:root{--ink:#24282c;--muted:#697078;--red:#ef2051;--pink:#fff0f3;--line:#e9e8e5;--paper:#faf9f6}
*{box-sizing:border-box}body{margin:0;color:var(--ink);background:white;font-family:-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR",sans-serif;line-height:1.6;word-break:keep-all}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #197cb8;outline-offset:4px}[hidden]{display:none!important}.wrap{max-width:1120px;margin:auto;padding:0 28px}.skip{position:absolute;top:-100px}.skip:focus{top:0;background:white;z-index:5}.header{border-bottom:1px solid 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var(--line);border-radius:12px;overflow:hidden}.photo{height:160px;background:#f4f5f4;overflow:hidden;display:flex;align-items:center;justify-content:center}.photo.kt img{height:100%;width:100%;object-fit:cover;object-position:83% center}.photo.lg img{height:138px;width:auto;object-fit:contain}.usim figcaption{padding:12px;font-size:13px}.usim figcaption b{display:block;font-size:15px}.usim figure{margin:0}.network{font-size:11px;color:var(--muted)}.ready{display:block;text-align:center;padding:16px 12px;border-radius:12px;background:var(--red);color:white;font-weight:750}.section{padding-top:62px;padding-bottom:62px}.section-top{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}.section h2{font-size:29px;line-height:1.4;letter-spacing:-1px;margin:0}.section .kicker{font-size:12px;color:var(--red);font-weight:750;margin:0 0 8px}.text-link{font-size:14px;color:var(--muted);white-space:nowrap}.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.plan{border:1px solid var(--line);border-radius:16px;padding:24px;display:flex;flex-direction:column}.plan .tag{font-size:12px;color:var(--muted);margin-bottom:15px}.plan h3{font-size:20px;margin:0 0 5px;letter-spacing:-.5px}.plan .amount{font-size:27px;font-weight:800;letter-spacing:-1px;margin:13px 0 18px}.amount small{font-size:13px;font-weight:400;color:var(--muted);letter-spacing:0}.plan ul{list-style:none;margin:0 0 22px;padding:0;color:#596169;font-size:14px}.plan li+li{margin-top:5px}.plan a{margin-top:auto;border-top:1px solid var(--line);padding-top:15px;font-size:14px;font-weight:650}.plan a:hover{color:var(--red)}.fine{font-size:12px;color:var(--muted);margin:16px 0 0}.guide-band{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:35px;margin-top:28px}.step-num{font-size:12px;color:var(--red);font-weight:800}.steps h3{font-size:18px;margin:7px 0}.steps p{font-size:14px;color:var(--muted);margin:0}.faq-grid{display:grid;grid-template-columns:.65fr 1fr;gap:65px}.faq details{border-bottom:1px solid var(--line);padding:18px 0}.faq details:first-child{padding-top:0}.faq summary{cursor:pointer;font-weight:650;font-size:15px}.faq details p{font-size:14px;color:var(--muted);margin:12px 0 0}.footer{border-top:1px solid var(--line);padding:28px 0;font-size:12px;color:var(--muted)}.footer strong{color:var(--ink);font-size:14px}.footer p{margin:8px 0 0}.footer a{text-decoration:underline}.mobile-cta{display:none}
@media(max-width:900px){.menu{gap:16px;font-size:13px}.contact{display:none}.hero-inner{gap:28px}.hero h1{font-size:36px}.wordmark{width:204px}.store{width:56px}}
@media(max-width:680px){.wrap{padding-left:20px;padding-right:20px}.header-inner{flex-wrap:wrap;gap:0;justify-content:center;padding-top:2px;padding-bottom:14px}.brand{gap:12px}.wordmark{width:210px;height:76px}.store{height:64px;width:56px}.menu{width:100%;justify-content:space-between;font-size:12px;gap:8px}.hero-inner{display:block;padding-top:32px;padding-bottom:30px}.hero h1{font-size:34px;letter-spacing:-1.5px;margin-bottom:12px}.eyebrow{margin-bottom:10px;font-size:11px}.intro{font-size:14px;line-height:1.7}.hero-note{display:none}.wizard{margin-top:25px;padding:23px 20px;min-height:0;border-radius:18px}.wizard-top{margin-bottom:17px}.wizard h2{font-size:23px}.helper{font-size:13px;margin-bottom:18px}.choice{padding:15px 16px}.support{font-size:11px}.section{padding-top:38px;padding-bottom:38px}.section h2{font-size:24px}.section-top{gap:12px}.text-link{font-size:12px}.plans{grid-template-columns:1fr;gap:12px}.plan{padding:21px}.plan .amount{margin:8px 0 12px}.plan ul{margin-bottom:15px}.steps{grid-template-columns:1fr;gap:24px}.faq-grid{grid-template-columns:1fr;gap:24px}.footer{padding-bottom:100px}.mobile-cta{display:flex;position:fixed;bottom:0;left:0;right:0;background:#fffffff5;border-top:1px solid var(--line);padding:10px 16px calc(10px + env(safe-area-inset-bottom));gap:10px;z-index:4}.mobile-cta a{background:var(--red);color:white;border-radius:10px;text-align:center;padding:12px;width:100%;font-size:14px;font-weight:700}.photo{height:145px}.photo.lg img{height:125px}.usim figcaption{padding:9px}.usim figcaption b{font-size:13px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

.certificate-logos{list-style:none;margin:18px 0 24px;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}.certificate-logos li{display:flex;flex-direction:column;align-items:center;gap:7px;min-width:0}.certificate-logos img{width:48px;height:48px;object-fit:contain;border-radius:12px}.certificate-logos span{font-size:12px;font-weight:650;color:#555d65}.sim-examples{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:0 0 20px}.sim-examples figure{margin:0;text-align:center}.sim-examples img{width:100%;height:110px;object-fit:contain}.sim-examples figcaption{font-size:12px;font-weight:650;margin-top:5px}.photo.kt,.photo.lg{height:230px;background:#fff;padding:10px}.photo.kt img,.photo.lg img{width:100%;height:100%;object-fit:contain;object-position:center}
@media(max-width:680px){.certificate-logos{gap:8px;margin:17px 0 22px}.certificate-logos img{width:42px;height:42px;border-radius:10px}.certificate-logos span{font-size:11px}.auth-choices{grid-template-columns:1fr 1fr;gap:10px}.auth-choices .choice{padding:16px 10px;justify-content:center;text-align:center;min-height:94px}.auth-choices .arrow{display:none}.auth-choices .choice small{font-size:11px;margin-top:7px}.photo.kt,.photo.lg{height:195px;padding:7px}.sim-examples img{height:100px}}
.purchase-stores{margin-top:12px;padding-top:10px;border-top:1px solid var(--line)}.purchase-stores>span{font-size:11px;color:var(--muted)}.purchase-stores ul{list-style:none;margin:8px 0 0;padding:0;display:grid;gap:7px}.purchase-stores li{display:flex;align-items:center;gap:8px;min-width:0;font-size:12px;color:var(--ink);line-height:1.4}.store-logo{display:flex;align-items:center;justify-content:center;flex:0 0 42px;width:42px;height:38px;overflow:hidden;background:#fff;border:1px solid #edf0f2;border-radius:7px}.store-logo img{display:block;width:100%;height:100%;object-fit:contain}.store-logo img.roomy{transform:scale(1.65)}@media(max-width:680px){.purchase-stores li{gap:6px;font-size:11px}.store-logo{flex-basis:36px;width:36px;height:34px}}

.menu a[aria-current=page]{color:var(--red);text-decoration:underline;text-underline-offset:8px}
.page-head{background:var(--paper);border-bottom:1px solid var(--line);padding:28px 0 42px}.breadcrumbs{display:flex;gap:10px;align-items:center;font-size:12px;color:var(--muted);margin-bottom:24px}.breadcrumbs a{text-decoration:underline;text-underline-offset:3px}.page-head h1{font-size:42px;letter-spacing:-1.6px;line-height:1.3;margin:8px 0 14px}.page-head p{max-width:710px;color:var(--muted);margin:0}.page-head .eyebrow{color:var(--red)}
.reading{max-width:880px}.editorial{display:grid;grid-template-columns:240px minmax(0,1fr);gap:60px}.editorial h2{font-size:26px;letter-spacing:-.7px;margin:0}.editorial h3{font-size:18px;margin:24px 0 8px}.editorial p{color:var(--muted);margin:0 0 16px}.editorial a,.source-note a{color:var(--red);text-decoration:underline;text-underline-offset:3px}.text-list{padding-left:20px;color:var(--muted)}.text-list li{margin:12px 0}.cta-panel{padding:28px;background:var(--pink);border-radius:18px;margin:30px 0}.cta-panel h2{font-size:23px;margin:0 0 10px}.cta-panel p{color:var(--muted);font-size:14px}.cta-panel .ready{max-width:350px}.related{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}.related a{padding:12px 18px;border:1px solid var(--line);border-radius:9px;font-size:14px}.related a:hover{background:var(--pink)}.footer-links{display:flex;flex-wrap:wrap;gap:10px 22px;margin-bottom:18px}.wide-usims{gap:24px}.wide-usims .photo.kt,.wide-usims .photo.lg{height:300px;padding:22px}.wide-usims figcaption{padding:20px}.wide-usims figcaption b{font-size:20px}.wide-usims .purchase-stores ul{grid-template-columns:1fr 1fr;gap:14px}.wide-usims .purchase-stores li{font-size:13px}.wide-usims .store-logo{width:48px;height:42px;flex-basis:48px}.source-note{font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding-top:18px;margin-top:24px}.faq-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:60px}.faq-nav{display:flex;flex-direction:column;align-items:flex-start;gap:12px}.faq-nav a{padding:10px 16px;background:var(--paper);border-radius:9px;font-size:14px}.faq-group{margin-bottom:42px;scroll-margin-top:20px}.faq-group h2{font-size:25px;margin:0 0 16px}.faq-group details{border-bottom:1px solid var(--line);padding:18px 0}.faq-group summary{cursor:pointer;font-size:16px;font-weight:650;line-height:1.6}.faq-group summary::marker{color:var(--red)}.faq-group details p{color:var(--muted);font-size:14px;margin:12px 0 4px;line-height:1.9}.faq-group details a{color:var(--red);text-decoration:underline}.network-tag{display:inline-block;font-size:10px;letter-spacing:.03em;color:#5a626b;border:1px solid var(--line);border-radius:5px;padding:2px 6px;margin-right:7px;vertical-align:2px}.faq-group .source-link{font-size:11px;color:var(--muted)}
@media(max-width:1000px) and (min-width:681px){.header-inner{flex-wrap:wrap;justify-content:center;padding-bottom:18px;gap:0}.menu{width:100%;justify-content:center;gap:24px}.hero-inner{gap:26px}.hero-inner>*{min-width:0}}
@media(max-width:680px){.page-head{padding:22px 0 30px}.page-head h1{font-size:30px;letter-spacing:-1px}.page-head p{font-size:14px}.breadcrumbs{margin-bottom:20px}.editorial,.faq-layout{grid-template-columns:1fr;gap:24px}.editorial h2{font-size:23px}.wide-usims{gap:12px}.wide-usims .photo.kt,.wide-usims .photo.lg{height:195px;padding:7px}.wide-usims figcaption{padding:10px}.wide-usims figcaption b{font-size:14px}.wide-usims .purchase-stores ul{grid-template-columns:1fr;gap:8px}.wide-usims .store-logo{width:36px;height:34px;flex-basis:36px}.wide-usims .purchase-stores li{font-size:11px}.faq-nav{flex-direction:row;flex-wrap:wrap;gap:7px}.faq-nav a{font-size:12px;padding:9px 12px}.faq-group summary{font-size:15px}.cta-panel{padding:22px}.related a{flex:1;text-align:center;padding:12px}.hero h1{font-size:32px}}