:root{--c-bg:#f4f6f8;--c-fg:#17202a;--c-muted:#5d6874;--c-panel:#ffffffeb;--c-line:#dde2e7;--c-accent:#1f6feb;--c-accent-fg:#fff;--radius:12px;--font:system-ui, -apple-system, "Segoe UI", "Noto Sans Thai", "Leelawadee UI", Tahoma, sans-serif}:root[data-theme=dark]{--c-bg:#12161b;--c-fg:#e6ebf0;--c-muted:#9aa5b1;--c-panel:#181d23eb;--c-line:#2d353e;--c-accent:#4c8dff}*{box-sizing:border-box}html,body{height:100%;margin:0}body{background:var(--c-bg);color:var(--c-fg);font:16px/1.6 var(--font);-webkit-font-smoothing:antialiased}a{color:inherit}.core-btn{border:1px solid var(--c-line);background:var(--c-panel);min-height:40px;color:var(--c-fg);font:inherit;cursor:pointer;white-space:nowrap;border-radius:999px;align-items:center;gap:4px;padding:0 14px;font-size:14px;text-decoration:none;display:inline-flex}.core-btn:hover:not(:disabled){border-color:var(--c-accent)}.core-btn:disabled{opacity:.4;cursor:default}.core-btn:focus-visible,.core-dots 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