:root{--bg:#fff;--bg-2:#f9f9ff;--bg-3:#eef2ff;--bg-4:#dce2f3;--border:#e5e7eb;--border-strong:#c7c4d8;--border-subtle:#f3f4f6;--text:#151c27;--text-2:#4b5563;--text-3:#9ca3af;--text-4:#d1d5db;--accent:#3525cd;--accent-hover:#2f1eb3;--accent-pressed:#2518a0;--accent-tint:#e2dfff;--accent-tint-2:#c3c0ff;--accent-border:#c3c0ff;--on-accent:#fff;--success:#10b981;--success-tint:#ecfdf5;--warning:#f59e0b;--warning-tint:#fffbeb;--danger:#f43f5e;--danger-tint:#fee2e7;--info:#4f46e5;--info-tint:#eef2ff;--r-xs:4px;--r-sm:6px;--r-md:8px;--r-lg:12px;--r-xl:16px;--r-2xl:20px;--r-pill:999px;--sh-1:0 1px 0 #0f172a0a, 0 1px 2px #0f172a0a;--sh-2:0 1px 2px #0f172a0f, 0 4px 12px #0f172a0f;--sh-3:0 8px 24px #0f172a1a, 0 2px 6px #0f172a0f;--sh-pop:0 12px 40px #0f172a29;--ring:0 0 0 3px #2557e52e;--font-sans:"Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono:"JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, 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.12s}.dropzone:hover{background:var(--bg-2);border-color:var(--accent-tint-2)}.dropzone.active{background:var(--accent-tint);border-color:var(--accent)}.avatar{background:var(--bg-3);color:var(--text-2);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-weight:500;display:inline-flex}.avatar-blue{background:var(--accent-tint);color:var(--accent)}.notif-panel{background:var(--bg);border:1px solid var(--border);border-radius:var(--r-lg);width:340px;max-height:400px;box-shadow:var(--sh-3);z-index:40;animation:.15s both scale-in;position:absolute;top:calc(100% + 8px);right:0;overflow:hidden}.notif-item{border-bottom:1px solid var(--border-subtle);cursor:pointer;padding:12px 14px;transition:background 80ms}.notif-item:hover{background:var(--bg-2)}.notif-item:last-child{border-bottom:none}.user-menu{background:var(--bg);border:1px solid var(--border);border-radius:var(--r-lg);width:240px;box-shadow:var(--sh-3);z-index:45;animation:.14s both 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0;border:0;align-items:center;gap:10px;padding:0 10px;font-size:13px;display:flex}.settings-nav-item:hover{background:var(--bg-2);color:var(--text)}.settings-nav-item.active{background:var(--accent-tint);color:var(--accent);font-weight:600}.settings-nav-item.danger{color:var(--danger)}.settings-nav-item i{font-size:16px}.settings-content-panel{background:var(--bg);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--sh-1);min-height:520px;padding:22px}.settings-section-head{border-bottom:1px solid var(--border-subtle);justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:20px;padding-bottom:16px;display:flex}.settings-section-title{color:var(--text);font-size:16px;font-weight:700}.settings-section-sub{color:var(--text-3);margin-top:4px;font-size:12.5px;line-height:1.45}.settings-field-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.settings-soft-card{background:var(--bg-2);border:1px solid 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