:root{--bg: radial-gradient(circle at 20% 20%, #f7fbff 0, #edf2ff 25%, #f6f7fb 60%, #fdfbf6 100%);--panel: rgba(255, 255, 255, .72);--border: rgba(69, 92, 255, .18);--text: #141726;--muted: #566178;--accent: #4d6bfe;--accent-2: #52d6a5;--shadow: 0 20px 60px rgba(15, 34, 71, .12);font-family:Segoe UI,SF Pro Display,PingFang SC,Helvetica Neue,sans-serif;color:var(--text)}*,*:before,*:after{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}#app{min-height:100vh}.page{max-width:1200px;margin:0 auto;padding:32px 20px 48px;display:flex;flex-direction:column;gap:24px}.hero{background:linear-gradient(120deg,#4d6bfe1f,#52d6a51a);border:1px solid var(--border);border-radius:20px;padding:24px;box-shadow:var(--shadow);display:flex;align-items:center;justify-content:space-between;gap:16px;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.hero h1{margin:4px 0 8px;font-size:28px;letter-spacing:-.02em}.github-btn{display:inline-flex;align-items:center;gap:10px;padding:12px 16px;border-radius:14px;border:1px solid var(--border);background:#ffffffe6;color:var(--text);text-decoration:none;font-weight:700;letter-spacing:.01em;box-shadow:var(--shadow);transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}.github-btn:hover{transform:translateY(-1px);border-color:#4d6bfe66;box-shadow:0 16px 40px #0f224729}.github-btn svg{width:20px;height:20px;fill:currentColor;opacity:.88}.eyebrow{margin:0;text-transform:uppercase;letter-spacing:.14em;font-weight:700;color:var(--accent)}.lede{margin:0;color:var(--muted)}.hint-chip{padding:8px 12px;border-radius:999px;border:1px dashed var(--border);color:var(--accent);background:#4d6bfe14;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);white-space:nowrap}.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.card{background:var(--panel);border:1px solid var(--border);border-radius:18px;padding:16px;box-shadow:var(--shadow);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);display:flex;flex-direction:column;gap:12px}.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.card h3{margin:4px 0 0}.label{margin:0;font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}.textarea{width:100%;min-height:180px;resize:vertical;border-radius:14px;border:1px solid var(--border);background:#fffc;padding:12px;font-size:14px;color:var(--text);outline:none;box-shadow:inset 0 1px #fff9}.textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px #4d6bfe1f}.actions{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.tips{color:var(--muted)}.primary-btn,.ghost-btn{border:1px solid var(--border);border-radius:12px;padding:10px 16px;cursor:pointer;font-weight:600;background:#ffffffe6;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}.primary-btn{background:linear-gradient(120deg,#4d6bfe,#52d6a5);color:#fff;border:none;box-shadow:0 12px 30px #4d6bfe40}.ghost-btn{color:var(--text);background:#ffffffe6}.primary-btn:hover,.ghost-btn:hover{transform:translateY(-1px)}.primary-btn:disabled,.ghost-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.hidden-input{display:none}.preview-card{min-height:360px}.zoom-controls{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}.zoom-buttons{display:flex;align-items:center;gap:6px}.zoom-btn{width:36px;padding:8px 0;text-align:center}.zoom-display{font-weight:700;color:var(--text);min-width:54px;text-align:center}.zoom-reset{padding-inline:12px}.preview-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.preview-column{display:flex;flex-direction:column;gap:8px}.column-head{color:var(--muted);font-weight:600}.preview-box{border:1px solid var(--border);border-radius:14px;background:#fff9;min-height:240px;padding:12px;display:flex;align-items:center;justify-content:center;overflow:hidden}.svg-holder{width:100%;height:100%;display:grid;place-items:center;transform-origin:center;transition:transform .2s ease}.svg-holder svg{max-width:100%;max-height:100%}.placeholder{color:var(--muted);font-style:italic}.chip{padding:6px 10px;border-radius:999px;background:#4d6bfe1f;color:var(--accent);border:1px dashed var(--border)}.chip.success{background:#52d6a51f;color:#1f9b72;border-color:#52d6a54d}.output-card .output{min-height:140px}.action-buttons{display:flex;gap:8px;flex-wrap:wrap}.error{margin:0;color:#c2344f;font-weight:600}.status{margin:0;color:var(--muted);font-size:13px}@media (max-width: 900px){.grid,.preview-grid{grid-template-columns:1fr}}@media (max-width: 640px){.hero,.actions{flex-direction:column;align-items:flex-start}}