:root{color-scheme:light;--bg: #f8f9fa;--panel: #ffffff;--panel-strong: #f1f5f9;--line: #e2e8f0;--text: #0f172a;--muted: #475569;--muted-2: #64748b;--accent: #3b82f6;--accent-ink: #ffffff;--primary: #3b82f6;--primary-hover: #2563eb;--primary-pressed: #1d4ed8;--primary-soft: #dbeafe;--primary-border: #93c5fd;--danger: #ef4444;--danger-rgb: 239 68 68;--shadow-rgb: 15 23 42;--shadow: 0 18px 48px rgb(15 23 42 / .1);--radius-sm: 6px;--radius-md: 8px;--radius: 8px;--surface-base: #ffffff;--surface-raised: #f8fafc;--surface-panel: #ffffff;--surface-input: #f8fafc;--input-focus-bg: #ffffff;--input-focus-text: #0f172a;--surface-deep: #f1f5f9;--surface-floor: #f1f5f9;--surface-dialog: #ffffff;--surface-control: #f8fafc;--surface-hover: #f1f5f9;--surface-subtle: #f8fafc;--surface-glint: rgba(255, 255, 255, .9);--border-subtle: #e2e8f0;--border-muted: #cbd5e1;--border-strong: #94a3b8;--accent-rgb: 59 130 246;--accent-soft: rgb(var(--accent-rgb) / .1);--accent-wash: rgb(var(--accent-rgb) / .06);--accent-panel: rgb(var(--accent-rgb) / .12);--accent-muted: rgb(var(--accent-rgb) / .14);--accent-border: rgb(var(--accent-rgb) / .3);--accent-border-strong: rgb(var(--accent-rgb) / .44);--scrollbar-track: rgba(15, 23, 42, .06);--scrollbar-thumb: rgb(var(--accent-rgb) / .24);--scrollbar-thumb-hover: rgb(var(--accent-rgb) / .42);--focus-ring: 0 0 0 3px rgb(var(--accent-rgb) / .22);--danger-soft: rgb(239 68 68 / .1);--danger-border: rgb(239 68 68 / .28);--success: #10b981;--success-rgb: 16 185 129;--success-soft: rgb(16 185 129 / .1);--success-border: rgb(16 185 129 / .28);--warning: #f59e0b;--warning-rgb: 245 158 11;--warning-soft: #fef3c7;--warning-border: #fcd34d;--info: #3b82f6;--info-rgb: 59 130 246;--info-soft: #dbeafe;--info-border: #93c5fd;--text-strong: #0f172a;--text-inverse: #ffffff;--text-inverse-muted: rgba(255, 255, 255, .72);--text-on-primary: #ffffff;--text-disabled: #94a3b8;--glass-bg: rgba(255, 255, 255, .88);--overlay-scrim: rgb(15 23 42 / .45);--overlay-media: rgb(15 23 42 / .65);--overlay-control: rgb(15 23 42 / .72);--chat-panel-bg: #ffffff;--chat-user-bg: #dbeafe;--chat-user-border: #93c5fd;--chat-assistant-bg: #f8fafc;--composer-bg: #ffffff;--composer-border: #e2e8f0;--gallery-tile-bg: #f8fafc;--gallery-hover: #f1f5f9;--code-bg: #f1f5f9;--code-border: #cbd5e1;--code-text: #0f172a;--code-comment: #64748b;--code-string: #059669;--code-number: #d97706;--code-keyword: #2563eb;--code-function: #7c3aed;--code-tag: #dc2626;--code-color: #3b82f6;--code-operator: #8b5cf6;--shadow-sm: 0 1px 2px rgb(var(--shadow-rgb) / .06);--shadow-md: 0 4px 12px rgb(var(--shadow-rgb) / .08);--shadow-lg: 0 10px 24px rgb(var(--shadow-rgb) / .1);--motion-fast: .16s ease;--motion-base: .18s ease;--touch-target: 44px}:root[data-theme=dark],body[data-theme=dark]{color-scheme:dark;--bg: #0f172a;--panel: #1e293b;--panel-strong: #334155;--line: #475569;--text: #f8fafc;--muted: #94a3b8;--muted-2: #64748b;--accent: #3b82f6;--accent-ink: #ffffff;--primary: #3b82f6;--primary-hover: #60a5fa;--primary-pressed: #2563eb;--primary-soft: #1e3a8a;--primary-border: #3b82f6;--danger: #f87171;--danger-rgb: 248 113 113;--shadow-rgb: 15 23 42;--surface-base: #1e293b;--surface-raised: #334155;--surface-panel: #1e293b;--surface-input: #334155;--input-focus-bg: #1e293b;--input-focus-text: #f8fafc;--surface-deep: #0f172a;--surface-floor: #1e293b;--surface-dialog: #1e293b;--surface-control: rgba(30, 41, 59, .85);--surface-hover: #475569;--surface-subtle: rgba(255, 255, 255, .04);--surface-glint: rgba(30, 41, 59, .9);--border-subtle: rgba(255, 255, 255, .08);--border-muted: rgba(255, 255, 255, .12);--border-strong: rgba(255, 255, 255, .18);--accent-rgb: 59 130 246;--accent-soft: rgb(var(--accent-rgb) / .14);--accent-wash: rgb(var(--accent-rgb) / .08);--accent-panel: rgb(var(--accent-rgb) / .18);--accent-muted: rgb(var(--accent-rgb) / .2);--accent-border: rgb(var(--accent-rgb) / .36);--accent-border-strong: rgb(var(--accent-rgb) / .52);--scrollbar-track: rgba(255, 255, 255, .04);--scrollbar-thumb: rgba(255, 255, 255, .22);--scrollbar-thumb-hover: rgba(255, 255, 255, .36);--focus-ring: 0 0 0 3px rgb(var(--accent-rgb) / .2);--danger-soft: rgb(248 113 113 / .14);--danger-border: rgb(248 113 113 / .32);--success: #34d399;--success-rgb: 52 211 153;--success-soft: rgb(52 211 153 / .14);--success-border: rgb(52 211 153 / .32);--warning: #fbbf24;--warning-rgb: 251 191 36;--warning-soft: #451a03;--warning-border: #d97706;--info: #3b82f6;--info-rgb: 59 130 246;--info-soft: #1e3a8a;--info-border: #3b82f6;--text-strong: #f8fafc;--text-inverse: #ffffff;--text-inverse-muted: rgba(255, 255, 255, .72);--text-on-primary: #ffffff;--text-disabled: #64748b;--glass-bg: rgba(30, 41, 59, .88);--overlay-scrim: rgb(15 23 42 / .55);--overlay-media: rgb(15 23 42 / .75);--overlay-control: rgb(15 23 42 / .78);--chat-panel-bg: #1e293b;--chat-user-bg: #1e3a8a;--chat-user-border: #3b82f6;--chat-assistant-bg: #334155;--composer-bg: #1e293b;--composer-border: #475569;--gallery-tile-bg: #334155;--gallery-hover: #475569;--code-bg: #1e293b;--code-border: rgba(255, 255, 255, .1);--code-text: #e2e8f0;--code-comment: #94a3b8;--code-string: #34d399;--code-number: #fbbf24;--code-keyword: #60a5fa;--code-function: #a78bfa;--code-tag: #f87171;--code-color: #7dd3fc;--code-operator: #c4b5fd;--shadow-sm: 0 1px 2px rgb(var(--shadow-rgb) / .2);--shadow-md: 0 8px 24px rgb(var(--shadow-rgb) / .24);--shadow-lg: 0 18px 48px rgb(var(--shadow-rgb) / .3);--shadow: 0 18px 48px rgb(var(--shadow-rgb) / .36)}:root{color:var(--text);background:var(--bg);font-family:Segoe UI,Microsoft YaHei,system-ui,-apple-system,BlinkMacSystemFont,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}html,body,#root{width:100%;height:100%;min-height:100%;margin:0;background:var(--bg)}*{scrollbar-color:var(--scrollbar-thumb) var(--scrollbar-track);scrollbar-width:auto}*::-webkit-scrollbar{width:20px;height:20px}*::-webkit-scrollbar-track{background:var(--scrollbar-track)}*::-webkit-scrollbar-thumb{border:2px solid var(--surface-deep);border-radius:var(--radius-md);background:var(--scrollbar-thumb)}*::-webkit-scrollbar-thumb:hover{background:var(--scrollbar-thumb-hover)}body{overflow:hidden;background:var(--bg)}button,input,textarea,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{border:0}.ui-action-button,.ui-icon-button,.ui-list-item-surface,.ui-media-tile,.ui-pagination-button{touch-action:manipulation}.ui-list-item-surface,.ui-media-tile{outline:0}.ui-list-item-surface:focus-visible,.ui-media-tile:focus-visible,.ui-action-button:focus-visible,.ui-icon-button:focus-visible,.ui-pagination-button:focus-visible{outline:0;box-shadow:var(--focus-ring)}a{color:inherit;text-decoration:none}.account-points-voucher-field a{border:1px solid var(--accent);text-decoration:none;height:42px;line-height:42px;border-radius:8px;padding:0 6px;background-color:var(--chat-user-bg);color:var(--accent)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.app-shell{display:grid;width:100%;height:100dvh;min-height:100dvh;overflow:hidden;background:var(--bg)}.top-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 22px;border-bottom:1px solid var(--border-subtle);background:var(--glass-bg);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.brand-mark{display:inline-flex;align-items:center;min-width:0;gap:12px}.topbar-menu.frontend-sidebar-toggle{display:inline-flex;width:42px;height:42px;flex:0 0 auto;align-items:center;justify-content:center;border-radius:var(--radius-md);background:var(--surface-control);color:var(--muted);cursor:pointer;transition:border-color var(--motion-base),background var(--motion-base),color var(--motion-base)}.topbar-menu.frontend-sidebar-toggle:hover,.topbar-menu.frontend-sidebar-toggle:focus-visible{border-color:var(--accent-border);background:var(--surface-hover);color:var(--text);outline:0}.brand-mark h1{min-width:0;margin:0;overflow:hidden;color:var(--text);font-size:clamp(18px,2vw,24px);font-weight:760;letter-spacing:0;line-height:1.1;text-overflow:ellipsis;white-space:nowrap}.logo-fallback,.logo-svg{display:inline-flex;width:36px;height:36px;flex:0 0 auto;align-items:center;justify-content:center;border:1px solid var(--primary-border);border-radius:var(--radius-md);background:linear-gradient(145deg,var(--accent),var(--primary-hover));color:var(--accent-ink);box-shadow:inset 0 -10px 22px rgb(var(--shadow-rgb) / .08)}.logo-image{display:block;width:36px;height:36px;flex:0 0 auto;background:var(--surface-dialog);object-fit:contain}.logo-svg svg{width:22px;height:22px}.topbar-actions{display:inline-flex;align-items:center;justify-content:flex-end;gap:10px;min-width:0}.topbar-custom-menu-link{display:inline-flex;align-items:center;justify-content:center;gap:7px;max-width:min(260px,32vw);min-height:38px;padding:0 13px;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--surface-control);color:var(--text);font-size:13px;font-weight:720;line-height:1;transition:border-color var(--motion-base),background var(--motion-base),color var(--motion-base),transform var(--motion-base)}.topbar-custom-menu-link span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.topbar-custom-menu-link:hover,.topbar-custom-menu-link:focus-visible{border-color:var(--accent-border);background:var(--surface-hover);color:var(--text);outline:0;transform:translateY(-1px)}.workspace-actions{position:absolute;top:18px;right:22px;z-index:24;display:inline-flex;align-items:center;justify-content:flex-end;gap:8px;min-width:0}.workspace-action-link{display:inline-flex;align-items:center;justify-content:center;gap:7px;max-width:min(260px,46vw);min-height:var(--touch-target);padding:0 13px;overflow:hidden;border:1px solid var(--line);border-radius:8px;background:var(--surface-base);color:var(--text);font-size:13px;font-weight:720;line-height:1;transition:border-color var(--motion-base),background var(--motion-base),color var(--motion-base)}.workspace-action-link span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.workspace-action-link:hover,.workspace-action-link:focus-visible{border-color:var(--accent-border);background:var(--surface-hover);color:var(--accent);outline:0}.mobile-sidebar-toggle{position:fixed;top:12px;left:12px;z-index:88;display:none;width:44px;height:44px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:8px;background:var(--surface-base);box-shadow:var(--shadow-md);color:var(--text);cursor:pointer}.mobile-sidebar-toggle:hover,.mobile-sidebar-toggle:focus-visible{border-color:var(--accent-border);background:var(--surface-hover);color:var(--accent);outline:0}.mobile-sidebar-toggle.is-hidden{display:none}.user-avatar-button{position:relative;display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid var(--line);border-radius:50%;outline:0;background:var(--surface-control);color:var(--text);cursor:pointer;flex:0 0 auto;transition:border-color .18s ease,box-shadow .18s ease,color .18s ease,background .18s ease,transform .18s ease}.user-avatar-button:hover,.user-avatar-button:focus-visible{border-color:var(--accent-border);background:var(--surface-hover);color:var(--text);box-shadow:var(--focus-ring)}.user-avatar-button:hover{transform:translateY(-1px)}.avatar-status{position:absolute;right:3px;bottom:3px;width:10px;height:10px;border:2px solid var(--surface-dialog);border-radius:50%;background:var(--muted-2)}.avatar-status.is-online{background:var(--success)}.topbar-theme-toggle{display:inline-flex;width:42px;height:42px;flex:0 0 auto;align-items:center;justify-content:center;border-radius:var(--radius-md);background:var(--surface-control);color:var(--muted);cursor:pointer;transition:border-color var(--motion-base),background var(--motion-base),color var(--motion-base),transform var(--motion-base)}.topbar-theme-toggle:hover,.topbar-theme-toggle:focus-visible{border-color:var(--accent-border);background:var(--surface-hover);color:var(--accent);outline:0;transform:translateY(-1px)}.auth-overlay{position:fixed;inset:0;z-index:1000;display:grid;place-items:center;width:100vw;min-height:100dvh;padding:20px;overflow:auto;overscroll-behavior:contain;background:rgb(var(--shadow-rgb) / .64);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.auth-dialog{position:relative;width:min(100%,430px);max-height:calc(100dvh - 40px);overflow:auto;border:1px solid rgb(var(--accent-rgb) / .18);border-radius:8px;background:linear-gradient(180deg,var(--accent-soft),rgb(var(--accent-rgb) / 0)),var(--surface-dialog);color:var(--text);box-shadow:var(--shadow);padding:22px}.auth-close{position:absolute;top:14px;right:14px;display:inline-flex;width:36px;height:36px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:8px;background:var(--surface-base);color:var(--muted);cursor:pointer;transition:border-color .18s ease,color .18s ease,background .18s ease}.auth-close:hover,.auth-close:focus-visible{border-color:rgb(var(--accent-rgb) / .55);background:var(--surface-hover);color:var(--text);outline:0}.auth-heading{display:grid;grid-template-columns:42px minmax(0,1fr);align-items:center;gap:12px;padding-right:42px}.auth-mark{display:inline-flex;width:42px;height:42px;align-items:center;justify-content:center;border:1px solid rgb(var(--accent-rgb) / .38);border-radius:8px;background:var(--accent);color:var(--accent-ink)}.auth-heading h2{margin:0;font-size:22px;letter-spacing:0;line-height:1.2}.auth-heading p{margin:5px 0 0;color:var(--muted);font-size:13px;line-height:1.5}.auth-tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;margin:20px 0;padding:4px;border:1px solid var(--line);border-radius:8px;background:var(--surface-control)}.auth-tabs button,.auth-tabs a{display:inline-flex;min-height:38px;align-items:center;justify-content:center;border-radius:6px;background:transparent;color:var(--muted);cursor:pointer;font-size:13px;font-weight:720;transition:background .18s ease,color .18s ease}.auth-tabs button:hover,.auth-tabs button:focus-visible,.auth-tabs button.is-active,.auth-tabs a:hover,.auth-tabs a:focus-visible,.auth-tabs a.is-active{background:var(--surface-hover);color:var(--text);outline:0}.auth-form{display:grid;gap:14px}.auth-form label{display:grid;gap:7px;color:var(--muted);font-size:12px;font-weight:700}.auth-form input{width:100%;min-height:44px;border:1px solid var(--line);border-radius:8px;outline:0;background:var(--surface-input);color:var(--text);padding:0 12px;transition:border-color .18s ease,background .18s ease,box-shadow .18s ease}.auth-form input:focus{border-color:var(--accent-border-strong);background:var(--input-focus-bg);color:var(--input-focus-text);box-shadow:0 0 0 3px var(--accent-wash)}.auth-form input:disabled{cursor:not-allowed;opacity:.46}.auth-submit{display:inline-flex;min-height:44px;align-items:center;justify-content:center;gap:8px;border-radius:8px;background:var(--accent);color:var(--accent-ink);cursor:pointer;font-size:14px;font-weight:780;text-decoration:none;transition:filter .18s ease,opacity .18s ease,transform .18s ease}.auth-secondary{background:transparent;color:var(--text);border:1px solid var(--line)}.credit-badge{border:1px solid rgb(var(--accent-rgb) / .2);background:var(--accent-soft);color:var(--text);border-radius:8px;padding:10px 12px;font-size:13px}.credit-badge{display:flex;align-items:center;justify-content:space-between;gap:12px}.credit-badge strong{color:var(--accent)}.auth-submit:hover:not(:disabled),.auth-submit:focus-visible:not(:disabled){filter:brightness(1.06);outline:0;transform:translateY(-1px)}.auth-submit:disabled{cursor:not-allowed;opacity:.46}.auth-error{border:1px solid rgb(var(--danger-rgb) / .28);border-radius:8px;background:var(--danger-soft);color:var(--danger);padding:10px 12px;font-size:13px;line-height:1.5}.redeem-dialog{width:min(100%,460px)}.redeem-form{margin-top:20px}.redeem-credit-badge{background:linear-gradient(135deg,var(--accent-panel),rgb(var(--accent-rgb) / .04)),var(--surface-control)}.auth-success{border:1px solid var(--success-border);border-radius:8px;background:var(--success-soft);color:var(--success);padding:10px 12px;font-size:13px;line-height:1.5}.redeem-note{margin:0;color:var(--muted);font-size:12px;line-height:1.6}.announcement-dialog{width:min(100%,560px)}.announcement-dialog-content{margin-top:20px}.announcement-dialog-list{display:grid;max-height:min(420px,calc(100dvh - 330px));gap:10px;overflow:auto;padding-right:2px}.announcement-dialog-item{display:grid;gap:10px;border:1px solid var(--border-subtle);border-radius:8px;background:var(--surface-control);padding:12px}.announcement-dialog-item-head{display:grid;min-width:0;grid-template-columns:36px minmax(0,1fr) auto;align-items:start;gap:10px}.announcement-dialog-item-head>div{display:grid;min-width:0;gap:4px}.announcement-dialog-item-head strong{overflow:hidden;color:var(--text-strong);font-size:15px;font-weight:820;line-height:1.25;text-overflow:ellipsis;white-space:nowrap}.announcement-dialog-item-head span:not(.account-notification-icon):not(.account-notification-type-pill){color:var(--muted);font-size:12px;line-height:1.4}.announcement-dialog-item p{margin:0;color:var(--text);font-size:13px;line-height:1.65;white-space:pre-wrap}.announcement-dialog-item time{color:var(--muted);font-size:12px;font-variant-numeric:tabular-nums}.announcement-dialog-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px}.account-center-dialog{width:min(1180px,calc(100vw - 40px));max-height:min(820px,calc(100dvh - 40px));overflow:hidden;border-color:rgb(var(--accent-rgb) / .28);background:var(--surface-dialog);padding:0;box-shadow:var(--shadow-lg)}.account-center-close{top:18px;right:18px;z-index:5;background:var(--surface-control)}.account-center{display:grid;min-height:min(720px,calc(100dvh - 84px));max-height:inherit;grid-template-columns:250px minmax(0,1fr);gap:22px;overflow:hidden;padding:22px}.account-center-sidebar{display:flex;min-width:0;min-height:0;flex-direction:column;gap:18px}.account-center-title{display:grid;grid-template-columns:52px minmax(0,1fr);align-items:center;gap:12px;padding:8px 0}.account-center-title-icon{display:inline-flex;width:52px;height:52px;align-items:center;justify-content:center;border-radius:8px;background:var(--accent);color:var(--accent-ink);box-shadow:inset 0 -12px 24px rgb(var(--shadow-rgb) / .18)}.account-center-title h2{margin:0;color:var(--text-strong);font-size:22px;font-weight:820;letter-spacing:0;line-height:1.15}.account-center-title p{margin:6px 0 0;color:var(--muted);font-size:13px;line-height:1.45}.account-center-nav{display:grid;align-content:start;gap:8px;min-height:0;flex:1 1 auto;overflow:auto;padding:2px 0}.account-center-nav-item{display:grid;width:100%;min-height:52px;grid-template-columns:24px minmax(0,1fr) 18px;align-items:center;gap:12px;border:1px solid transparent;border-radius:8px;background:transparent;color:var(--text);cursor:pointer;padding:0 14px;text-align:left;transition:border-color var(--motion-base),background var(--motion-base),color var(--motion-base)}.account-center-nav-item svg{color:currentColor;stroke-width:2.2}.account-center-nav-item span{overflow:hidden;font-size:15px;font-weight:760;line-height:1.3;text-overflow:ellipsis;white-space:nowrap}.account-center-nav-item.is-active{border-color:rgb(var(--accent-rgb) / .18);background:linear-gradient(90deg,rgb(var(--accent-rgb) / .16),rgb(var(--accent-rgb) / .05)),rgb(var(--accent-rgb) / .04);color:var(--accent)}.account-center-nav-item:focus-visible,.account-center-logout:focus-visible{outline:0;box-shadow:var(--focus-ring)}.account-center-logout{display:inline-flex;min-height:52px;align-items:center;justify-content:center;gap:10px;border:1px solid var(--line);border-radius:8px;background:var(--surface-control);color:var(--text);cursor:pointer;font-size:14px;font-weight:760;transition:border-color var(--motion-base),background var(--motion-base),color var(--motion-base),transform var(--motion-base)}.account-center-logout:hover:not(:disabled){border-color:var(--accent-border);background:var(--surface-hover);color:var(--accent);transform:translateY(-1px)}.account-center-logout:disabled{cursor:not-allowed;opacity:.5}.account-center-content{display:grid;min-width:0;min-height:0;align-content:start;gap:16px;overflow:auto;overscroll-behavior:contain;padding:48px 2px 18px 0}.account-center-error{margin-right:54px}.account-profile-panel{display:grid;min-width:0;grid-template-columns:minmax(0,1fr) minmax(240px,300px);align-items:center;gap:20px;border:1px solid var(--border-muted);border-radius:8px;background:linear-gradient(135deg,#ffffff09,#ffffff03),var(--surface-panel);padding:24px}.account-profile-identity{display:flex;min-width:0;align-items:center;gap:20px}.account-profile-avatar{display:inline-flex;width:78px;height:78px;flex:0 0 auto;align-items:center;justify-content:center;border-radius:50%;background:var(--accent);color:var(--accent-ink);box-shadow:inset 0 -16px 28px rgb(var(--shadow-rgb) / .14)}.account-profile-copy{min-width:0}.account-profile-name-row{display:flex;min-width:0;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px}.account-profile-name-row strong{color:var(--text-strong);font-size:20px;font-weight:820;line-height:1.2}.account-profile-role{display:inline-flex;min-height:24px;align-items:center;gap:4px;border:1px solid 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