:root{--bg:#f6f8ff;--ink:#11162a;--muted:#6d7590;--line:#e6e9f4;--purple:#6d45ff;--cyan:#16c8e8;--green:#12a66a;--red:#d84a62;--yellow:#b67b00}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif;background:radial-gradient(circle at 20% 0,#e9e2ff 0,transparent 30%),radial-gradient(circle at 90% 10%,#d9fbff 0,transparent 28%),var(--bg);color:var(--ink)}nav{height:68px;display:flex;align-items:center;justify-content:space-between;padding:0 max(22px,calc((100vw - 1120px)/2));background:#ffffffcc;backdrop-filter:blur(12px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}.brand{font-weight:900;font-size:24px;text-decoration:none;color:var(--ink)}.brand span{color:var(--purple)}.pill{font-size:13px;background:#eef0ff;border:1px solid #dddfff;padding:8px 12px;border-radius:999px;color:#4a4f70}main{max-width:1120px;margin:0 auto;padding:48px 22px 80px}.hero{display:grid;grid-template-columns:1.6fr .7fr;gap:28px;align-items:center;margin:30px 0 50px}.hero h1{font-size:clamp(44px,7vw,76px);line-height:.98;margin:10px 0 18px;letter-spacing:-.055em}.hero h1 span{background:linear-gradient(90deg,var(--purple),var(--cyan));-webkit-background-clip:text;color:transparent}.hero p{font-size:18px;color:var(--muted);max-width:680px;line-height:1.65}.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:12px;font-weight:800;color:var(--purple)}.hero-card,.card{background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:0 16px 45px #33426a10}.hero-card{padding:28px;display:grid;gap:8px}.hero-card strong{font-size:26px}.hero-card small{color:var(--muted)}.grid2,.pay-wrap{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;margin-bottom:24px}.card{padding:28px;margin-bottom:24px}h2{margin-top:0}label{display:block;font-size:13px;font-weight:700;margin:16px 0 7px;color:#505974}input,textarea{width:100%;padding:13px 14px;border:1px solid #dfe3ef;border-radius:12px;background:#fbfcff;font:inherit;outline:none}input:focus,textarea:focus{border-color:#8b74ff;box-shadow:0 0 0 3px #8b74ff20}textarea{min-height:90px;resize:vertical}.inline{display:flex;gap:8px}.inline button,.share button{white-space:nowrap}.primary,button{border:0;border-radius:12px;padding:12px 16px;font-weight:800;cursor:pointer;background:#eceefe;color:#313853}.primary{background:linear-gradient(90deg,var(--purple),#7658ff);color:white;box-shadow:0 10px 24px #6d45ff38;margin-top:18px}.big{font-size:18px;width:100%;padding:16px}.steps ol{line-height:2.1;color:#47506d}.section-title,.invoice-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse}th,td{padding:13px 10px;border-bottom:1px solid var(--line);text-align:left;font-size:14px}th{color:var(--muted)}a{color:var(--purple)}.status{display:inline-flex;padding:6px 9px;border-radius:999px;font-size:11px;font-weight:900}.status.unpaid{background:#fff5d9;color:#996600}.status.paid{background:#dcfaec;color:#08794a}.muted,.message{color:var(--muted)}.message{min-height:22px;margin-top:12px;font-size:14px}.message.error{color:var(--red)}.message.success{color:var(--green)}.invoice h1{margin:8px 0}.invoice code,.details code{overflow-wrap:anywhere}.amount{display:flex;align-items:baseline;gap:8px;margin:38px 0}.amount strong{font-size:52px;letter-spacing:-.04em}.amount span{font-weight:800;color:var(--muted)}.details{display:grid;gap:15px;margin:24px 0}.details div{display:grid;gap:4px}.details span{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.share{display:flex;gap:8px;margin-top:22px}.paid-box{background:#e6fff2;color:#08794a;padding:18px;border-radius:14px;font-weight:800}.receipt{text-align:center;max-width:760px;margin:40px auto}.receipt .check{width:70px;height:70px;margin:0 auto 20px;display:grid;place-items:center;border-radius:50%;background:#dcfaec;color:#08794a;font-size:36px;font-weight:900}.receipt .details{text-align:left}footer{text-align:center;color:var(--muted);font-size:12px;padding:32px}@media(max-width:780px){.hero,.grid2,.pay-wrap{grid-template-columns:1fr}.hero{margin-top:12px}.hero-card{display:none}.inline,.share{flex-direction:column}.card{padding:20px}.amount strong{font-size:42px}main{padding-top:24px}}

/* V0.2 multilingual UI */
.nav-actions{display:flex;align-items:center;gap:10px}.language-select{width:auto;min-width:112px;padding:8px 34px 8px 11px;border:1px solid #dddfff;border-radius:999px;background:#fff;color:#343a57;font:inherit;font-size:13px;font-weight:700;outline:none}.language-select:focus{border-color:#8b74ff;box-shadow:0 0 0 3px #8b74ff20}.hero h1 .plain{background:none;-webkit-background-clip:initial;color:var(--ink)}.hero h1 .gradient{background:linear-gradient(90deg,var(--purple),var(--cyan));-webkit-background-clip:text;color:transparent}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:560px){nav{height:auto;min-height:68px;padding-top:10px;padding-bottom:10px;gap:10px}.nav-actions{gap:6px}.language-select{min-width:96px;max-width:112px}.pill{display:none}.brand{font-size:22px}}

/* V0.2.1 payment UX + safety */
.status.expired{background:#f2f3f7;color:#6c7286}.compact{margin:4px 0 0}.payment-share{display:grid;grid-template-columns:180px 1fr;gap:20px;align-items:center;margin-top:24px;padding-top:22px;border-top:1px solid var(--line)}.qr-card{display:grid;gap:8px;text-align:center}.qr-card img{width:180px;max-width:100%;aspect-ratio:1;border:1px solid var(--line);border-radius:16px;background:#fff;padding:8px}.qr-card small{color:var(--muted)}.share-panel{min-width:0}.button-row,.receipt-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.secondary-button,.button-link{border:0;border-radius:12px;padding:12px 16px;font-weight:800;cursor:pointer;background:#eceefe;color:#313853;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}.button-link{background:linear-gradient(90deg,var(--purple),#7658ff);color:#fff}.button-link.secondary{background:#eef0ff;color:#3b4160}.expired-box{background:#f5f5f8;color:#5c6276;padding:18px;border-radius:14px;line-height:1.55}.network-note{margin-top:22px;padding:14px;border-radius:14px;background:#f7f8ff;border:1px solid var(--line)}.network-note p{margin:7px 0 0;color:var(--muted);line-height:1.5}.receipt-actions{justify-content:center;margin-top:28px}.mini-link{font-weight:800;text-decoration:none}.table-wrap td:last-child{white-space:nowrap}
@media(max-width:780px){.payment-share{grid-template-columns:1fr}.qr-card img{width:min(260px,85vw);justify-self:center}.share-panel{width:100%}.button-row>*{flex:1 1 140px}.receipt-actions>*{width:100%}}


/* V0.2.2 universal wallet */
.wallet-box{margin:22px 0 14px;padding:16px;border:1px solid #dddff0;border-radius:18px;background:#fafaff;display:grid;grid-template-columns:1fr auto;gap:8px 14px;align-items:center}.wallet-box-main{display:grid;gap:4px}.wallet-box-main>span{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:#767b91}.wallet-box-main>b{font-size:1rem}.wallet-box-main code{font-size:.86rem;color:#596078;min-height:1.2em}.wallet-box button{margin:0;white-space:nowrap}.wallet-box small{grid-column:1/-1;color:#747a91;line-height:1.45}.wallet-box button{background:#f0edff;color:#302c50;border:1px solid #ded8ff}.wallet-box button:hover{background:#e8e2ff}
@media(max-width:560px){.wallet-box{grid-template-columns:1fr}.wallet-box button{width:100%}.wallet-box small{grid-column:1}}