:root{--bg:#f5f7fb;--surface:#ffffff;--surface-2:#f8fafc;--text:#0f172a;--muted:#64748b;--border:#e2e8f0;--accent:#0f172a;--accent-2:#1d4ed8;--danger-bg:#fff1f2;--danger-border:#fecdd3;--danger-text:#be123c;--warn-bg:#fffbeb;--warn-border:#fde68a;--warn-text:#92400e;--success-bg:#ecfdf5;--success-border:#a7f3d0;--success-text:#065f46}*{box-sizing:border-box}body,html{padding:0;margin:0;font-family:Inter,Arial,sans-serif;color:var(--text);background:var(--bg)}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}.page-shell{min-height:100vh}.container{max-width:1180px;margin:0 auto;padding:0 24px}.header{position:-webkit-sticky;position:sticky;top:0;z-index:20;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:rgba(255,255,255,.86);border-bottom:1px solid var(--border)}.header-row{justify-content:space-between;gap:20px;padding:18px 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