:root{color:#111827;background:#f5f7fa;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0}button,a{font:inherit}.page-shell{background:linear-gradient(135deg,#eef2ff 0%,#f5f7fa 60%,#f0fdf4 100%);flex-direction:column;align-items:center;min-height:100vh;padding:32px 16px 48px;display:flex}.hero-card{background:#fff;border:1px solid #00000012;border-radius:28px;width:min(100%,520px);padding:34px;box-shadow:0 4px 32px #2563eb14}.eyebrow{color:#2563eb;letter-spacing:.18em;font-size:12px;font-weight:800}h1{color:#111827;margin:12px 0 10px;font-size:clamp(32px,7vw,52px);line-height:1.02}.subtitle{color:#6b7280;margin:0 0 28px;line-height:1.7}.amount-grid{grid-template-columns:repeat(5,1fr);gap:10px;margin-bottom:18px;display:grid}.amount{color:#374151;cursor:pointer;background:#f9fafb;border:1px solid #e5e7eb;border-radius:18px;flex-direction:column;justify-content:center;align-items:center;gap:2px;min-height:66px;font-size:22px;font-weight:800;display:flex}.amount small{color:#9ca3af;letter-spacing:0;font-size:10px;font-weight:500}.amount span{color:#2563eb;margin-right:2px;font-size:14px}.amount.active{background:#eff6ff;border-color:#2563eb;box-shadow:inset 0 0 0 1px #bfdbfe}.amount:disabled,.primary:disabled{opacity:.5;cursor:not-allowed}.primary{color:#fff;cursor:pointer;background:linear-gradient(135deg,#2563eb,#0ea5e9);border:0;border-radius:18px;width:100%;min-height:58px;font-size:18px;font-weight:900;box-shadow:0 4px 16px #2563eb40}.primary:hover:not(:disabled){box-shadow:0 6px 20px #2563eb59}.status-card,.error-box{background:#f9fafb;border:1px solid #e5e7eb;border-radius:20px;margin-top:20px;padding:18px}.status-card h2{color:#111827;margin:0 0 8px;font-size:20px}.status-card p{color:#6b7280;word-break:break-all;margin:0 0 10px}.status-card a{color:#2563eb}.paying{align-items:center;gap:16px;display:flex}.success{background:#f0fdf4;border-color:#6ee7b7}.success h2{color:#065f46}.code-box{color:#1e3a8a;letter-spacing:.08em;text-align:center;background:#dbeafe;border-radius:16px;margin-top:14px;padding:16px;font-size:24px;font-weight:900}.error-box{color:#dc2626;background:#fef2f2;border:1px solid #fecaca}.spinner{border:3px solid #e5e7eb;border-top-color:#2563eb;border-radius:999px;flex:none;width:34px;height:34px;animation:.9s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.section-wrap{width:min(100%,960px);margin:0 auto;padding:32px 16px 48px}.detail-wrap{max-width:680px}.back-link{color:#2563eb;margin-bottom:16px;font-size:13px;text-decoration:none;display:inline-block}.back-link:hover{text-decoration:underline}.page-title{color:#111827;margin:4px 0 6px;font-size:clamp(24px,5vw,36px)}.page-desc{color:#6b7280;margin:0 0 24px}.section-title{color:#374151;margin:0 0 16px;font-size:18px;font-weight:700}.product-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px;display:grid}.product-card{color:#111827;background:#fff;border:1px solid #e5e7eb;border-radius:20px;padding:20px 16px;text-decoration:none;transition:border-color .15s,box-shadow .15s;display:block;position:relative;box-shadow:0 2px 8px #0000000a}.product-card:hover{border-color:#2563eb;box-shadow:0 4px 16px #2563eb1f}.product-name{color:#374151;margin-bottom:6px;font-size:14px;font-weight:700}.product-price{color:#111827;font-size:28px;font-weight:900}.product-price span{color:#2563eb;margin-right:2px;font-size:14px}.product-tagline{color:#9ca3af;margin-top:4px;font-size:11px}.product-features-mini{color:#6b7280;flex-direction:column;gap:3px;margin:10px 0 0;padding:0;font-size:11px;list-style:none;display:flex}.product-badge{color:#fff;background:#2563eb;border-radius:6px;padding:2px 8px;font-size:10px;font-weight:800;position:absolute;top:12px;right:12px}.product-card-cta{color:#2563eb;margin-top:14px;font-size:12px;font-weight:700}.detail-card{background:#fff;border:1px solid #e5e7eb;border-radius:24px;padding:28px;position:relative;box-shadow:0 4px 20px #0000000f}.detail-title{color:#111827;margin:14px 0 4px;font-size:clamp(26px,5vw,40px)}.detail-desc{color:#6b7280;margin:12px 0 20px;line-height:1.7}.product-price.large{font-size:40px;font-weight:900}.features-heading{color:#374151;margin-bottom:10px;font-size:15px}.features-list{flex-direction:column;gap:8px;margin:0 0 20px;padding:0;list-style:none;display:flex}.features-list li{color:#374151;gap:10px;font-size:14px;display:flex}.features-list li span{color:#059669;font-weight:700}.service-notice{background:#f9fafb;border:1px solid #f3f4f6;border-radius:14px;margin-bottom:20px;padding:14px 16px}.service-notice p{color:#6b7280;margin:0 0 6px;font-size:13px}.service-notice p:last-child{margin:0}.product-chip{color:#6b7280;background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:7px 14px;font-size:12px;text-decoration:none}.product-chip:hover{color:#2563eb;border-color:#2563eb}.btn-link{text-align:center;margin-bottom:0;line-height:58px;text-decoration:none;display:block}.shop-info{color:#6b7280;flex-wrap:wrap;justify-content:center;gap:24px;padding:16px;font-size:13px;display:flex}.info-item{align-items:center;gap:6px;display:flex}.login-form{flex-direction:column;gap:14px;margin-top:24px;display:flex}.login-form input{color:#111827;background:#f9fafb;border:1px solid #e5e7eb;border-radius:14px;outline:none;width:100%;padding:14px 16px;font-size:16px}.login-form input:focus{background:#fff;border-color:#2563eb}.login-form input::placeholder{color:#9ca3af}.logout-btn{color:#6b7280;cursor:pointer;background:0 0;border:1px solid #e5e7eb;border-radius:10px;padding:4px 12px;font-size:12px}.logout-btn:hover{color:#2563eb;border-color:#2563eb}.product-detail{color:#6b7280;background:#f9fafb;border-radius:14px;margin:-8px 0 16px;padding:10px 14px;font-size:13px}.legal{color:#9ca3af;text-align:center;margin-top:20px;font-size:11px;line-height:1.6}@media (width<=520px){.hero-card{padding:24px}.amount-grid{grid-template-columns:repeat(2,1fr)}.amount:last-child{grid-column:span 2}}
