:root{
  --bg:#F6F3EC;
  --surface:#FFFFFF;
  --surface-2:#EFE8D8;
  --ink:#1B2333;
  --muted:#5C6478;
  --muted-2:#8B8F7E;
  --primary:#1E3A6E;
  --primary-strong:#12213D;
  --primary-soft:#DEE6F2;
  --accent:#FF6A3D;
  --accent-strong:#E0501F;
  --accent-soft:#FDE2D4;
  --line:#E4DCC9;
  --shadow: 0 20px 44px -24px rgba(18,33,61,.4);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#12161F; --surface:#191F2C; --surface-2:#1F2634; --ink:#EDEFF5;
    --muted:#A2A9BC; --muted-2:#8189A0; --primary:#7C9CDB; --primary-strong:#A9C0EB;
    --primary-soft:#22304C; --accent:#FF8A61; --accent-strong:#FFA37D; --accent-soft:#3A2419;
    --line:#2B3345; --shadow: 0 20px 44px -22px rgba(0,0,0,.6);
  }
}
:root[data-theme="dark"]{
  --bg:#12161F; --surface:#191F2C; --surface-2:#1F2634; --ink:#EDEFF5;
  --muted:#A2A9BC; --muted-2:#8189A0; --primary:#7C9CDB; --primary-strong:#A9C0EB;
  --primary-soft:#22304C; --accent:#FF8A61; --accent-strong:#FFA37D; --accent-soft:#3A2419;
  --line:#2B3345; --shadow: 0 20px 44px -22px rgba(0,0,0,.6);
}

*{box-sizing:border-box;}
html{background:var(--bg);}
body{margin:0; background:var(--bg); color:var(--ink); font-family:'Noto Sans KR', -apple-system, sans-serif; -webkit-font-smoothing:antialiased; padding-inline:20px;}
h1,h2,h3{font-family:'Noto Sans KR',sans-serif; font-weight:800; text-wrap:balance; margin:0; letter-spacing:-.01em; color:var(--primary-strong);}
:root[data-theme="dark"] h1,:root[data-theme="dark"] h2,:root[data-theme="dark"] h3{color:var(--ink);}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) h1,:root:not([data-theme="light"]) h2,:root:not([data-theme="light"]) h3{color:var(--ink);}}
p{line-height:1.75; color:var(--muted); margin:0;}
.mono{font-family:'JetBrains Mono',monospace; font-variant-numeric:tabular-nums;}
a{color:inherit;}
.wrap{max-width:1080px; margin-inline:auto;}
.prose{max-width:660px; margin-inline:auto;}
.eyebrow{display:inline-flex; align-items:center; gap:8px; font-size:12px; font-weight:800; letter-spacing:.14em; text-transform:uppercase; color:var(--accent-strong);}
.eyebrow::before{content:""; width:16px; height:2px; background:var(--accent); display:inline-block; border-radius:2px;}

img{max-width:100%; display:block;}

/* header */
header.top{padding-block:18px; position:sticky; top:0; z-index:40; background:color-mix(in srgb, var(--bg) 90%, transparent); backdrop-filter:blur(10px); border-bottom:1px solid var(--line);}
header.top .wrap{display:flex; align-items:center; justify-content:space-between; gap:18px;}
.brandmark{display:flex; align-items:center; gap:9px; font-weight:800; font-size:18px; letter-spacing:-.02em;}
.brandmark .mark{width:32px; height:32px; border-radius:9px; background:linear-gradient(135deg, var(--primary), var(--primary-strong)); display:flex; align-items:center; justify-content:center; color:var(--accent-soft); flex:none; font-size:12.5px; font-weight:800;}
.navwrap{display:flex; align-items:center; gap:24px; flex:1; justify-content:flex-end;}
nav.main{display:flex; gap:22px; font-size:14px; font-weight:600; color:var(--muted);}
nav.main a{text-decoration:none;}
nav.main a:hover, nav.main a[aria-current="page"]{color:var(--accent-strong);}
.cta-btn{background:var(--accent); color:#fff !important; font-weight:800; font-size:14px; padding:11px 20px; border-radius:999px; white-space:nowrap; text-decoration:none; box-shadow:var(--shadow);}
.cta-ghost{border:1px solid var(--line); color:var(--ink) !important; font-weight:700; font-size:14px; padding:10px 19px; border-radius:999px; text-decoration:none;}

/* hero */
.hero{position:relative; border-radius:26px; overflow:hidden; margin-top:22px; box-shadow:var(--shadow);}
.hero img{width:100%; height:clamp(320px,52vw,480px); object-fit:cover; object-position:center 40%;}
.hero .scrim{position:absolute; inset:0; background:linear-gradient(0deg, rgba(10,15,26,.88) 0%, rgba(10,15,26,.5) 45%, rgba(10,15,26,.12) 75%);}
.hero .content{position:absolute; left:0; right:0; bottom:0; padding:34px 34px 32px;}
.hero .eyebrow{color:var(--accent);}
.hero .eyebrow::before{background:var(--accent);}
.hero h1{color:#fff; font-size:clamp(28px,4.4vw,42px); line-height:1.28; max-width:16ch; margin-top:10px;}
.hero p{color:#D8DDEA; max-width:46ch; margin-top:12px; font-size:15px;}
.hero .ctas{display:flex; gap:10px; flex-wrap:wrap; margin-top:20px;}

main{padding-block:56px;}
section{padding-block:46px; border-top:1px solid var(--line);}
section:first-child{border-top:none;}
section h2{font-size:26px;}
.lead{font-size:15.5px; margin-top:14px;}

/* before/after */
.compare{display:grid; grid-template-columns:1fr auto 1fr; gap:20px; align-items:center; margin-top:28px;}
.compare .arrow{font-size:22px; color:var(--accent-strong); font-weight:800;}
.compare .col{background:var(--surface); border:1px solid var(--line); border-radius:18px; padding:22px;}
.compare .col.before{border-top:4px solid var(--muted-2);}
.compare .col.after{border-top:4px solid var(--accent);}
.compare .col h3{font-size:15px; margin-bottom:14px;}
.compare .col.before h3{color:var(--muted);}
.compare .col.after h3{color:var(--accent-strong);}
.compare ul{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:11px;}
.compare li{font-size:13.5px; color:var(--ink); display:flex; gap:8px; line-height:1.6;}
.compare .before li::before{content:"–"; color:var(--muted-2); font-weight:700; flex:none;}
.compare .after li::before{content:"✓"; color:var(--accent-strong); font-weight:800; flex:none;}
@media (max-width:720px){.compare{grid-template-columns:1fr;} .compare .arrow{transform:rotate(90deg); justify-self:center;}}

/* SAFE pillars */
.pillars{display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin-top:28px;}
.pillar{background:var(--surface); border:1px solid var(--line); border-radius:18px; padding:22px 18px; text-align:center;}
.pillar .letter{width:48px; height:48px; margin-inline:auto; border-radius:50%; background:var(--primary); color:var(--accent-soft); display:flex; align-items:center; justify-content:center; font-family:'JetBrains Mono',monospace; font-weight:700; font-size:19px;}
.pillar .word{font-weight:800; font-size:14.5px; margin-top:12px; color:var(--ink);}
.pillar .desc{font-size:12.5px; margin-top:6px; line-height:1.6;}
@media (max-width:720px){.pillars{grid-template-columns:1fr 1fr;}}

/* diff grid */
.diffgrid{display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:18px; overflow:hidden; margin-top:28px;}
.diffgrid .item{background:var(--surface); padding:22px 20px;}
.diffgrid .tag{display:inline-block; font-family:'JetBrains Mono',monospace; font-size:11.5px; font-weight:700; background:var(--primary-soft); color:var(--primary-strong); padding:4px 10px; border-radius:999px; margin-bottom:10px;}
:root[data-theme="dark"] .diffgrid .tag{color:var(--ink);}
.diffgrid p{font-size:13.5px; color:var(--ink);}
@media (max-width:820px){.diffgrid{grid-template-columns:1fr 1fr;}}
@media (max-width:560px){.diffgrid{grid-template-columns:1fr;}}

/* cost */
.coststat{display:flex; align-items:baseline; gap:14px; flex-wrap:wrap; background:linear-gradient(135deg, var(--primary-strong), var(--primary)); color:#fff; border-radius:20px; padding:30px 30px; margin-top:26px;}
.coststat .num{font-family:'JetBrains Mono',monospace; font-size:clamp(30px,5vw,46px); font-weight:700; color:var(--accent);}
.coststat .lbl{font-size:14px; color:#CBD5EA; max-width:32ch; line-height:1.6;}
.gallery{display:grid; grid-template-columns:1fr; gap:14px; margin-top:22px; border-radius:18px; overflow:hidden; border:1px solid var(--line);}
.callout{background:var(--surface-2); border:1px solid var(--line); border-left:3px solid var(--accent-strong); border-radius:0 16px 16px 0; padding:18px 22px; font-size:13.5px; color:var(--ink); line-height:1.75;}
.callout b{color:var(--accent-strong);}

/* menu */
.menugrid{display:grid; grid-template-columns:repeat(4,1fr); gap:12px; margin-top:28px;}
.menuitem{background:var(--surface); border:1px solid var(--line); border-radius:16px; padding:18px 14px; text-align:center;}
.menuitem .ic{font-size:26px;}
.menuitem .t{font-size:13px; font-weight:700; margin-top:8px; color:var(--ink);}
@media (max-width:720px){.menugrid{grid-template-columns:repeat(2,1fr);}}

/* feature list */
.featgrid{display:grid; grid-template-columns:repeat(2,1fr); gap:14px; margin-top:28px;}
.feat{background:var(--surface); border:1px solid var(--line); border-radius:16px; padding:18px 20px; display:flex; gap:14px; align-items:flex-start;}
.feat .ic{font-size:20px; flex:none; width:38px; height:38px; border-radius:11px; background:var(--accent-soft); display:flex; align-items:center; justify-content:center;}
.feat .t{font-weight:700; font-size:14.5px; color:var(--ink); margin-bottom:4px;}
.feat .d{font-size:13px; color:var(--muted); line-height:1.6;}
@media (max-width:720px){.featgrid{grid-template-columns:1fr;}}

/* effects */
.effects{display:grid; grid-template-columns:repeat(3,1fr); gap:14px; margin-top:28px;}
.effect{background:var(--surface-2); border:1px solid var(--line); border-radius:16px; padding:22px; text-align:center;}
.effect .t{font-weight:800; color:var(--accent-strong); font-size:14.5px; margin-bottom:8px;}
.effect .d{font-size:13px; line-height:1.7;}
@media (max-width:720px){.effects{grid-template-columns:1fr;}}

/* faq */
.faqlist{display:flex; flex-direction:column; gap:1px; background:var(--line); border:1px solid var(--line); border-radius:18px; overflow:hidden; margin-top:28px;}
.faqlist details{background:var(--surface);}
.faqlist summary{list-style:none; cursor:pointer; padding:18px 22px; display:flex; align-items:center; justify-content:space-between; gap:14px; font-weight:700; font-size:14.5px; color:var(--ink);}
.faqlist summary::-webkit-details-marker{display:none;}
.faqlist summary .q{display:flex; gap:12px; align-items:baseline;}
.faqlist summary .qmark{font-family:'JetBrains Mono',monospace; color:var(--accent-strong); font-weight:700; flex:none;}
.faqlist summary .chev{font-size:12px; color:var(--muted-2); transition:transform .18s ease; flex:none;}
.faqlist details[open] summary .chev{transform:rotate(180deg);}
.faqlist .a{padding:0 22px 20px 54px; font-size:13.5px; color:var(--muted); line-height:1.75;}

/* form */
.applywrap{display:grid; grid-template-columns:1fr 1fr; gap:36px; align-items:start; margin-top:8px;}
.applywrap .perks{list-style:none; margin:18px 0 0; padding:0; display:flex; flex-direction:column; gap:10px;}
.applywrap .perks li{font-size:13.5px; color:var(--ink); display:flex; gap:8px;}
.applywrap .perks li::before{content:"✓"; color:var(--accent-strong); font-weight:800;}
.form-card{background:var(--surface); border:1px solid var(--line); border-radius:20px; padding:26px; display:flex; flex-direction:column; gap:14px; box-shadow:var(--shadow);}
.field{display:flex; flex-direction:column; gap:6px;}
.field label{font-size:12.5px; font-weight:700; color:var(--muted);}
.field input,.field select,.field textarea{font:inherit; font-size:14.5px; padding:11px 13px; border-radius:10px; border:1px solid var(--line); background:var(--bg); color:var(--ink);}
.field textarea{resize:vertical;}
.radio-row{display:flex; gap:14px; flex-wrap:wrap; font-size:13.5px;}
.radio-row label{display:flex; align-items:center; gap:6px; font-weight:500;}
.submit-btn{background:var(--accent); color:#fff; font-weight:800; font-size:15px; padding:13px; border:none; border-radius:12px; cursor:pointer;}
.submit-btn:hover{background:var(--accent-strong);}
.form-note{font-size:12px; color:var(--muted-2); text-align:center;}
@media (max-width:820px){.applywrap{grid-template-columns:1fr;}}

footer{padding-block:26px 44px; text-align:center;}
footer p{font-size:12px; color:var(--muted-2); max-width:52ch; margin-inline:auto; line-height:1.7;}

:focus-visible{outline:2px solid var(--accent); outline-offset:2px;}

/* blog list */
.blogher{padding-block:40px 8px;}
.blogher h1{font-size:clamp(26px,4vw,36px); margin-top:12px;}
.postgrid{display:grid; grid-template-columns:repeat(2,1fr); gap:18px; margin-top:30px;}
.postcard{background:var(--surface); border:1px solid var(--line); border-radius:18px; padding:24px; display:flex; flex-direction:column; text-decoration:none; transition:border-color .15s ease;}
.postcard:hover{border-color:var(--accent);}
.postcard .date{font-family:'JetBrains Mono',monospace; font-size:11.5px; color:var(--muted-2); font-weight:700;}
.postcard h3{font-size:17px; margin-top:10px; color:var(--ink);}
.postcard p{font-size:13.5px; margin-top:8px;}
.postcard .more{font-size:13px; font-weight:700; color:var(--accent-strong); margin-top:16px;}
@media (max-width:720px){.postgrid{grid-template-columns:1fr;}}

/* blog post detail */
.detail-hero{padding-block:40px 6px;}
.detail-hero .meta{font-family:'JetBrains Mono',monospace; font-size:12px; color:var(--muted-2); margin-top:14px;}
.detail-hero h1{font-size:clamp(26px,4.2vw,38px); margin-top:10px; max-width:20ch;}
.detail-hero .teaser{margin-top:14px; font-size:15px; max-width:620px;}
article.prose h3{font-size:19px; margin-top:36px; margin-bottom:4px; color:var(--ink);}
article.prose p{margin-top:12px; font-size:15px;}
.backlink{display:inline-flex; align-items:center; gap:6px; font-size:13.5px; font-weight:700; color:var(--muted); text-decoration:none; margin-top:36px;}
.backlink:hover{color:var(--accent-strong);}