:root{--ink:#142f2d;--muted:#536966;--paper:#f5fbfa;--panel:#e4f3f0;--teal:#3f7773;--mint:#73aaa5;--line:#b9d6d1;--white:#fff;--excel:#1f6f54;--access:#9e3356;font-family:Pretendard,"Noto Sans KR",ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;font-size:16px;line-height:1.7;background:linear-gradient(90deg,transparent 47px,rgba(63,119,115,.055) 48px),linear-gradient(transparent 47px,rgba(63,119,115,.055) 48px),var(--paper);background-size:48px 48px;word-break:keep-all;overflow-wrap:break-word}a,code{overflow-wrap:anywhere}img{max-width:100%;height:auto}.hero{min-height:100vh;display:grid;grid-template-columns:minmax(0,1fr) 300px 290px;align-items:center;gap:clamp(2rem,5vw,5rem);padding:4rem clamp(1.25rem,7vw,7rem);background:rgba(245,251,250,.92)}.eyebrow{margin:0 0 1rem;color:var(--teal);font-size:.86rem;font-weight:900;letter-spacing:.12em}.hero h1{margin:0 0 1.5rem;font-size:clamp(3rem,6vw,6.4rem);line-height:1.08;letter-spacing:-.055em}.hero h1 span{color:var(--teal)}.lede{max-width:42rem;color:var(--muted);font-size:1.2rem}.store-row{display:flex;align-items:center;flex-wrap:wrap;gap:.75rem;margin-top:2rem}.store-row a{display:flex;min-height:58px}.store-row img{height:58px;width:auto}.exam-grid{display:grid;border:1px solid var(--line);background:var(--white);box-shadow:16px 16px 0 var(--panel)}.exam-grid article{display:grid;gap:.35rem;padding:1.35rem;border-bottom:1px solid var(--line)}.exam-grid article:last-child{border:0}.exam-grid b{color:var(--teal);font-size:.78rem}.exam-grid strong{font-size:1.2rem}.exam-grid span{color:var(--muted);font-size:.9rem}.hero figure{margin:0;padding:10px;border-radius:2rem;background:var(--ink);box-shadow:0 28px 70px rgba(20,47,45,.22);transform:rotate(1.5deg)}.hero figure img{display:block;border-radius:1.55rem}@media(max-width:980px){.hero{grid-template-columns:1fr}.exam-grid{grid-template-columns:repeat(3,1fr)}.exam-grid article{border-bottom:0;border-right:1px solid var(--line)}.hero figure{width:290px;justify-self:center}}@media(max-width:650px){.hero{padding:3rem 1.2rem}.hero h1{font-size:clamp(2.7rem,13vw,4rem)}.exam-grid{grid-template-columns:1fr}.exam-grid article{border-right:0;border-bottom:1px solid var(--line)}.store-row img{height:50px}}
.skip{position:fixed;top:-5rem;left:1rem;z-index:20;padding:.75rem 1rem;background:var(--ink);color:#fff}.skip:focus{top:1rem}:focus-visible{outline:3px solid #f2b84b;outline-offset:4px}.page-shell{max-width:1500px;margin:auto;overflow:hidden}.site-header{min-height:90px;display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:2rem;padding:1rem clamp(1.2rem,5vw,5rem);background:rgba(245,251,250,.96);border-bottom:1px solid var(--line)}.brand{display:inline-flex;align-items:center;gap:.8rem;text-decoration:none;font-size:.8rem;line-height:1.2}.brand img{border-radius:.8rem}.brand strong{color:var(--teal);font-size:1rem}.site-header nav,footer nav{display:flex;gap:1.4rem;flex-wrap:wrap}.site-header nav a,footer nav a,.language{text-decoration:none;font-weight:800;font-size:.88rem}.language{padding:.4rem .7rem;border:1px solid var(--line);color:var(--teal)}.data-ribbon{display:grid;grid-template-columns:repeat(4,1fr);color:#fff;background:var(--ink);border-top:5px solid var(--mint)}.data-ribbon span{padding:1rem;text-align:center;border-right:1px solid #315653;font-size:.78rem;font-weight:800;letter-spacing:.11em}.section{padding:clamp(5rem,9vw,9rem) clamp(1.2rem,7vw,7rem)}.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(3rem,8vw,8rem);align-items:start}.section h2,.page-intro h1{margin:0 0 1.5rem;font-size:clamp(2.4rem,5vw,4.8rem);line-height:1.12;letter-spacing:-.045em}.section p{color:var(--muted)}.text-link{display:inline-block;margin-top:1rem;color:var(--teal);font-weight:900;text-decoration-thickness:2px}.workflow{border:1px solid var(--line);background:var(--white);box-shadow:16px 16px 0 var(--panel)}.workflow div{display:grid;grid-template-columns:55px 1fr;gap:1rem;padding:1.25rem;border-bottom:1px solid var(--line)}.workflow div:last-child{border:0}.workflow b{color:var(--teal)}.workflow span{font-weight:800}.app-preview{background:#dfeeea}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:3rem;margin-bottom:3rem}.section-heading>p{max-width:32rem}.screens{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(1rem,3vw,2.3rem);align-items:start}.screens figure{margin:0}.screens img{display:block;border-radius:1.2rem;box-shadow:0 20px 45px rgba(20,47,45,.15)}.screens figure:nth-child(2){transform:translateY(2rem)}.screens figcaption{margin-top:1rem;color:var(--muted);font-size:.92rem}.guide-preview{background:#edf7f5}.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}.guide-card{display:block;min-height:235px;padding:1.6rem;background:var(--white);text-decoration:none;transition:background .18s,transform .18s}.guide-card:hover{background:#f0faf8;transform:translateY(-2px)}.guide-card span{color:var(--teal);font-size:.75rem;font-weight:900;letter-spacing:.08em}.guide-card h2,.guide-card h3{margin:1rem 0 .75rem;font-size:1.35rem;line-height:1.3;letter-spacing:-.025em}.guide-card p{color:var(--muted);font-size:.94rem}.final-cta{padding:clamp(4rem,9vw,8rem) max(1.2rem,calc((100vw - 1200px)/2));color:#fff;background:var(--ink);border-top:8px solid var(--mint)}.final-cta h2{max-width:800px;font-size:clamp(2.4rem,5vw,4.7rem);line-height:1.15;letter-spacing:-.04em}.final-cta .eyebrow{color:#a9d5cf}.final-cta .store-row{margin-top:1rem}.page-intro{max-width:1120px;padding:clamp(5rem,10vw,9rem) clamp(1.2rem,9vw,9rem) 4rem}.page-intro>p{max-width:50rem;color:var(--muted);font-size:1.16rem}.all-guides{margin:0 clamp(1.2rem,7vw,7rem) 5rem}.official-source{margin:4rem 0 0;padding:2rem;background:#edf7f5;border-left:5px solid var(--teal)}.all-guides+.official-source,.faq-list+.official-source{margin:0 clamp(1.2rem,7vw,7rem) 7rem}.official-source div{display:flex;gap:1rem 2rem;flex-wrap:wrap}.official-source a{color:var(--teal);font-weight:850}.article{padding:3rem clamp(1.2rem,8vw,8rem) 7rem}.breadcrumbs{display:flex;gap:.55rem;flex-wrap:wrap;margin-bottom:4rem;color:var(--muted);font-size:.85rem}.article>header{max-width:1000px}.article>header h1{margin:0 0 1.5rem;font-size:clamp(2.7rem,6vw,5.3rem);line-height:1.12;letter-spacing:-.045em}.article-layout{display:grid;grid-template-columns:minmax(0,760px) minmax(240px,320px);gap:clamp(3rem,8vw,8rem);align-items:start;margin-top:4rem}.article-copy{font-size:1.08rem}.article-copy h2,.policy h2{margin:3rem 0 1rem;font-size:1.75rem;line-height:1.3}.article-copy p{color:#334b48}.cell-note{display:grid;grid-template-columns:repeat(3,1fr);margin:3rem 0;border:1px solid var(--line);background:var(--white)}.cell-note>*{padding:1rem;border-right:1px solid var(--line)}.cell-note>*:last-child{border:0}.article-aside{position:sticky;top:2rem;padding:1.5rem;background:var(--white);border:1px solid var(--line);box-shadow:12px 12px 0 var(--panel)}.article-aside img{border-radius:1rem}.article-aside h2{margin:1.2rem 0 .6rem;font-size:1.4rem}.article-aside .store-row{gap:.3rem;margin-top:.7rem}.article-aside .store-row img{height:43px}.article-aside .eyebrow{display:none}.related{margin-top:7rem}.related .guide-card{min-height:150px}.faq-list{max-width:1000px;padding:0 clamp(1.2rem,9vw,9rem) 5rem}.faq-list details{padding:1.4rem 0;border-top:1px solid var(--line)}.faq-list summary{cursor:pointer;font-size:1.15rem;font-weight:850}.faq-list p{max-width:50rem;color:var(--muted)}.policy{max-width:900px;margin:auto;padding:clamp(5rem,9vw,9rem) clamp(1.2rem,5vw,4rem) 8rem}.policy h1{font-size:clamp(3rem,7vw,5.4rem);line-height:1.12;letter-spacing:-.045em}.policy p{color:#405653}.primary-button{display:inline-block;margin-top:1rem;padding:.9rem 1.25rem;color:#fff;background:var(--teal);font-weight:850;text-decoration:none}.support-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin:0 clamp(1.2rem,7vw,7rem) 8rem;background:var(--line);border:1px solid var(--line)}.support-grid>div{padding:1.5rem;background:var(--white)}.support-grid h2{font-size:1.25rem}.support-grid p{color:var(--muted)}.support-grid .store-row img{height:46px}.contact-email{display:inline-block;color:var(--teal);font-size:clamp(1.2rem,3vw,2rem);font-weight:850;overflow-wrap:anywhere}footer{display:grid;grid-template-columns:1fr auto;gap:2rem;margin:0 clamp(1.2rem,5vw,5rem);padding:3rem 0;border-top:1px solid var(--line);color:var(--muted)}footer strong{color:var(--ink)}footer p{max-width:40rem;margin:.35rem 0}footer .source-note{grid-column:1/-1}.source-note,.article-meta{font-size:.84rem;color:var(--muted)}

/* store-badge-frame-sync: keep marketplace badges aligned without distorting official artwork */
.store-row>a{width:194px;height:75px;min-width:194px;min-height:75px;flex:0 0 194px;align-items:center;justify-content:center}
.store-row>a img,.article-aside .store-row>a img,.support-grid .store-row>a img{width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain}
.store-row>a img[src*="google-play"]{width:194px;height:75px}
.store-row>a img[src*="app-store"]{width:180px;height:60px}
@media(max-width:420px){.store-row>a{max-width:100%}}
@media(max-width:980px){.site-header{grid-template-columns:1fr auto}.language{grid-column:1/-1;width:max-content}.split,.article-layout{grid-template-columns:1fr}.guide-grid,.support-grid{grid-template-columns:1fr 1fr}.article-aside{position:static}.data-ribbon{grid-template-columns:1fr 1fr}.hero{min-height:auto}.hero figure{width:290px}.exam-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:650px){.site-header{display:flex;align-items:flex-start;flex-wrap:wrap;gap:1rem}.site-header nav{margin-left:auto;justify-content:flex-end;gap:.6rem 1rem}.site-header nav a{font-size:.78rem}.language{width:auto}.hero{padding:3rem 1.2rem}.hero h1{font-size:clamp(2.7rem,13vw,4rem)}.exam-grid,.guide-grid,.support-grid{grid-template-columns:1fr}.exam-grid article{border-right:0;border-bottom:1px solid var(--line)}.section-heading{align-items:flex-start;flex-direction:column;gap:1rem}.screens{grid-auto-flow:column;grid-auto-columns:82%;overflow-x:auto;scroll-snap-type:x mandatory;padding:1rem 0 2rem}.screens figure,.screens figure:nth-child(2){transform:none;scroll-snap-align:center}.cell-note{grid-template-columns:1fr}.cell-note>*{border-right:0;border-bottom:1px solid var(--line)}footer{grid-template-columns:1fr}footer .source-note{grid-column:1}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}