.selfopen-main{max-width:1144px;margin:auto;padding:0 28px}.breadcrumb{display:flex;gap:12px;color:#333333;font-size:11px;padding:22px 0;border-top:1px solid var(--line)}.breadcrumb strong{color:var(--navy);font-weight:500}.selfopen-hero{text-align:center;padding:60px 20px 50px;border-radius:25px;background:radial-gradient(ellipse at 50% 0,#fff1d4,white 75%)}.selfopen-hero h1{font-size:47px;line-height:1.35}.selfopen-hero h1 em{box-shadow:none;color:#F58A00}.selfopen-hero p{color:#333333}.selfopen-hero .actions,.selfopen-bottom .actions{justify-content:center;margin:28px 0 20px;flex-wrap:wrap}.dark{background:var(--navy);color:white}.selfopen-hero>small{font-size:10px;color:#333333;display:block;line-height:1.8}.selfopen-notice{display:flex;gap:20px;background:#f1f5f9;border:1px solid #e1e8ef;border-radius:13px;padding:25px 30px;margin:25px 0 65px}.selfopen-notice>span{border:1px solid #b6c3d1;border-radius:50%;width:25px;height:25px;text-align:center;flex-shrink:0;font-weight:700}.selfopen-notice h2{font-size:17px;margin:0}.selfopen-notice p{font-size:12px;color:#333333;margin:8px 0 0}.preparation{margin-bottom:70px}.prepare-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:28px 0 22px}.prepare-grid article{padding:27px;background:#faf8f3;border:1px solid #efe7d8;border-radius:15px}.prepare-grid b{font-size:12px;color:#F58A00}.prepare-grid h3{font-size:18px}.prepare-grid p{font-size:12px;color:#333333}.procedure-list{margin:30px 0 70px;border-top:1px solid var(--line)}.procedure-list article{display:grid;grid-template-columns:45px 1fr 240px;gap:25px;align-items:center;padding:35px 0;border-bottom:1px solid var(--line)}.step-number{align-self:start;background:var(--navy);color:#ffc45a;padding:11px 0;text-align:center;border-radius:12px;font-size:17px;font-weight:800}.step-label{font-size:10px;color:#F58A00;letter-spacing:.5px;font-weight:700}.procedure-list h3{font-size:21px;margin:10px 0}.procedure-list p{font-size:13px;color:#333333;margin:0 0 15px}.procedure-list small.muted{font-size:11px}.mini-tags{display:flex;gap:7px}.mini-tags span{border-radius:5px;background:#f0f3f6;padding:6px 12px;font-size:11px}.step-visual{min-height:155px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:12px;border-radius:17px;background:#f4f6f8;padding:20px}.step-visual strong{font-size:19px;line-height:1.6;text-align:center}.step-visual small{font-size:10px;color:#333333}.network-visual{flex-direction:row;flex-wrap:wrap;gap:14px}.network-visual>span{font-size:24px;font-weight:900}.network-visual i{color:#F58A00;font-style:normal}.network-visual small{width:100%;text-align:center}.verification-icon{border-radius:50%;width:40px;height:40px;background:#ffe4aa;color:#946215;display:flex;align-items:center;justify-content:center;font-size:22px}.sample-label{font-size:10px;color:#F58A00;letter-spacing:1px}.sample-field{padding:12px 10px;border:1px solid #dce2e8;background:white;border-radius:7px;font-size:13px;letter-spacing:1px}.step-visual .sample-number{font-size:14px;letter-spacing:0}.step-visual.complete{background:var(--navy);color:white}.step-visual.complete small{color:#b8c4d3}.selfopen-help{max-width:850px;margin:0 auto 70px}.selfopen-help h2{font-size:25px}.selfopen-help details{padding:22px 0;border-bottom:1px solid var(--line)}.selfopen-help p{font-size:13px;color:#333333}.selfopen-help p a{text-decoration:underline;color:#F58A00}.selfopen-bottom{text-align:center;border-radius:20px;background:#fff5e1;padding:40px;margin:0 0 65px}.selfopen-bottom h2{font-size:29px}.selfopen-bottom p{font-size:13px;color:#333333}.selfopen-main~footer{margin-top:0}@media(max-width:640px){.selfopen-main{padding:0 20px}.selfopen-hero{padding:40px 10px 30px}.selfopen-hero h1{font-size:34px}.selfopen-hero p{font-size:12px}.selfopen-notice{padding:20px;gap:12px;margin-bottom:45px}.selfopen-notice h2{font-size:15px}.prepare-grid{grid-template-columns:1fr;gap:12px}.prepare-grid article{padding:20px}.prepare-grid h3{margin:10px 0}.prepare-grid p{margin:0}.preparation>.text-button{font-size:11px;line-height:1.8}.procedure-list article{grid-template-columns:35px 1fr;gap:16px;padding:27px 0}.procedure-list h3{font-size:18px}.procedure-list p{font-size:12px}.step-number{font-size:14px;padding:8px 0;border-radius:9px}.step-visual{grid-column:2;min-height:130px}.selfopen-bottom{padding:30px 18px}.selfopen-bottom h2{font-size:25px}.selfopen-bottom .button{font-size:11px}.selfopen-help h2{font-size:22px}}


button[data-open-network="KT"]{background:#1671e8!important;color:#fff!important;border:0;border-radius:12px;font-weight:800;padding:16px 24px;min-height:51px;gap:7px}button[data-open-network="KT"]::before{content:'';width:10px;height:10px;background:#a8d9ff;border-radius:50%;flex-shrink:0}button[data-open-network="LG U+"]{background:#ed168b!important;color:#fff!important;border:0;border-radius:12px;font-weight:800;padding:16px 24px;min-height:51px}button[data-open-network="KT"]:hover{background:#0f62ce!important}button[data-open-network="LG U+"]:hover{background:#d90b7c!important}
button.button.primary[data-open-network="KT"],button.button.dark[data-open-network="LG U+"]{color:#fff!important}button[data-open-network="KT"]::before{content:none;display:none}

.procedure-list .step-label{display:inline-block;font-size:18px;font-weight:800;line-height:1.5;letter-spacing:-.025em;color:#F58A00}@media(max-width:640px){.procedure-list .step-label{font-size:16px}}
/* Compact self-activation procedure with stronger headings. */
.opening-procedure>.eyebrow{margin-bottom:10px}.opening-procedure>h2{font-size:35px;line-height:1.3;margin-bottom:10px}.opening-procedure>.muted{line-height:1.6;margin-top:0;margin-bottom:17px}.procedure-list{margin-top:18px;margin-bottom:42px}.procedure-list article{padding-top:22px;padding-bottom:22px;row-gap:15px}.procedure-list h3{font-size:24px;line-height:1.35;margin-top:7px;margin-bottom:8px}.procedure-list p{line-height:1.6;margin-bottom:9px}.procedure-list .step-visual{min-height:125px;padding:16px;gap:8px}.procedure-list .step-visual strong{line-height:1.4}.procedure-list .step-label{line-height:1.35}@media(max-width:640px){.opening-procedure>h2{font-size:28px}.procedure-list article{padding-top:19px;padding-bottom:19px;row-gap:12px}.procedure-list h3{font-size:21px;margin-top:6px;margin-bottom:7px}.procedure-list .step-visual{min-height:105px;padding:14px}.procedure-list{margin-bottom:32px}}
.prepare-grid article>b{display:block;font-size:28px;font-weight:800;line-height:1.3;color:#F58A00}.prepare-grid article>h3{font-size:23px;font-weight:800;line-height:1.4;margin-top:15px;margin-bottom:12px}@media(max-width:640px){.prepare-grid article>b{font-size:25px}.prepare-grid article>h3{font-size:21px;margin-top:12px;margin-bottom:10px}}
.preparation>.eyebrow,.opening-procedure>.eyebrow{display:block;text-align:left;padding-left:0;margin-left:0;margin-bottom:7px;line-height:1.4}.preparation>h2,.opening-procedure>h2{padding-left:0;margin-left:0;margin-top:0;line-height:1.25;letter-spacing:-.055em}.preparation,.opening-procedure{padding-left:0;padding-right:0}
.selfopen-hero{position:relative;isolation:isolate;overflow:hidden;background:#fff}.selfopen-hero::before{content:'';position:absolute;inset:0;z-index:-1;background:url("assets/activation-wave-selected.png") center top/100% 100% no-repeat;opacity:.75;pointer-events:none}@media(max-width:640px){.selfopen-hero::before{background-size:100% 100%;background-position:center top}}