.shell{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans KR",Arial,sans-serif;color:var(--ink, #333333);font-size:17px;font-weight:400;line-height:1.7;word-break:keep-all;overflow-wrap:break-word}
.shell *{box-sizing:border-box}
.shell a{color:var(--main-color, #000b25)}
.shell a:hover{text-decoration-thickness:2px}
.shell code, .shell pre{font-family:ui-monospace,SFMono-Regular,Consolas,monospace}
.shell code{overflow-wrap:anywhere}
.shell{max-width:1320px;margin:auto;padding:0 24px 72px}
.shell .topbar{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:17px 0;border-bottom:1px solid #dfe5ee}
.shell .brand{font-weight:600;letter-spacing:.02em;color:var(--main-color, #000b25);text-decoration:none}
.shell .toplinks{display:flex;flex-wrap:wrap;gap:18px;font-size:16px}
.shell .hero{padding:38px 0 28px}
.shell .eyebrow{font-size:14px;font-weight:600;letter-spacing:.02em;color:#805b00;text-transform:uppercase}
.shell .hero h1{font-size:clamp(28px,3vw,36px);color:var(--main-color, #000b25);line-height:1.4;letter-spacing:-.025em;margin:10px 0}
.shell .lead{max-width:780px;color:#64748b;font-size:18px;margin:0}
.shell .layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:28px;align-items:start}
.shell .sidebar{position:sticky;top:90px;background:transparent;border:0;border-right:1px solid #dfe5ee;border-radius:0;padding:8px 20px 8px 0}
.shell .sidebar strong{display:block;margin-bottom:12px;font-size:15px;color:#64748b}
.shell .sidebar a{display:block;padding:9px 10px;border-radius:7px;text-decoration:none;color:var(--main-color, #000b25);font-size:16px}
.shell .sidebar a:hover, .shell .sidebar a:focus-visible{background:#fff8e7;color:var(--main-color, #000b25)}
.shell .content{min-width:0}
.shell .panel{background:transparent;border:0;border-bottom:1px solid #dfe5ee;border-radius:0;box-shadow:none;padding:32px 0;margin:0;scroll-margin-top:90px}
.shell .panel:first-child{padding-top:12px}
.shell .panel:last-child{border-bottom:0}
.shell .panel h2{font-size:26px;color:var(--main-color, #000b25);letter-spacing:-.025em;line-height:1.5;margin:0 0 12px}
.shell .panel h3{font-size:20px;color:var(--main-color, #000b25);margin:24px 0 9px}
.shell .panel p{margin:8px 0 13px}
.shell .muted{color:#64748b}
.shell .callout{border-left:3px solid var(--primary, #ffb400);background:transparent;padding:4px 0 4px 16px;margin:20px 0;border-radius:0;color:#64748b}
.shell .callout strong{display:block}
.shell .callout.ok{border-left-color:var(--primary, #ffb400)}
.shell .callout.blue{border-left-color:var(--primary, #ffb400)}
.shell .base-url{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:18px 0}
.shell .base-url code{display:block;padding:12px 16px;background:var(--main-color, #000b25);color:#fff;border-radius:7px;font-size:16px;font-weight:600}
.shell .flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin:24px 0;padding:24px;background:#f7f9fc;border:1px solid #dfe5ee;border-radius:10px}
.shell .flow>div{background:transparent;border:0;border-radius:0;padding:0;min-width:0}
.shell .flow .n{font-size:14px;font-weight:500;color:#805b00}
.shell .flow b{display:block;margin:4px 0}
.shell .flow small{color:#64748b}
.shell .cards{display:grid;grid-template-columns:1fr;gap:0;margin:20px 0 12px;border-top:1px solid #e8edf3}
.shell .card{display:grid;grid-template-columns:minmax(200px,280px) minmax(0,1fr) auto;gap:8px 24px;align-items:center;border:0;border-bottom:1px solid #e8edf3;border-radius:0;background:transparent;box-shadow:none;padding:22px 0;min-width:0}
.shell .card:has(>.badge){grid-template-rows:auto auto}
.shell .card>.badge{grid-column:1;grid-row:1;justify-self:start;margin:0;padding:4px 10px;line-height:1.5;border-radius:6px;background:#fff3cc}
.shell .card:has(>.badge)>h3{grid-column:1;grid-row:2}
.shell .card:has(>.badge)>p{grid-column:2;grid-row:1 / 3}
.shell .card:has(>.badge)>.button{grid-column:3;grid-row:1 / 3}
.shell .card>h3,.shell .card>p{margin:0}
.shell .card>.button{justify-self:end;white-space:nowrap}
.shell .card h3{margin:0 0 6px}
.shell .card p{color:#64748b}
.shell .button{display:inline-flex;align-items:center;justify-content:center;min-height:42px;text-decoration:none;background:#fff;color:var(--ink, #333333);border:1px solid var(--line, #d6d9df);padding:10px 16px;border-radius:6px;font:inherit;font-size:16px;font-weight:600;line-height:1.5}
.shell .button:hover{background:#f8fafc;color:var(--ink, #333333);border-color:#94a3b8}
.shell .button.secondary{background:#fff;color:var(--ink, #333333)}
.shell .button.secondary:hover{background:#f8fafc}
.shell .table-wrap{overflow-x:auto;max-width:100%;border:1px solid #dfe5ee;border-radius:8px}
.shell table{width:100%;border-collapse:collapse;min-width:600px}
.shell th, .shell td{padding:11px 13px;vertical-align:top;text-align:left;border-bottom:1px solid #e3eaf0}
.shell tr:last-child td{border-bottom:0}
.shell th{background:#f7f9fc;color:#64748b;font-size:15px;white-space:nowrap}
.shell td:first-child{font-weight:400;white-space:normal}
.shell .step-list{list-style:none;margin:16px 0;padding:0;counter-reset:guide}
.shell .step-list li{counter-increment:guide;position:relative;padding:0 0 18px 45px;margin-bottom:13px;border-bottom:1px solid #e9eef2}
.shell .step-list li:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.shell .step-list li:before{content:counter(guide);position:absolute;left:0;top:0;background:var(--main-color, #000b25);color:var(--primary, #ffb400);font-size:15px;font-weight:600;width:29px;height:29px;border-radius:7px;display:grid;place-items:center}
.shell .step-list b{display:block}
.shell .code-head{display:flex;justify-content:space-between;gap:8px 12px;flex-wrap:wrap;align-items:center;margin:20px 0 0;padding:9px 13px;background:#111827;color:#fff;border-radius:8px 8px 0 0;font-size:15px}
.shell .code-head span:last-child{opacity:.8}
.shell pre{max-width:100%;overflow:auto;white-space:pre;background:var(--main-color, #000b25);color:#f1f5f9;padding:17px;border-radius:0 0 8px 8px;margin:0 0 14px;font-size:15px;line-height:1.55}
.shell .badge{display:inline-block;background:#fff3cc;color:#805b00;border-radius:999px;padding:2px 8px;font-size:14px;font-weight:600}
.shell .badge.gray{background:#eef0f2;color:#64748b}
.shell .compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.shell .compare .card{background:#fbfcfd}
.shell .section-note{font-size:16px;color:#64748b}
.shell .footer{color:#64748b;font-size:15px;padding:20px 0}
.shell .mobile-nav{display:none}
.shell summary{cursor:pointer;font-weight:600}
.shell details{border:1px solid #dfe5ee;border-radius:8px;padding:12px 14px;margin:12px 0}
.shell details[open] summary{margin-bottom:10px}
@media(max-width:920px){
.shell .layout{grid-template-columns:1fr}
.shell .sidebar{display:none}
.shell .mobile-nav{display:block;background:#fff;border:1px solid #dfe5ee;border-radius:10px;padding:11px 14px;margin-bottom:16px}
.shell .mobile-nav a{display:block;padding:8px 0}
.shell .flow{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){
.shell{padding:0 14px 44px}
.shell .topbar{align-items:flex-start}
.shell .toplinks{gap:8px;font-size:16px}
.shell .hero{padding:27px 0 18px}
.shell .lead{font-size:18px}
.shell .panel{padding:26px 0}
.shell .flow, .shell .cards, .shell .compare{grid-template-columns:1fr}
.shell .base-url code{font-size:16px}
.shell .code-head{font-size:15px}
.shell pre{padding:13px;font-size:15px}}
.shell .scroll-hint{display:none}
@media(max-width:700px){
.shell .scroll-hint{display:block;color:#64748b;font-size:14px;margin:14px 0 6px!important}
.shell pre{scrollbar-width:thin}}/* Keep API tables aligned and scroll them inside their own region on narrow screens. */
.shell .table-wrap{margin:14px 0 20px;overscroll-behavior-x:contain;scrollbar-width:thin}
.shell .table-wrap table{table-layout:fixed;min-width:0}
.shell .table-wrap th, .shell .table-wrap td{padding:12px 16px;line-height:1.55;word-break:keep-all;overflow-wrap:break-word}
.shell .table-wrap td:first-child{white-space:normal}
.shell .table-wrap table.docs-table--2{min-width:560px}
.shell .table-wrap table.docs-table--2 th:first-child, .shell .table-wrap table.docs-table--2 td:first-child{width:34%}
.shell .table-wrap table.docs-table--3{min-width:760px}
.shell .table-wrap table.docs-table--3 th:first-child, .shell .table-wrap table.docs-table--3 td:first-child{width:23%}
.shell .table-wrap table.docs-table--3 th:nth-child(2), .shell .table-wrap table.docs-table--3 td:nth-child(2){width:35%}
.shell .table-wrap table.docs-table--3 th:last-child, .shell .table-wrap table.docs-table--3 td:last-child{width:42%}
.shell .table-wrap table.docs-table--4{min-width:900px}
.shell .table-wrap table.docs-table--4 th, .shell .table-wrap table.docs-table--4 td{width:25%}
@media(max-width:700px){
.shell .table-wrap{max-width:100%;overflow-x:auto}
.shell .table-wrap th, .shell .table-wrap td{padding:11px 13px}}

/* Match site typography while keeping API examples in a readable monospace face. */
.shell :is(h1,h2,h3,b,strong,summary,th){font-weight:600}
.shell :is(p,li,td,small){font-weight:400}
.shell .hero .lead{line-height:1.75;max-width:none}
.shell .flow b{font-size:18px;font-weight:500;line-height:1.6}
.shell .flow small{display:block;font-size:16px;line-height:1.7}
.shell .flow small code{display:inline-block;font-size:14px;max-width:100%}
.shell .docs-list{margin:12px 0;padding-left:22px}
.shell .docs-list li+li{margin-top:6px}
.shell pre, .shell pre code{word-break:normal;overflow-wrap:normal;white-space:pre;font-weight:400}
.shell .code-head strong{min-width:0;overflow-wrap:anywhere}

/* Group the setup choices; surrounding explanations remain open sections. */
.shell [aria-labelledby="carrier-title"] .cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;border:0}
.shell [aria-labelledby="carrier-title"] .card{display:flex;flex-direction:column;align-items:flex-start;gap:10px;padding:24px;background:#fff;border:1px solid #dfe5ee;border-radius:10px}
.shell [aria-labelledby="carrier-title"] .card>h3,
.shell [aria-labelledby="carrier-title"] .card>p{margin:0}
.shell [aria-labelledby="carrier-title"] .card>.button{margin-top:auto;align-self:flex-start}

@media(max-width:920px){
    .shell .card{grid-template-columns:minmax(0,1fr) auto;gap:10px 18px}
    .shell .card>h3,.shell .card>p,.shell .card:has(>.badge)>h3,.shell .card:has(>.badge)>p{grid-column:1;grid-row:auto}
    .shell .card>.button,.shell .card:has(>.badge)>.button{grid-column:2;grid-row:1 / 4}
}
@media(max-width:600px){
    .shell .flow{gap:18px;padding:20px}
    .shell .flow>div+div{padding-top:16px;border-top:1px solid #dfe5ee}
    .shell [aria-labelledby="carrier-title"] .cards{grid-template-columns:1fr;gap:16px}
    .shell [aria-labelledby="carrier-title"] .card{padding:20px}
    .shell .card{display:flex;flex-direction:column;align-items:flex-start;gap:10px;padding:20px 0}
    .shell .card>.button{align-self:flex-start;white-space:normal}
}

/* Use the same navy, yellow accents and controls as the user guide. */
.shell .panel>h2{position:relative;padding-left:14px}
.shell .panel>h2::before{content:"";position:absolute;left:0;top:.3em;width:3px;height:.9em;background:var(--primary, #ffb400);border-radius:2px}
.shell .flow{border-top:3px solid var(--main-color, #000b25)}
.shell .flow .n{display:inline-block;padding:4px 10px;margin-bottom:8px;border-radius:6px;background:var(--main-color, #000b25);color:var(--primary, #ffb400)}
.shell [aria-labelledby="carrier-title"] .card{border-top:3px solid var(--main-color, #000b25)}
.shell a:focus-visible,.shell summary:focus-visible{outline:3px solid var(--primary, #ffb400);outline-offset:3px}

/* Keep body copy readable even when shared panel/table rules set smaller text. */
.shell .panel p,.shell .panel li,.shell .callout{font-size:17px;line-height:1.75}
.shell .panel .section-note{font-size:16px;line-height:1.75}
.shell .table-wrap td{font-size:16px;line-height:1.7}
.shell .panel .scroll-hint{font-size:14px}
@media(max-width:600px){
    .shell .panel h2{font-size:24px}
    .shell .panel p,.shell .panel li,.shell .callout{font-size:16px}
    .shell .hero .lead{font-size:17px}
    .shell .panel .scroll-hint{font-size:14px}
    .shell pre{font-size:14px}
}

/* One guide at a time after enhancement; all guides stay available without JS. */
.shell .docs-reader-ready .content>.panel[hidden]{display:none!important}
.shell [data-docs-reader] .sidebar a{margin:3px 0;padding:11px 14px;line-height:1.5}
.shell [data-docs-reader] a[aria-current="page"]{background:#fff3cc;color:var(--main-color, #000b25);box-shadow:inset 3px 0 var(--primary, #ffb400);font-weight:600}
.shell .docs-reader-ready .content>.panel{padding:8px 0 24px;border:0}
.shell [data-docs-reader] .panel>.eyebrow{display:block;margin-bottom:8px}
.shell [data-docs-reader] .panel>h2{margin-bottom:18px}
.shell [data-docs-reader] .panel>h2:focus{outline:none}
.shell [data-docs-reader] .step-list{margin:24px 0}
.shell [data-docs-reader] .step-list b{margin-bottom:6px;font-weight:500}
.shell [data-docs-reader] .callout{margin:24px 0;line-height:1.75}
.shell .docs-connection{padding:18px 20px;background:#f7f9fc;border:1px solid #dfe5ee;border-radius:8px}
.shell .docs-connection>div{display:grid;grid-template-columns:96px minmax(0,1fr);gap:12px;align-items:baseline}
.shell .docs-connection>div+div{margin-top:12px}
.shell .docs-connection span{font-size:15px;color:#64748b}
.shell .docs-connection code,.shell .docs-endpoint code{font-size:16px;color:var(--main-color, #000b25)}
.shell .docs-endpoint{padding:12px 16px;margin:20px 0;background:#f7f9fc;border-left:3px solid var(--primary, #ffb400);border-radius:4px}
.shell .docs-extra{padding:16px 0;margin:0;border:0;border-top:1px solid #dfe5ee;border-radius:0}
.shell .docs-extra:last-of-type{border-bottom:1px solid #dfe5ee;margin-bottom:20px}
.shell .docs-extra summary{color:var(--main-color, #000b25);font-size:16px;font-weight:500;line-height:1.6}
.shell .docs-extra summary::marker{color:#805b00}
.shell .docs-extra[open] summary{margin-bottom:16px}
.shell .docs-extra .code-head{margin-top:16px}
.shell [data-docs-reader] .section-note a{text-decoration:underline;text-underline-offset:3px}
@media(max-width:920px){
    .shell [data-docs-reader] .mobile-nav{margin:0 0 24px;padding:14px 16px;border-color:#dfe5ee;background:#fff}
    .shell [data-docs-reader] .mobile-nav a{padding:10px 12px;border-radius:6px}
}
@media(max-width:600px){
    .shell .docs-connection>div{grid-template-columns:1fr;gap:4px}
    .shell .docs-connection code,.shell .docs-endpoint code{font-size:15px}
}