:root{--red:#c8102e;--red-dark:#9e0b22;--red-soft:#fdeef0;--gold:#e5b769;--gold-soft:#fdf4e3;--ink:#23262b;--muted:#6b7078;--hair:#e8e2da;--bg:#fbf7f3;--card:#fff;--radius:14px;--shadow:0 2px 10px #23262b0f}*,:before,:after{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Arial,sans-serif;font-size:15px;line-height:1.6;overflow-x:hidden}h1,h2{margin:0;font-weight:700}img{max-width:100%;display:block}b{color:var(--red);font-weight:700}small{color:var(--muted);font-size:12px}button{font-family:inherit}.page{max-width:480px;min-height:100vh;padding:0 14px calc(24px + env(safe-area-inset-bottom));background:var(--bg);margin:0 auto}.header{padding:calc(22px + env(safe-area-inset-top)) 4px 16px;text-align:center}.header h1{letter-spacing:.5px;color:var(--red-dark);font-size:21px}.header .sub{color:var(--muted);letter-spacing:1px;margin-top:6px;font-size:12.5px}.steps{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);align-items:flex-start;margin:4px 0 18px;padding:14px 6px 12px;display:flex}.step-item{color:var(--muted);white-space:nowrap;flex-direction:column;flex:1 1 0;align-items:center;gap:6px;font-size:11.5px;display:flex;position:relative}.step-item .line{background:var(--hair);width:100%;height:2px;position:absolute;top:11px;left:-50%}.step-item:first-child .line{display:none}.step-item .dot{z-index:1;width:23px;height:23px;color:var(--muted);background:#f1eeea;border-radius:50%;justify-content:center;align-items:center;font-size:12px;font-weight:700;display:flex;position:relative}.step-item.active{color:var(--red);font-weight:600}.step-item.active .dot{background:var(--red);color:#fff;box-shadow:0 0 0 4px 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var(--red-soft);border-top-color:var(--red);border-radius:50%;width:34px;height:34px;animation:.85s linear infinite yft8-spin}.loading-box .txt{color:var(--muted);font-size:13px;line-height:1.7}@keyframes yft8-spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion:reduce){.spinner{animation-duration:2s}}.result-big{text-align:center;flex-direction:column;align-items:center;padding:20px 6px 16px;display:flex}.result-big .icon{margin-bottom:10px;font-size:44px;line-height:1.1}.result-big h2{color:var(--ink);margin-bottom:12px;font-size:19px}.result-big .desc{color:var(--muted);font-size:13.5px;line-height:1.95}.banner{background:var(--gold-soft);color:#8a6320;border-radius:10px;padding:10px 14px;font-size:13.5px;font-weight:600}.banner.error{background:var(--red-soft);color:var(--red-dark)}.error{color:var(--red)}.warn{color:#b06d10}.footer-note{text-align:center;color:#a7a19a;padding:18px 8px 6px;font-size:11.5px;line-height:1.7}@media (max-width:340px){.page{padding-left:10px;padding-right:10px}.prize-row{flex-direction:column;align-items:flex-start;gap:4px}.prize-row>span:last-child{text-align:left}.step-item{font-size:10.5px}.upload-box .tip{font-size:11px}}