/* SobangNet shared base and website ↔ web app integration layer (v11.10 app-unified preview) */
:root{--navy:#16305c;--red:#ce2e26;--line:#e4e7eb;--ink:#17181a;--muted:#5f6975}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:var(--ink);font-family:Pretendard Variable,Pretendard,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.wrap{width:min(1120px,calc(100% - 40px));margin:0 auto}.narrow{width:min(860px,calc(100% - 40px))}section{padding:64px 0}header{position:sticky;top:0;z-index:50;border-bottom:1px solid var(--line);background:rgba(255,255,255,.96);backdrop-filter:blur(12px)}.hd{display:flex;align-items:center;min-height:72px;gap:24px}.brand{font-size:22px;font-weight:950;color:var(--navy)}.menu{display:flex;gap:20px;margin-left:auto}.menu a{font-size:13px;font-weight:750;color:#344054}.hcta{display:flex;gap:8px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 16px;border:1px solid transparent;border-radius:10px;font-weight:850;cursor:pointer}.btn.pri{background:var(--red);color:#fff}.btn.kk{background:#fee500;color:#17181a}.btn.gh{border-color:#d0d5dd;background:#fff;color:#344054}.btn.sm,.sample-link,.qnav a{min-height:44px}.btn.lg{min-height:52px;padding:13px 20px}.ham{display:none;min-width:48px;min-height:48px;margin-left:auto;border:0;background:transparent}.hamb{display:grid;gap:4px}.hamb i{display:block;width:22px;height:2px;background:#172b4d}.hamt{font-size:10px}.mnav{display:none;padding:12px 20px 18px;border-top:1px solid var(--line);background:#fff}.mnav.open{display:grid;gap:8px}.mnav>a{min-height:44px;display:flex;align-items:center}.mc{margin-top:6px}.skip{position:fixed;left:12px;top:-80px;z-index:1000;padding:10px 14px;background:#111;color:#fff}.skip:focus{top:12px}.crumb,.lab,.hint{color:#667085}.lab{font-size:12px;font-weight:900;letter-spacing:.08em;color:var(--red)}.sh{display:flex;align-items:end;justify-content:space-between;margin-bottom:24px}.sh h2{margin:4px 0 0;color:var(--navy);font-size:30px}.tint{background:#f7f9fc}footer{padding:42px 0;background:#17181a;color:#fff}.fin{display:grid;grid-template-columns:2fr 1fr;gap:30px}.fbt,.fbc,footer li,footer a{color:#aeb5be}.fbc,footer ul{list-style:none;padding:0}.fbrand .fbn{font-size:22px;font-weight:900}.app-cta{box-shadow:0 8px 20px -12px rgba(206,46,38,.7)}
.app-cta{box-shadow:0 8px 20px -12px rgba(206,46,38,.7)}
.app-cta:after{content:none}
.site-mode-badge{display:inline-flex;align-items:center;gap:7px;margin-left:8px;padding:5px 9px;border:1px solid #dde5ef;border-radius:999px;background:#f6f8fb;color:#365173;font-size:10.5px;font-weight:800;vertical-align:middle}
.site-mode-badge:before{content:'';width:6px;height:6px;border-radius:50%;background:#2f6df6}
.smart-start{margin-top:24px;padding:18px;border:1px solid #dfe5ed;border-radius:16px;background:#fff;box-shadow:0 18px 45px -30px rgba(15,30,51,.55)}
.smart-start>label{display:block;margin:0 0 9px;font-size:13px;font-weight:800;color:#263a59}
.smart-start-form{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px}
.smart-start-form input{height:54px;border-color:#dfe5ed;background:#f8fafc;font-weight:650}
.smart-start-form input:focus{background:#fff;box-shadow:0 0 0 3px rgba(47,109,246,.1)}
.smart-start-form button{min-width:118px}
.smart-start-note{margin-top:9px;color:#6d7785;font-size:12px;line-height:1.55}
.sample-links{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-top:11px}
.sample-links>span{font-size:11.5px;color:#667085}
.sample-link{border:1px solid #e5e8ed;border-radius:999px;background:#fff;padding:7px 10px;color:#42526a;font-size:11.5px;font-weight:700;cursor:pointer}
.sample-link:hover{border-color:#bdc9da;background:#f8fafc}
.handoff-flow{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-top:12px}
.handoff-flow div{padding:10px 9px;border-radius:10px;background:#f6f8fb;text-align:center}
.handoff-flow b{display:block;color:#16305c;font-size:11.5px}
.handoff-flow span{display:block;margin-top:3px;color:#667085;font-size:11px;line-height:1.4}
.comparison-preview{background:linear-gradient(180deg,#fff 0%,#fff8f7 100%)}
.preview-steps{display:grid;gap:8px;margin:16px 0 0;padding:0;list-style:none}
.preview-steps li{display:flex;gap:12px;align-items:flex-start;padding:12px 13px;border:1px solid #ebe5df;border-radius:11px;background:#fff}
.preview-steps li>span{display:grid;place-items:center;width:30px;height:30px;flex:0 0 auto;border-radius:9px;background:#16305c;color:#fff;font-size:11px;font-weight:900}
.preview-steps b{display:block;color:#1f2937;font-size:13.5px;line-height:1.4}
.preview-steps p{margin-top:3px;color:#667085;font-size:12px;line-height:1.5}
.difference{background:#f7f9fc}
.difference-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.difference-card{position:relative;padding:21px 18px;border:1px solid #dfe5ed;border-radius:14px;background:#fff}
.difference-card .num{display:grid;place-items:center;width:30px;height:30px;border-radius:10px;background:#fff0ec;color:#ce2e26;font-size:12px;font-weight:900}
.difference-card h3{margin-top:14px;font-size:16px;line-height:1.4}
.difference-card p{margin-top:8px;color:#5b6572;font-size:13px;line-height:1.65}
.difference-card strong{color:#16305c}
.review-strip{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:18px;padding:16px 18px;border:1px solid #dfe5ed;border-radius:12px;background:#fff}
.review-strip p{color:#55606d;font-size:12.5px;line-height:1.6}
.review-strip b{color:#16305c}
.review-strip a{flex:0 0 auto;color:#ce2e26;font-size:13px;font-weight:800}
.building-retention{background:#16305c;color:#fff}
.retention-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:38px;align-items:center}
.retention-grid h2{font-size:31px;line-height:1.3;letter-spacing:-.04em}.retention-grid>div>p:not(.lab){margin-top:13px;color:#d7dfeb;font-size:14px;line-height:1.75}.retention-grid .lab{color:#ff9a91}
.retention-note{margin:18px 0;padding:15px 16px;border:1px solid rgba(255,255,255,.16);border-radius:12px;background:rgba(255,255,255,.07)}.retention-note b,.retention-note span{display:block;font-size:12px;line-height:1.6}.retention-note span{margin-top:4px;color:#c7d1df}
.retention-cards{display:grid;grid-template-columns:1fr 1fr;gap:10px}.retention-cards article{padding:18px;border:1px solid rgba(255,255,255,.14);border-radius:14px;background:rgba(255,255,255,.07)}.retention-cards span{display:grid;place-items:center;width:30px;height:30px;border-radius:9px;background:#fff;color:#ce2e26;font-size:11px;font-weight:900}.retention-cards b{display:block;margin-top:12px;font-size:15px}.retention-cards p{margin-top:6px;color:#cbd5e1;font-size:12px;line-height:1.55}
.founder-mini{display:grid;grid-template-columns:.72fr 1.28fr;gap:30px;align-items:center}
.founder-quote{padding:28px;border-radius:16px;background:#17181a;color:#fff}
.founder-quote .eyebrow{color:#ff8b81;font-size:11px;font-weight:900;letter-spacing:.12em}
.founder-quote blockquote{margin:13px 0 0;font-size:25px;font-weight:800;line-height:1.4;letter-spacing:-.035em}
.founder-copy h2{font-size:27px;line-height:1.35}
.founder-copy p{margin-top:12px;color:#535e6a;font-size:14px;line-height:1.8}
.founder-copy .btn{margin-top:18px}
.legal-links-inline{display:flex;flex-wrap:wrap;gap:8px 15px;margin-top:12px}
.legal-links-inline a{font-size:12.5px;text-decoration:underline;text-underline-offset:3px}
.partner-app-start h2{margin-top:14px;font-size:24px;letter-spacing:-.035em}
.partner-app-start>p{margin-top:8px;color:#5b6169}
.trust-chip{display:inline-flex;align-items:center;border-radius:999px;background:#eef7f2;color:#0b6b4f;padding:6px 10px;font-size:12px;font-weight:800}
.flow-list{list-style:none;margin-top:20px;display:grid;gap:10px;counter-reset:partner-flow}
.flow-list li{counter-increment:partner-flow;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px;border:1px solid var(--line);border-radius:10px;background:#faf9f7}
.flow-list li:before{content:counter(partner-flow);display:grid;place-items:center;width:27px;height:27px;flex:0 0 auto;border-radius:50%;background:var(--navy);color:#fff;font-size:12px;font-weight:800}
.flow-list b{margin-right:auto;font-size:14px}
.flow-list span{color:#767d85;font-size:12.5px;text-align:right}
@media(max-width:860px){
  .difference-grid{grid-template-columns:1fr 1fr}
  .founder-mini{grid-template-columns:1fr;gap:16px}
  .site-mode-badge{display:none}
  .retention-grid{grid-template-columns:1fr}
}
@media(max-width:520px){
  .smart-start{padding:14px}
  .smart-start-form{grid-template-columns:1fr}
  .smart-start-form button{width:100%}
  .handoff-flow{grid-template-columns:1fr}
  .handoff-flow div{text-align:left}
  .difference-grid{grid-template-columns:1fr}
  .review-strip{align-items:flex-start;flex-direction:column}
  .founder-quote{padding:22px}.founder-quote blockquote{font-size:21px}
  .flow-list li{align-items:flex-start;flex-wrap:wrap}
  .flow-list span{width:100%;padding-left:41px;text-align:left;margin-top:-7px}
  .retention-grid h2{font-size:26px}.retention-cards{grid-template-columns:1fr}
}
@media(max-width:760px){.wrap,.narrow{width:min(100% - 28px,1120px)}section{padding:44px 0}.menu,.hcta{display:none}.ham{display:flex;align-items:center;justify-content:center;gap:7px}.fin{grid-template-columns:1fr}.cert-hero h1{overflow-wrap:anywhere}}