:root{--paper:#f6f8fb;--card:#fff;--surface-base:#fff;--line:#dbe3ee;--ink:#111827;--muted:#667085;--accent:#285082;--accent-2:#0f766e;--surface-subtle:#f8fbff;--surface-muted:#fbfcfe;--line-strong:#bfd1ea;--line-active:#9ebcf0;--surface-active:#e9f2ff;--text-secondary:#475467;--text-tertiary:#334155;--focus-ring:#285082;--elevation-soft:0 8px 18px #0f172a12;--surface-success-soft:#effbf6;--line-success-soft:#b7ead6;--surface-positive-soft:#f3fcf8;--line-positive-soft:#b8e9d4;--surface-warning-soft:#fff9ef;--line-warning-soft:#f0d39b;--alert-warning-bg:#fffaf0;--alert-warning-border:#f0cc7e;--alert-warning-accent:#d18a00;--alert-warning-text:#7a4a00;--alert-warning-marker-text:#fff;--surface-pill-muted:#e7edf8;--surface-pill-active:#d5e3fb;--text-pill-muted:#334155;--text-pill-active:#1e3a8a;--surface-row-hover:#fbfdff;--surface-row-disabled:#fbfcfe;--surface-nav-hover:#f8fafc;--surface-nav-active:#eef4ff;--surface-nav-active-hover:#e3edff;--surface-input:#fff;--surface-panel:#fbfdff;--surface-preview:#f7fbff;--surface-disabled:#f5f7fa;--surface-success-strong:#e8fbf5;--surface-warning-strong:#fff7e7;--surface-danger-strong:#feeeee;--surface-overlay:#fffc;--line-nav-hover:#dfe8f3;--line-nav-active:#c5d8ff;--line-nav-active-hover:#a8c4ff;--line-card:#e6ebf2;--line-chip:#d9e3ef;--line-dashed:#cdd8e6;--line-disabled:#d0d5dd;--line-success-strong:#9de7c9;--line-warning-strong:#f2d28d;--line-danger-strong:#f6b3b3;--text-nav-muted:#94a3b8;--text-nav:#1e293b;--text-chip:#5b6b80;--text-danger-soft:#9a3412;--text-danger:#b42318;--text-success:#027a48;--text-preview:#344054;--text-disabled:#98a2b3;--text-success-strong:#045c39;--text-warning-strong:#8a5a04;--text-danger-strong:#8e1d1d;--shadow-card:0 1px 4px #0f172a08;--shadow-button-hover:0 6px 14px #10182814;--auth-shimmer:linear-gradient(90deg, #e5edf6 0%, #f8fbff 50%, #e5edf6 100%)}*{box-sizing:border-box}body{color:#595757;background:var(--paper);margin:0;font-family:Yu Gothic,YuGothic,Hiragino Kaku Gothic ProN,Meiryo,system-ui,sans-serif}h1,h2,h3,h4,h5,h6{color:var(--ink);font-family:inherit}button,input,textarea,select{font:inherit}a{color:inherit;text-decoration:none}.shell{flex-direction:column;width:100%;min-height:100vh;display:flex}.shell-topbar{height:48px;color:var(--ink);border-bottom:1px solid var(--line);background:#fff;flex-shrink:0;justify-content:space-between;align-items:center;gap:16px;padding:0 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