*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Inter,sans-serif;background-color:#0a0a0a;min-height:100vh;color:#fff;overflow-x:hidden;position:relative}body:before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 20% 50%,rgba(34,197,94,.15) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(16,185,129,.12) 0%,transparent 50%),radial-gradient(circle at 40% 80%,rgba(52,211,153,.1) 0%,transparent 50%);animation:backgroundMove 20s ease-in-out infinite;z-index:-1}.container:not([hidden]){max-width:100%;min-height:100vh;display:flex;flex-direction:column;position:relative}.header{padding:max(env(safe-area-inset-top),20px) 24px 0;text-align:center}.welcome-text{font-size:clamp(28px,8vw,36px);font-weight:800;background:linear-gradient(135deg,#fff,#86efac);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:8px;animation:slideInDown .8s ease}.subtitle{font-size:16px;color:#ffffffb3;font-weight:500;animation:slideInDown .8s ease .2s both}.main-content{flex:1;display:flex;flex-direction:column;justify-content:flex-start;align-items:center;padding:40px 24px;gap:32px}.qr-section{top:20px;position:sticky;z-index:100;width:100%;max-width:320px;animation:scaleIn .8s ease .4s both}.qr-container{background:#22c55e14;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(34,197,94,.2);border-radius:24px;padding:32px;position:relative;overflow:hidden}.qr-container:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(45deg,transparent,rgba(34,197,94,.06),transparent);animation:shimmer 3s ease-in-out infinite}.qr-code{width:100%;aspect-ratio:1;background:#fffffff2;border-radius:16px;padding:16px;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 32px #0000004d;position:relative;overflow:hidden}.qr-code:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(45deg,transparent 48%,rgba(34,197,94,.1) 50%,transparent 52%);animation:qrShine 4s ease-in-out infinite}.qr-code img{width:100%;height:100%;object-fit:contain}.loading-spinner{width:48px;height:48px;border:3px solid rgba(34,197,94,.2);border-top:3px solid #22c55e;border-radius:50%;animation:spin 1s linear infinite}.error-message{color:#f87171;font-size:14px;margin-top:16px;padding:12px 16px;background:#ef44441a;border-radius:12px;border:1px solid rgba(239,68,68,.2);display:none}.instructions{width:100%;max-width:600px;animation:slideInUp .8s ease .3s both}.instructions-details{background:#22c55e14;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(34,197,94,.2);border-radius:16px;overflow:hidden;transition:all .4s cubic-bezier(.4,0,.2,1)}.instructions-details[open]{background:#22c55e1f;border-color:#22c55e4d}.instructions-summary{padding:20px;font-size:1.1em;font-weight:600;color:#fff;cursor:pointer;list-style:none;display:flex;align-items:center;gap:12px;-webkit-user-select:none;user-select:none;position:relative}.instructions-summary::-webkit-details-marker{display:none}.instructions-summary:after{content:"▼";margin-left:auto;transform:rotate(-90deg);transition:transform .4s cubic-bezier(.4,0,.2,1);font-size:.9em;color:#ffffffb3}.instructions-details[open] .instructions-summary:after{transform:rotate(0)}.instructions-summary:hover{background:#22c55e1a;transform:translateY(-1px)}.instructions-content{max-height:0;overflow:hidden;transition:max-height .5s,padding .5s,opacity .3s ease;opacity:0;padding:0 20px}.instructions-details[open] .instructions-content{max-height:800px;opacity:1;padding:0 20px 24px}.instructions-inner{padding-top:4px}.quick-steps{background:#22c55e14;border:1px solid #e0f2fe;border-radius:12px;padding:20px;margin-bottom:25px}.quick-steps-title{font-size:16px;font-weight:600;color:#fff;margin-bottom:12px;display:flex;align-items:center;gap:8px}.step-list{display:flex;flex-direction:column;gap:8px}.step-item{display:flex;align-items:center;gap:10px;font-size:14px;color:#fff}.step-number{background:#0369a1;color:#fff;width:20px;height:20px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;flex-shrink:0}.demo-container{margin-bottom:8px}.demo-wrapper{position:relative;padding:10px;overflow:hidden}.demo-video{width:100%;height:auto;border-radius:12px;box-shadow:0 4px 16px #0003;transition:opacity .3s ease}.demo-loading{display:flex;flex-direction:column;align-items:center;gap:12px;padding:32px;color:#ffffffb3}.demo-loading p{font-size:14px;font-weight:500}.bottom-section{padding:0 24px max(env(safe-area-inset-bottom),24px);text-align:center;margin-top:auto}.help-text{font-size:14px;color:#ffffff80;animation:fadeIn .8s ease 1s both}.help-text a{color:#86efac;text-decoration:none;font-weight:500;transition:color .3s ease}.help-text a:hover{color:#22c55e;text-decoration:underline}@keyframes backgroundMove{0%,to{transform:translate(0) translateY(0)}33%{transform:translate(-20px) translateY(-10px)}66%{transform:translate(20px) translateY(10px)}}@keyframes shimmer{0%{transform:translate(-100%) translateY(-100%)}to{transform:translate(100%) translateY(100%)}}@keyframes qrShine{0%,to{transform:translate(-100%) translateY(-100%)}50%{transform:translate(100%) translateY(100%)}}@keyframes slideInDown{0%{opacity:0;transform:translateY(-30px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media(max-width:480px){.main-content{padding:24px 16px;gap:24px}.qr-container{padding:24px}.instructions-summary{padding:16px}.instructions-details[open] .instructions-content{padding:0 16px 20px}}@media(orientation:landscape)and (max-height:600px){.main-content{flex-direction:row;align-items:flex-start;gap:40px;padding:20px 24px;justify-content:center}.qr-section{max-width:280px}.instructions{max-width:400px}.header{padding:16px 24px 0}.welcome-text{font-size:24px}.subtitle{font-size:14px}.instructions-content,.instructions-details[open] .instructions-content{max-height:400px}}@media(prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}@media(prefers-contrast:high){.qr-container{border:2px solid rgba(34,197,94,.5)}}.instructions-summary:focus{outline:2px solid #86efac;outline-offset:2px}.pin-code{font-size:clamp(28px,8vw,36px);font-weight:700;letter-spacing:.12em;font-variant-numeric:tabular-nums;color:#0a0a0a;text-align:center;word-break:break-all}.step-item.is-pressed{transform:translateY(-1px) scale(.98)}.demo-fallback{padding:24px;text-align:center;color:#fffc}.demo-fallback-title{font-weight:600}.landing:not([hidden]){max-width:22rem;margin:0 auto;min-height:100dvh;display:grid;place-content:center;padding:1.5rem;text-align:center}.landing h1{margin-bottom:.75rem;font-size:1.25rem;font-weight:600}.landing p{font-size:1rem;line-height:1.5;color:#ffffffa6}