/* 로그인 후 처음 안내(6장) — 어두운 유리판 + SYNAPSE 그라데이션. 900px 이하는 아래에서 올라오는 전체 화면 시트 */
body.ob-open{overflow:hidden}
.ob-bg{position:fixed;inset:0;z-index:1000;background:rgba(3,5,12,.78);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;padding:20px;animation:obfade .25s ease}
@keyframes obfade{from{opacity:0}to{opacity:1}}
.ob{width:min(1060px,100%);height:min(640px,calc(100dvh - 40px));display:flex;overflow:hidden;border-radius:22px;color:#f2f4fb;
  font-family:var(--sans,"Pretendard",-apple-system,"Apple SD Gothic Neo","Malgun Gothic",sans-serif);
  border:1px solid transparent;background:linear-gradient(#0b0f1d,#0b0f1d) padding-box,linear-gradient(135deg,rgba(34,211,238,.55),rgba(59,108,255,.35) 45%,rgba(168,85,247,.55)) border-box;
  box-shadow:0 0 60px rgba(59,108,255,.14),0 40px 100px rgba(0,0,0,.6)}
.ob-img{position:relative;width:340px;flex:none;background:radial-gradient(400px 300px at 30% 20%,rgba(59,108,255,.35),transparent 60%),radial-gradient(400px 300px at 80% 90%,rgba(168,85,247,.3),transparent 60%),#070a14}
.ob-img img{width:100%;height:100%;object-fit:cover;object-position:50% 20%;display:block}
.ob-img::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,15,29,0) 50%,#0b0f1d 100%),linear-gradient(0deg,rgba(11,15,29,.75) 0%,rgba(11,15,29,0) 35%)}
.ob-unit{position:absolute;left:22px;bottom:20px;z-index:1;font-size:13px;font-weight:700;letter-spacing:.08em;color:#a5f3fc}
.ob-body{flex:1;min-width:0;padding:30px 40px 24px;display:flex;flex-direction:column;gap:14px;overflow:auto}
.ob-top{display:flex;align-items:center;gap:12px;font-size:13px}
.ob-tag{color:#a5f3fc;font-weight:700;letter-spacing:.04em;padding:4px 10px;border-radius:999px;background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.3)}
.ob-cnt{margin-left:auto;color:rgba(242,244,251,.7);font-variant-numeric:tabular-nums;font-weight:600}
.ob-skip{background:none;border:1px solid rgba(255,255,255,.16);border-radius:999px;color:rgba(242,244,251,.85);font:inherit;font-size:13px;font-weight:600;padding:0 14px;cursor:pointer;min-height:34px}
.ob-skip:hover{color:#fff;border-color:rgba(255,255,255,.4)}
.ob-content{display:flex;flex-direction:column;gap:14px}
.ob h2{margin:6px 0 0;font-size:30px;font-weight:800;letter-spacing:-.03em;line-height:1.28}
.ob-desc{margin:0;font-size:16px;line-height:1.7;color:rgba(242,244,251,.8);max-width:560px}
.ob-steps{list-style:none;margin:6px 0 0;padding:0;display:flex;flex-direction:column;gap:12px}
.ob-steps li{display:flex;gap:14px;align-items:flex-start;padding:12px 14px;border-radius:14px;background:rgba(255,255,255,.035);border:1px solid rgba(255,255,255,.07)}
.ob-steps span{flex:none;width:8px;height:8px;margin-top:9px;border-radius:50%;background:linear-gradient(135deg,#22d3ee,#3b6cff 55%,#a855f7)}
.ob-steps b{display:block;font-size:16px;font-weight:700}
.ob-steps small{display:block;font-size:14px;color:rgba(242,244,251,.72);margin-top:3px;line-height:1.55}
.ob-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:4px}
.ob-cards.n2{grid-template-columns:repeat(2,minmax(0,1fr))}
.ob-card{border-radius:16px;padding:16px;border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.035);display:flex;flex-direction:column;gap:8px;min-height:190px}
.ob-card small{font-size:12px;font-weight:700;letter-spacing:.04em;color:rgba(242,244,251,.7)}
.ob-card b{font-size:18px;font-weight:800}
.ob-card p{margin:0;font-size:14px;line-height:1.6;color:rgba(242,244,251,.78)}
.ob-card em{margin-top:auto;font-style:normal;font-size:13px;font-weight:600;color:#a5f3fc}
.ob-card.rec{border-color:rgba(52,211,153,.55);background:linear-gradient(180deg,rgba(52,211,153,.1),rgba(52,211,153,.02))}
.ob-card.rec small{color:#6ee7b7}
.ob-safe{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:4px}
.ob-safe div{padding:16px;border-radius:16px;background:rgba(255,255,255,.035);border:1px solid rgba(255,255,255,.08)}
.ob-safe span{font-size:22px;display:block;margin-bottom:6px}
.ob-safe b{display:block;font-size:16px;font-weight:800}
.ob-safe p{margin:4px 0 0;font-size:14px;line-height:1.6;color:rgba(242,244,251,.78)}
.ob-nav{margin-top:auto;display:flex;align-items:center;gap:14px;padding-top:14px;flex-wrap:wrap}
.ob-prev{width:46px;height:46px;border-radius:12px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05);color:#f2f4fb;font-size:18px;cursor:pointer;flex:none}
.ob-prev:disabled{opacity:.3;cursor:default}
.ob-dots{display:flex;gap:4px}
.ob-dots button{width:22px;height:22px;padding:0;border:0;background:none;cursor:pointer;display:grid;place-items:center}
.ob-dots button::before{content:"";width:8px;height:8px;border-radius:999px;background:rgba(255,255,255,.25);transition:width .2s,background .2s}
.ob-dots button.on::before{width:22px;background:linear-gradient(90deg,#22d3ee,#a855f7)}
.ob-alt{margin-left:auto;color:rgba(242,244,251,.85);font-size:14px;font-weight:600;text-decoration:underline;text-underline-offset:3px}
.ob-alt:hover{color:#fff}
.ob-alt+.ob-next{margin-left:0}
.ob-next{margin-left:auto;height:46px;padding:0 24px;border-radius:12px;border:0;background:linear-gradient(120deg,#22d3ee,#3b6cff 50%,#a855f7);color:#fff;font:inherit;font-size:15.5px;font-weight:800;cursor:pointer;box-shadow:0 8px 24px rgba(59,108,255,.35)}
.ob-next:hover{filter:brightness(1.08)}
.ob button:focus-visible,.ob a:focus-visible{outline:2px solid #a5f3fc;outline-offset:2px}
@media(max-width:900px){
  .ob-bg{padding:0;align-items:flex-end}
  .ob{flex-direction:column;width:100%;height:100dvh;max-height:100dvh;border-radius:0}
  .ob-img{width:100%;height:120px}
  .ob-img img{object-position:50% 18%}
  .ob-body{padding:16px 18px calc(14px + env(safe-area-inset-bottom))}
  .ob h2{font-size:24px}
  .ob-desc{font-size:15px}
  .ob-cards,.ob-cards.n2,.ob-safe{grid-template-columns:1fr}
  .ob-card{min-height:0}
  .ob-nav{position:sticky;bottom:0;background:linear-gradient(0deg,#0b0f1d 70%,rgba(11,15,29,0));margin:auto -18px 0;padding:14px 18px 2px}
  .ob-next{flex:1;margin-left:0}
  .ob-alt{order:5;width:100%;text-align:center;margin:2px 0 0}
}
@media(max-width:380px){.ob-img{display:none}.ob-steps li{padding:10px 12px}}
@media(prefers-reduced-motion:reduce){.ob-bg{animation:none}.ob-dots button::before{transition:none}}

.ob-cta{margin:14px 0 0;font-size:14px}.ob-cta a{font-weight:700}.ob-cta small{display:block;color:var(--muted,#8f98b6);margin-top:4px}
@media (min-width:901px){.ob-nav{position:sticky;bottom:-24px;z-index:2;background:linear-gradient(0deg,#0b0f1d 75%,rgba(11,15,29,0));margin-left:-40px;margin-right:-40px;padding:16px 40px 6px}}@media (max-height:760px){.ob h2{font-size:24px}.ob-steps{gap:8px}.ob-steps li{padding:9px 12px}.ob-card{min-height:0}}