:root{--bg:#0f1115;--bg-card:#181b22;--bg-input:#21252e;--primary:#4f7cff;--primary-press:#3d63d6;--text:#e8eaed;--text-dim:#9aa0aa;--success:#2ecc71;--danger:#ff5c5c;--border:#2a2f3a;--radius:14px}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:15px;line-height:1.5}a{color:var(--primary);text-decoration:none}button{font-family:inherit;cursor:pointer;border:none;outline:none}.app-shell{max-width:480px;margin:0 auto;min-height:100vh;padding:16px;display:flex;flex-direction:column}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:18px}.input{width:100%;background:var(--bg-input);border:1px solid var(--border);border-radius:10px;color:var(--text);padding:14px;font-size:16px;outline:none}.input:focus{border-color:var(--primary)}.btn{width:100%;background:var(--primary);color:#fff;border-radius:10px;padding:14px;font-size:16px;font-weight:600}.btn:active{background:var(--primary-press)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text-dim)}.title{font-size:22px;font-weight:700;margin:0 0 4px}.subtitle{color:var(--text-dim);font-size:13px;margin:0 0 24px}.badge{display:inline-flex;gap:4px;font-size:12px;color:var(--success)}.badge,.row{align-items:center}.row{display:flex;justify-content:space-between}.muted{color:var(--text-dim)}.code-box{background:var(--bg-input);border:1px dashed var(--primary);border-radius:10px;padding:18px;text-align:center;font-size:32px;letter-spacing:6px;font-weight:700;color:var(--success)}.list{display:flex;flex-direction:column;gap:10px}.list-item{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:14px;display:flex;align-items:center;justify-content:space-between}.list-item:active{border-color:var(--primary)}.tag{font-size:12px;color:var(--text-dim);background:var(--bg-input);border-radius:6px;padding:2px 8px}.toast{position:fixed;left:50%;bottom:40px;transform:translateX(-50%);background:#000;color:#fff;padding:10px 18px;border-radius:20px;font-size:14px;opacity:.92;z-index:50}.spinner{width:16px;height:16px;border:2px solid hsla(0,0%,100%,.3);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;display:inline-block;vertical-align:middle}@keyframes spin{to{transform:rotate(1turn)}}@keyframes blink{0%,49%{opacity:1}50%,to{opacity:.15}}.blink{animation:blink 1s step-start infinite}@keyframes breathe{0%,to{opacity:1;box-shadow:0 4px 14px rgba(56,189,248,.35);transform:scale(1)}50%{opacity:.7;box-shadow:0 4px 28px rgba(129,140,248,.8);transform:scale(1.03)}}.breathe{animation:breathe 1.8s ease-in-out infinite}