:root{color-scheme:dark;--bg:#07101f;--panel:#0d192b;--panel2:#101f34;--line:#21334d;--text:#f4f7fb;--muted:#8fa2bd;--blue:#4f8cff;--cyan:#32d3c9;--green:#36d399;--red:#fb7185;--amber:#fbbf24;--shadow:0 24px 80px rgba(0,0,0,.35)}*{box-sizing:border-box}html{font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;background:var(--bg);color:var(--text)}body{margin:0;min-height:100vh;background:radial-gradient(circle at 15% -10%,rgba(79,140,255,.18),transparent 34%),radial-gradient(circle at 90% 0,rgba(50,211,201,.09),transparent 25%),var(--bg)}button,input{font:inherit}.topbar{height:76px;border-bottom:1px solid rgba(143,162,189,.14);background:rgba(7,16,31,.82);backdrop-filter:blur(16px);display:flex;align-items:center;justify-content:space-between;padding:0 max(28px,calc((100vw - 1280px)/2));position:sticky;top:0;z-index:20}.brand,.top-actions,.hero-actions,.actions,.flow-note{display:flex;align-items:center}.brand{gap:12px}.brand 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