:root{--ink:#17191d;--muted:#62676d;--soft:#777c83;--line:#d9dce1;--rule:#b9c0cb;--blue:#2449e8;--blue-dark:#1835b3;--paper:#fafafa;--band:#eef0f4}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:20px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,'Malgun Gothic',sans-serif;font-size:16px;line-height:1.8;word-break:keep-all}
a{color:inherit;text-decoration:none}a:hover{color:var(--blue)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--blue);outline-offset:4px}
h1,h2,h3,p{margin-top:0}
.shell{max-width:1320px;margin:auto;padding-left:56px;padding-right:56px}
.skip{position:absolute;top:-100px;left:20px;background:#fff;padding:10px;z-index:20}.skip:focus{top:10px}

/* 머리글·바닥글 */
.site-header{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-top:27px;padding-bottom:26px;border-bottom:1px solid var(--line)}
.wordmark{display:inline-flex;align-items:baseline;gap:7px;font-size:26px;font-weight:800;letter-spacing:-1.3px;line-height:1;white-space:nowrap}
.brand-dot{display:inline-block;width:8px;height:8px;background:var(--blue);align-self:center}
.site-nav{display:flex;gap:30px;font-size:14px;flex-wrap:wrap}
.site-footer{border-top:1px solid var(--line);padding-top:27px;padding-bottom:32px;display:flex;flex-direction:column;gap:10px;font-size:12px;color:var(--muted)}
.site-footer .row{display:flex;gap:22px;align-items:center;flex-wrap:wrap}
.site-footer .wordmark{font-size:20px;color:var(--ink)}
.site-footer .tag{margin-left:auto;font-size:10px;letter-spacing:.08em}
.site-footer p{margin:0}

/* 공통 요소 */
.kicker{font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--blue);margin:0}
.edition{font-size:10px;letter-spacing:.09em;color:var(--muted)}
h1{font-size:clamp(34px,4.2vw,56px);line-height:1.35;letter-spacing:-.055em;font-weight:600;margin-bottom:22px}
h2{font-size:30px;font-weight:600;line-height:1.5;letter-spacing:-.04em;margin-bottom:0}
h3{font-size:19px;font-weight:600;line-height:1.5;letter-spacing:-.03em;margin-bottom:10px}
.muted{color:var(--muted)}
.small{font-size:12px;color:var(--muted);line-height:1.8}
.section{padding-top:76px;padding-bottom:76px}
.band{background:var(--band)}
.ruled{border-top:1px solid var(--line)}
.section-heading{display:grid;grid-template-columns:180px 1.2fr 1fr;gap:30px;margin-bottom:35px}
.section-heading .kicker{padding-top:8px}
.section-heading>p:last-child{font-size:15px;color:var(--muted);padding-top:8px;margin:0}
.button{display:inline-block;background:var(--blue);color:#fff;padding:12px 20px;font-size:14px;border:0;cursor:pointer;font-family:inherit}
.button:hover{background:var(--blue-dark);color:#fff}
.button[disabled]{background:#9aa6d9;cursor:wait}
.text-link{display:inline-flex;gap:18px;font-size:14px;border-bottom:1px solid var(--ink);padding-bottom:3px}
.sq{display:inline-block;width:8px;height:8px;background:var(--blue);margin-right:10px;vertical-align:middle;position:relative;top:-2px}

/* 히어로 */
.hero{padding-top:36px;padding-bottom:70px}
.hero-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:33px;flex-wrap:wrap}
.hero-grid{display:grid;grid-template-columns:1.8fr 1fr;gap:50px;align-items:end}
.hero-description{font-size:16px;color:var(--muted);margin-bottom:24px;max-width:620px}
.hero-actions{display:flex;gap:24px;align-items:center;flex-wrap:wrap}
.hero-side{border-left:1px solid var(--line);padding-left:27px;font-size:18px;font-weight:500;margin:0 0 3px;line-height:1.8}
.hero-side span{display:block;font-size:13px;color:var(--muted);font-weight:400;margin-top:13px}

/* 목록·격자 */
.grid2{display:grid;grid-template-columns:1fr 1fr;column-gap:55px;border-top:1px solid var(--ink)}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);column-gap:40px;border-top:1px solid var(--ink)}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
.item{border-bottom:1px solid var(--line);padding:26px 0}
.item p{font-size:15px;color:var(--muted);margin:0;line-height:1.85}
.item small{display:block;margin-top:14px;font-size:12px;color:var(--soft)}
.index{font-size:12px;color:var(--blue);display:block;margin-bottom:8px;letter-spacing:.04em}
.col{border-top:1px solid var(--rule);padding-top:17px}
.col p{font-size:15px;color:var(--muted);margin:0}
.big{font-size:56px;font-weight:600;letter-spacing:-.04em;line-height:1;color:var(--blue);margin-bottom:12px}
.hl{color:var(--blue)}
.em{color:var(--blue);font-weight:700}
.notice-banner{display:block;margin-top:40px}
.notice-banner img{display:block;width:100%;height:auto;border:1px solid var(--line)}
.notice-banner .cap{display:flex;justify-content:space-between;gap:6px 16px;flex-wrap:wrap;padding-top:12px;font-size:12px;color:var(--muted)}
.notice-banner .go{font-size:14px;color:var(--ink);border-bottom:1px solid var(--ink);padding-bottom:2px}
.notice-banner:hover .go{color:var(--blue);border-color:var(--blue)}
.footnote{font-size:12px;color:var(--muted);line-height:1.8;margin:21px 0 0;max-width:950px}
.statement{border-top:1px solid var(--ink);padding-top:22px;margin-top:28px;font-size:18px;font-weight:600;letter-spacing:-.02em;line-height:1.7}
.statement span{display:block;font-weight:400;color:var(--muted);font-size:15px;margin-top:6px}

/* 점검 유도 띠 */
.cta-band{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;border-top:1px solid var(--ink);border-bottom:1px solid var(--line);padding:28px 0}
.cta-band p{margin:0;font-size:18px;font-weight:600;letter-spacing:-.02em}
.cta-band p span{display:block;font-size:14px;font-weight:400;color:var(--muted)}

/* 자주 묻는 질문 */
details{border-top:1px solid var(--line);padding:20px 0}
details:last-of-type{border-bottom:1px solid var(--line)}
summary{cursor:pointer;font-weight:600;font-size:17px;letter-spacing:-.02em}
details p{margin:12px 0 0;color:var(--muted);font-size:15px}

/* 문의 */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:50px}
.contact-grid p{font-size:15px;color:var(--muted);margin-bottom:21px}
.email{font-size:clamp(20px,2.4vw,30px);letter-spacing:-.02em;border-bottom:1px solid var(--ink);padding-bottom:7px;display:inline-flex;gap:30px}
.email span{color:var(--blue)}

/* 점검 화면 */
.check-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:56px;align-items:start}
.form{border-top:1px solid var(--ink);padding-top:26px}
.form label.field{display:block;font-size:13px;font-weight:600;margin-bottom:8px}
.form input[type=text]{width:100%;font:inherit;font-size:18px;padding:13px 14px;border:1px solid var(--rule);background:#fff;color:var(--ink);border-radius:0}
.form input[type=text]:focus{border-color:var(--blue);outline:none}
.consent{display:flex;gap:10px;align-items:flex-start;margin:16px 0 4px;font-size:14px;color:var(--ink)}
.consent input{width:18px;height:18px;margin-top:4px;accent-color:var(--blue)}
.form .actions{display:flex;gap:18px;align-items:center;flex-wrap:wrap;margin-top:22px}
.turnstile{margin-top:16px;min-height:0}
.how{border-top:1px solid var(--rule);padding-top:22px}
.how ul{list-style:none;padding:0;margin:0}
.how li{padding:10px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}
.how li strong{color:var(--ink);font-weight:600}
.notice{padding:14px 16px;background:var(--band);font-size:14px;margin-top:18px}
.error{color:#b42318;font-size:14px;margin-top:14px;min-height:1em}
.result{margin-top:56px;border-top:1px solid var(--ink);padding-top:30px}
.result[hidden]{display:none}
.status{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--blue);margin-bottom:12px}
.status::before{content:"";width:10px;height:10px;background:var(--blue)}
.status.neutral{color:var(--muted)}.status.neutral::before{background:var(--soft)}
.result h2{font-size:28px;margin-bottom:12px}
.result .detail{color:var(--muted);font-size:15px;max-width:820px}
.facts{display:grid;grid-template-columns:repeat(3,1fr);column-gap:30px;margin-top:26px;border-top:1px solid var(--line)}
.facts div{border-bottom:1px solid var(--line);padding:12px 0;font-size:14px;overflow-wrap:anywhere}
.facts dt{font-size:12px;color:var(--soft);margin-bottom:2px}
.facts dd{margin:0}
.steps-list{counter-reset:s;list-style:none;padding:0;margin:26px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.steps-list li{border-top:1px solid var(--rule);padding-top:14px;font-size:15px;color:var(--muted)}
.steps-list li::before{counter-increment:s;content:"0" counter(s);display:block;font-size:12px;color:var(--blue);margin-bottom:6px}
.result .actions{display:flex;gap:22px;align-items:center;flex-wrap:wrap;margin-top:30px}

@media(max-width:1000px){.shell{padding-left:32px;padding-right:32px}.section-heading{grid-template-columns:130px 1.2fr 1fr;gap:25px}.hero-grid{gap:30px}.grid2,.grid3{column-gap:30px}.check-grid{gap:36px}}
@media(max-width:700px){
.shell{padding-left:22px;padding-right:22px}
.site-header{padding-top:22px;padding-bottom:22px}
.wordmark{font-size:22px;gap:5px}.brand-dot{width:6px;height:6px}
.site-nav{gap:16px;font-size:12px}.site-nav .hide-sm{display:none}
.edition{display:none}
h1{font-size:32px;line-height:1.4}
h2,.result h2{font-size:24px}
.hero-grid,.section-heading,.contact-grid,.check-grid{display:block}
.hero-side{display:none}
.section{padding-top:46px;padding-bottom:46px}
.section-heading{margin-bottom:26px}.section-heading .kicker{padding:0;margin-bottom:14px}.section-heading>p:last-child{padding-top:14px}
.grid2,.grid3{display:block}
.grid4{grid-template-columns:1fr 1fr;gap:22px 18px}
.steps-list{grid-template-columns:1fr;gap:16px}
.facts{grid-template-columns:1fr}
.big{font-size:44px}
.how{margin-top:36px}
.site-footer .tag{display:none}
}

/* 히어로: 제목 옆 KISA 공지 이미지 */
.hero-split{grid-template-columns:1.15fr 1fr;grid-template-areas:"title visual" "body visual";column-gap:56px;row-gap:0;align-items:start}
.hero-title{grid-area:title}
.hero-visual{grid-area:visual;margin-top:8px}
.hero-visual .notice-banner{margin-top:0}
.hero-body{grid-area:body}
@media(max-width:900px){
.hero-grid.hero-split{display:grid;grid-template-columns:minmax(0,1fr);grid-template-areas:"title" "visual" "body";row-gap:22px}
.hero-title{margin-bottom:0}
.hero-visual{margin-top:0}
.hero-visual .notice-banner .cap{font-size:11px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}