top:1px solid var(--line);font-weight:600}
@media(max-width:760px){.menu-toggle{min-height:44px;min-width:74px}.header-search{min-width:44px;min-height:44px;display:grid;place-items:center}.brand{min-height:44px}nav summary,nav .nav-link{min-height:48px}nav .dropdown a{min-height:44px;display:flex;align-items:center}.chip{min-height:44px}.card-star{width:44px;height:44px;right:5px;top:7px}.card-category{display:none}.save-tool{min-height:44px;min-width:94px}.primary,.secondary,.copy-button,.download{min-height:48px}.input-wrap input,.input-wrap select{font-size:16px;min-height:48px}.input-wrap input[type=date]{font-size:16px}.file-list button{min-height:44px;min-width:40px;padding:5px}.file-list{font-size:12px}.footer-top>div{flex-wrap:wrap;gap:5px 20px}.footer-top>div a{min-height:44px;display:flex;align-items:center;font-size:12px}.service-links{grid-template-columns:1fr;gap:16px}.service-card{padding:25px}.service-card h2{font-size:23px}.service-card p{font-size:13px!important}.info-page:has(.service-links){padding-bottom:45px}.tool-heading{align-items:flex-start}.fields{grid-template-columns:1fr}.result-panel{scroll-margin-top:90px}.hero-search button{min-height:44px}.quick-tags button{min-height:32px}.result-rows>div{font-size:13px}.field label{font-size:13px}}
.brand-mark{font-size:29px}
@media(max-width:400px){.header-inner{gap:8px;padding:0 12px}.brand{font-size:18px;gap:7px}.brand-mark{width:30px;height:33px;font-size:25px}.brand small{font-size:6px}.menu-toggle{min-width:65px;padding:5px 8px}}