:root{--navy:#0D1B2A;--navy2:#162336;--navy3:#1E3352;--blue:#3D6EA8;--blue-lt:#5B8FCC;--white:#F0F4FA;--gray:#8A9AB5;--gray-lt:#B8C4D8;--gold:#E8B84B;--green:#34C77B;--red:#E05555;--radius:12px;--radius-sm:8px;--shadow:0 4px 24px rgba(0,0,0,0.4);--trans:0.18s ease;--font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;--font-mono:"SF Mono","Fira Code",monospace;}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{font-size:16px;scroll-behavior:smooth;}
body{font-family:var(--font);background:var(--navy);color:var(--white);min-height:100dvh;display:flex;flex-direction:column;-webkit-font-smoothing:antialiased;}
.lang-bar{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;border-bottom:1px solid rgba(255,255,255,0.06);position:sticky;top:0;z-index:100;background:rgba(13,27,42,0.92);backdrop-filter:blur(12px);}
.brand-mark{font-size:1.1rem;font-weight:800;letter-spacing:0.08em;color:var(--blue-lt);}
.lang-switcher{display:flex;gap:4px;flex-wrap:wrap;}
.lang-btn{background:none;border:1px solid rgba(255,255,255,0.12);color:var(--gray);padding:4px 9px;border-radius:6px;font-size:0.72rem;font-weight:600;letter-spacing:0.05em;cursor:pointer;transition:all var(--trans);}
.lang-btn:hover{border-color:var(--blue-lt);color:var(--white);}
.lang-btn.active{background:var(--blue);border-color:var(--blue);color:#fff;}
.night-banner{background:#1A2744;border-bottom:1px solid rgba(93,140,220,0.3);color:var(--gray-lt);font-size:0.82rem;text-align:center;padding:8px 16px;}
.install-banner{background:var(--navy3);border-bottom:1px solid rgba(255,255,255,0.08);padding:10px 20px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:0.85rem;color:var(--gray-lt);}
.btn-install{background:var(--blue);color:#fff;border:none;padding:6px 14px;border-radius:var(--radius-sm);font-size:0.8rem;font-weight:600;cursor:pointer;white-space:nowrap;flex-shrink:0;}
main{flex:1;display:flex;flex-direction:column;align-items:center;padding:0 20px 40px;width:100%;max-width:560px;margin:0 auto;}
.hero{display:flex;flex-direction:column;align-items:center;text-align:center;padding-top:48px;width:100%;}
.hero-tagline{font-size:clamp(2rem,8vw,3rem);font-weight:900;line-height:1.1;letter-spacing:-0.02em;color:var(--white);margin-bottom:20px;}
.hero-tagline em{font-style:normal;color:var(--blue-lt);}
.hero-subtitle{font-size:1rem;line-height:1.6;color:var(--gray-lt);max-width:400px;margin-bottom:28px;}
.privacy-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(52,199,123,0.12);border:1px solid rgba(52,199,123,0.25);color:var(--green);font-size:0.82rem;font-weight:600;padding:6px 14px;border-radius:100px;margin-bottom:32px;}
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--blue);color:#fff;border:none;border-radius:var(--radius);font-size:1.05rem;font-weight:700;padding:16px 32px;cursor:pointer;transition:all var(--trans);width:100%;max-width:360px;box-shadow:0 4px 20px rgba(61,110,168,0.4);}
.btn-primary:hover:not(:disabled){background:var(--blue-lt);transform:translateY(-1px);box-shadow:0 6px 28px rgba(61,110,168,0.5);}
.btn-primary:disabled{opacity:0.55;cursor:not-allowed;}
.btn-capture{margin-bottom:16px;}
.btn-another{margin-top:24px;background:var(--navy3);box-shadow:none;border:1px solid rgba(255,255,255,0.1);}
.btn-another:hover:not(:disabled){background:var(--navy2);box-shadow:none;}
.error-msg{color:var(--red);font-size:0.88rem;min-height:20px;text-align:center;margin-top:4px;}
.how-it-works{width:100%;margin-top:56px;padding-top:40px;border-top:1px solid rgba(255,255,255,0.06);}
.how-it-works h2{font-size:0.8rem;font-weight:700;letter-spacing:0.12em;text-transform:uppercase;color:var(--gray);margin-bottom:24px;}
.steps{list-style:none;display:flex;flex-direction:column;gap:14px;}
.steps li{display:flex;align-items:flex-start;gap:14px;font-size:0.95rem;color:var(--gray-lt);line-height:1.5;}
.step-num{flex-shrink:0;width:28px;height:28px;background:var(--navy3);border:1px solid rgba(255,255,255,0.1);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:0.75rem;font-weight:700;color:var(--blue-lt);margin-top:1px;}
.cert-card{background:var(--navy2);border:1px solid rgba(93,143,204,0.25);border-radius:var(--radius);padding:24px;width:100%;margin-top:40px;box-shadow:var(--shadow);}
.cert-header{display:flex;align-items:center;gap:10px;margin-bottom:20px;flex-wrap:wrap;}
.cert-logo{font-size:0.85rem;font-weight:800;letter-spacing:0.1em;color:var(--blue-lt);background:rgba(93,143,204,0.12);padding:4px 10px;border-radius:6px;}
.cert-title-text{font-size:0.95rem;font-weight:700;color:var(--white);flex:1;}
.night-badge{font-size:0.72rem;background:rgba(26,39,68,0.8);border:1px solid rgba(93,143,204,0.3);color:var(--gray-lt);padding:3px 8px;border-radius:100px;}
.cert-file{font-size:0.85rem;color:var(--gray);margin-bottom:20px;word-break:break-all;padding:8px 12px;background:rgba(0,0,0,0.2);border-radius:var(--radius-sm);}
.cert-row{display:flex;flex-direction:column;gap:4px;margin-bottom:16px;}
.cert-row label{font-size:0.72rem;font-weight:600;letter-spacing:0.1em;text-transform:uppercase;color:var(--gray);}
.cert-row span,.cert-row a{font-size:0.92rem;color:var(--white);word-break:break-all;}
.cert-row a{color:var(--blue-lt);text-decoration:none;}
.cert-row a:hover{text-decoration:underline;}
.cert-hash-wrap{display:flex;align-items:flex-start;gap:8px;flex-wrap:wrap;}
.cert-hash{font-family:var(--font-mono);font-size:0.75rem;color:var(--green);word-break:break-all;flex:1;background:rgba(52,199,123,0.06);padding:6px 10px;border-radius:var(--radius-sm);border:1px solid rgba(52,199,123,0.15);}
.btn-copy{background:none;border:1px solid rgba(255,255,255,0.12);color:var(--gray-lt);padding:5px 10px;border-radius:var(--radius-sm);font-size:0.75rem;cursor:pointer;transition:all var(--trans);white-space:nowrap;flex-shrink:0;}
.btn-copy:hover{border-color:var(--blue-lt);color:var(--white);}
.btn-copy.copied{border-color:var(--green);color:var(--green);}
.reward{color:var(--gold)!important;font-weight:700;font-size:1rem!important;}
.footer{text-align:center;padding:24px 20px;border-top:1px solid rgba(255,255,255,0.05);margin-top:auto;}
.footer p{font-size:0.78rem;color:var(--gray);line-height:1.6;margin-bottom:6px;}
.footer-links a{color:var(--gray);text-decoration:none;transition:color var(--trans);}
.footer-links a:hover{color:var(--blue-lt);}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;}}
@media(min-width:640px){main{padding:0 32px 60px;}.hero{padding-top:72px;}.btn-primary{font-size:1.1rem;padding:18px 36px;}}