/* One-time invitation and welcome. No continuous animation or business UI rules. */
.ob-stay-classic{display:block;border:0;background:transparent;color:#c3d8f5;padding:10px 0 0;min-height:44px;font:500 12px system-ui;text-decoration:underline;text-underline-offset:4px;cursor:pointer}
.ob-invitation,.ob-welcome{box-sizing:border-box;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif;color:#142340}
.ob-invitation{position:fixed;z-index:1005;left:50%;bottom:26px;transform:translateX(-50%);display:flex;align-items:center;gap:22px;width:min(690px,calc(100% - 32px));padding:26px 30px;border:1px solid #90b6ff70;border-radius:22px;background:linear-gradient(120deg,#071327f5,#0a2148f7);color:#f6f9ff;box-shadow:0 22px 80px #0008,0 0 45px #086bff25}
.ob-invitation[hidden]{display:none!important}.ob-invitation>img{flex:none;width:82px;height:82px;filter:drop-shadow(0 0 20px #086cff65)}
.ob-invitation small,.ob-welcome>small{display:block;font-size:10px;letter-spacing:.19em;font-weight:700;color:#89baff}
.ob-invitation h2{font-size:24px;margin:7px 0 8px;line-height:1.2;color:#fff;letter-spacing:-.035em}
.ob-invitation p{font-size:13px;line-height:1.5;color:#becce0;margin:0 0 16px}
#obInviteLater{position:absolute;right:8px;top:8px;border:0;width:40px;height:40px;background:transparent;color:#a9bbd7;cursor:pointer;font-size:17px}
.ob-invite-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap}.ob-invite-actions label{display:flex;gap:8px;align-items:center;font-size:12px;cursor:pointer;min-height:44px}.ob-invite-actions input{accent-color:#2573ff;width:18px;height:18px}
.ob-launch{font:700 13px/1.2 system-ui;border-radius:10px;border:1px solid #93b9ff77;min-height:46px;cursor:pointer;padding:13px 20px;background:linear-gradient(120deg,#166cff,#034be0);box-shadow:inset 0 1px #fff6,0 6px 20px #0059fa35;color:#fff}.ob-launch span{margin-left:18px}.ob-launch:hover{background:#2677ff}
.ob-invite-note{display:block;color:#91a5c4;font-size:10px;margin-top:12px}
.ob-classic-restore{position:fixed;bottom:28px;right:24px;z-index:1005;background:#0755ed;color:white;border:1px solid #7cafef;border-radius:12px;padding:14px 20px;min-height:48px;font:600 13px system-ui;cursor:pointer;box-shadow:0 10px 38px #00153e50}
.ob-welcome{width:min(660px,calc(100vw - 32px));max-height:calc(100dvh - 32px);margin:auto;border:1px solid #c6d8f2;border-radius:24px;padding:38px;text-align:center;background:radial-gradient(ellipse at 50% 0,#cfe4ff,#fff 68%);box-shadow:0 35px 150px #00112655;overflow:auto}
.ob-welcome::backdrop{background:#020b1dea;backdrop-filter:blur(8px)}
.ob-welcome>img{width:104px;height:104px;filter:drop-shadow(0 10px 16px #095dff30)}
.ob-welcome>small{color:#42628d;margin:12px 0}.ob-welcome h2{font-family:Georgia,serif;font-size:clamp(32px,5vw,48px);font-weight:500;line-height:1.08;margin:15px 0;letter-spacing:-.055em}.ob-welcome h2 span{color:#0755ed}
.ob-welcome>p{font-size:14px;color:#566d8b;line-height:1.7;max-width:490px;margin:0 auto 22px}
.ob-archive-note{background:#eef4fc;border:1px solid #dce7f6;border-radius:12px;display:flex;text-align:left;gap:12px;padding:16px;color:#526684;font-size:12px;line-height:1.6}.ob-archive-note svg{width:22px;height:22px;flex:none;color:#0755ed}.ob-archive-note b{color:#142f55}
.ob-welcome-actions{display:grid;gap:10px;margin-top:24px}.ob-welcome-actions button{min-height:46px;white-space:normal}
.ob-invitation button:focus-visible,.ob-classic-restore:focus-visible,.ob-welcome button:focus-visible{outline:3px solid #65baff;outline-offset:4px}
@media(max-width:600px){.ob-invitation{bottom:14px;display:block;padding:22px}.ob-invitation>img{width:54px;height:54px;float:left;margin-right:12px}.ob-invitation small{font-size:8px;padding-top:6px}.ob-invitation h2{font-size:22px;padding-right:10px}.ob-invitation p{clear:both;padding-top:12px}.ob-invite-actions{gap:6px 14px}.ob-launch{width:100%}.ob-invite-note{line-height:1.5;margin-top:6px}.ob-classic-restore{right:12px;bottom:16px;max-width:calc(100% - 24px)}.ob-welcome{padding:26px 20px}.ob-welcome>img{width:78px;height:78px}}
@media(prefers-reduced-motion:reduce){.ob-invitation,.ob-welcome,.ob-classic-restore{scroll-behavior:auto;transition:none!important}}