:root{--bg:#f4f6fb;--card:#fff;--line:#dfe5f2;--text-main:#1c2b4b;--text-soft:#7f8da8;--primary:#3f6ce1;--primary-soft:#ebf1ff;--success:#2a9d5c;--danger:#ce4d4d;--warning:#bd8f2f}*{box-sizing:border-box}html,body{background:radial-gradient(circle at 0% 0%, #f9fbff 0%, var(--bg) 45%, #edf1fb 100%);color:var(--text-main);margin:0;padding:0;font-family:PingFang SC,Noto Sans SC,Segoe UI,sans-serif}a{color:inherit}.home-wrap{place-items:center;min-height:100vh;padding:24px;display:grid}.home-card{background:var(--card);border:1px solid var(--line);border-radius:18px;width:min(420px,100%);padding:48px 28px;box-shadow:0 8px 24px #4060a80f}.home-brand{flex-direction:column;align-items:center;gap:20px;display:flex}.home-logo{object-fit:contain}.home-title{letter-spacing:2px;color:var(--text-soft);margin:0;font-size:28px;font-weight:600}.checkout-page{justify-content:center;min-height:100vh;padding:24px 12px;display:flex}.checkout-card{background:var(--card);border:1px solid var(--line);border-radius:18px;width:min(410px,100%);padding:20px 16px 24px;box-shadow:0 8px 24px #4060a80f}.checkout-head{justify-content:space-between;align-items:center;margin-bottom:18px;display:flex}.back-link{color:var(--text-main);cursor:pointer;background:0 0;border:0;padding:4px 0;font-weight:600}.head-right{align-items:center;gap:8px;display:flex}.lang-btn{border:1px solid var(--line);color:var(--text-soft);cursor:pointer;background:0 0;border-radius:6px;padding:3px 8px;font-size:12px;font-weight:600}.lang-btn:hover{background:var(--primary-soft);color:var(--primary);border-color:var(--primary-soft)}.order-status{color:var(--text-soft);background:#eff3fb;border-radius:999px;padding:4px 10px;font-size:12px}.status-init{color:#4d668f}.status-pending{color:var(--warning);background:#fff7e8}.status-paid{color:var(--success);background:#eafaf0}.status-expired{color:var(--danger);background:#fff0f0}.checkout-title{letter-spacing:.2px;margin:0 0 18px;font-size:36px}.amount-panel{text-align:center;background:#f5f8ff;border-radius:14px;margin-bottom:14px;padding:20px 12px}.amount-label{color:#7382a1;margin:0;font-size:22px;font-weight:600}.amount-value{color:var(--primary);margin:10px 0 0;font-size:48px;font-weight:800}.address-panel{border:1px solid var(--line);border-radius:14px;padding:14px}.address-label{text-align:center;color:var(--text-soft);margin:0 0 12px;font-size:22px;font-weight:600}.address-hint{text-align:center;color:var(--text-soft);margin:0;padding:24px 12px;font-size:16px;font-weight:600}.address-row{align-items:center;gap:8px;margin-bottom:14px;display:flex}.address-code{word-break:break-all;background:#f6f8fd;border-radius:10px;flex:1;min-height:44px;padding:12px;font-size:14px;display:block}.icon-btn{color:#4c69b0;cursor:pointer;background:#eef3ff;border:0;border-radius:8px;padding:8px 10px;font-weight:700}.icon-btn:disabled{opacity:.5;cursor:not-allowed}.qr-wrap{justify-content:center;margin:6px 0 8px;display:flex}.qr-wrap img{border-radius:6px;width:220px;height:220px}.qr-toggle{color:#4d69a8;cursor:pointer;background:0 0;border:0;margin:0 auto;font-size:14px;font-weight:600;display:block}.qr-toggle:disabled{opacity:.5;cursor:not-allowed}.expired-text{text-align:center;color:var(--text-soft);margin:10px 0 0;font-weight:600}.expired-text.danger{color:var(--danger)}.helper-link{color:#657aa8;width:fit-content;margin:20px auto 0;font-size:14px;text-decoration:underline;display:block}.action-row{flex-direction:column;gap:10px;margin-top:16px;display:flex}.btn-primary,.btn-secondary{text-align:center;cursor:pointer;border:0;border-radius:12px;padding:12px 16px;font-size:16px;font-weight:700;text-decoration:none}.btn-primary{background:var(--primary-soft);color:var(--primary)}.btn-secondary{color:#4a5f8e;background:#eef1f7}.notice{text-align:center;color:var(--text-soft);margin-top:12px;font-size:13px}.error{color:var(--danger);margin-top:10px;font-size:13px}@media (max-width:480px){.checkout-title{font-size:30px}.amount-label,.address-label{font-size:18px}.amount-value{font-size:38px}}