:root{--bg:#0f0f14;--bg-card:#1a1a24;--border:#2a2a3e;--text:#e6edf3;--text-secondary:#8b949e;--text-muted:#555;--accent:#f0883e;--glass:rgba(15,15,20,0.92)}
    body.light{--bg:#f5f5f7;--bg-card:#fff;--border:#d2d2d7;--text:#1d1d1f;--text-secondary:#6e6e73;--text-muted:#aeaeb2;--accent:#f0883e;--glass:rgba(245,245,247,0.92)}
    *{margin:0;padding:0;box-sizing:border-box}
    body{font-family:-apple-system,"Microsoft YaHei","Helvetica Neue",sans-serif;background:var(--bg);color:var(--text);min-height:100vh}
    .header{border-bottom:1px solid var(--border);padding:16px 24px;position:sticky;top:0;z-index:100;background:var(--glass);backdrop-filter:blur(12px)}
    .header-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between}
    .logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;text-decoration:none;color:var(--text)}
    .logo-icon{width:32px;height:32px;background:linear-gradient(135deg,#f0883e,#f9a05a);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:18px;color:#fff;font-weight:800}
    .logo span{background:linear-gradient(135deg,#f0883e,#f9a05a);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
    .nav-right{display:flex;align-items:center;gap:16px}
    .nav-links{display:flex;gap:20px;align-items:center}
    .nav-links a{color:var(--text-secondary);text-decoration:none;font-size:14px;font-weight:500}
    .nav-links a:hover,.nav-links a.active{color:var(--accent)}
    .tg{width:36px;height:36px;border-radius:8px;border:1px solid var(--border);background:var(--bg-card);color:var(--text-secondary);font-size:18px;cursor:pointer}
    .hero{max-width:1200px;margin:0 auto;padding:40px 24px 4px;text-align:center}
    .hero h1{font-size:32px;font-weight:800;margin-bottom:8px}
    .hero h1 span{background:linear-gradient(135deg,#f0883e,#f9a05a,#ffb347);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
    .hero p{color:var(--text-secondary);font-size:14px}
    .studio{max-width:1200px;margin:0 auto;padding:20px 24px 48px;display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:20px;align-items:start}
    .preview-card{background:var(--bg-card);border:1px solid var(--border);border-radius:14px;padding:20px;display:grid;place-items:center}
    #cardCanvas{width:100%;max-width:480px;height:auto;border-radius:10px;box-shadow:0 12px 40px rgba(0,0,0,.35)}
    .panel{background:var(--bg-card);border:1px solid var(--border);border-radius:14px;padding:18px;display:grid;gap:14px}
    .panel h2{font-size:13px;color:var(--text-muted);font-weight:700;margin-bottom:8px}
    .panel textarea,.panel input{min-height:44px;border:1px solid var(--border);border-radius:10px;background:var(--bg);color:var(--text);padding:10px 12px;font-size:14px;font-family:inherit;width:100%}
    .panel textarea{min-height:150px;resize:vertical;line-height:1.7}
    .panel textarea:focus,.panel input:focus{outline:none;border-color:var(--accent)}
    .countline{font-size:12px;color:var(--text-muted);text-align:right}
    .themes{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
    .theme{border-radius:10px;border:2px solid transparent;cursor:pointer;padding:0;overflow:hidden;height:56px;font-family:inherit}
    .theme.on{border-color:var(--accent)}
    .theme small{display:block;font-size:11px;padding:2px 0}
    .ops{display:flex;gap:8px}
    .abtn{flex:1;padding:12px;border-radius:10px;border:1px solid var(--accent);background:transparent;color:var(--accent);font-size:14px;font-weight:700;cursor:pointer;font-family:inherit}
    .abtn.solid{background:var(--accent);color:#fff}
    .note{font-size:12px;color:var(--text-muted);text-align:center}
    .footer{border-top:1px solid var(--border);padding:24px;text-align:center;color:var(--text-muted);font-size:13px}
    .footer a{color:var(--accent);text-decoration:none}
    @media(max-width:900px){.studio{grid-template-columns:1fr}.hero h1{font-size:26px}}