:root{--color-bg: #f1f5f9;--color-bg-card: #fff;--color-bg-header: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);--color-bg-notebook: #fefefe;--color-border: #cbd5e1;--color-text: #0f172a;--color-text-secondary: #475569;--color-primary: #1d4ed8;--color-primary-dark: #1e3a8a;--color-accent: #047857;--color-success: #047857;--color-warning: #d97706;--color-error: #dc2626;--color-gradient-primary: linear-gradient(135deg, #1d4ed8 0%, #047857 100%);--color-gradient-accent: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 100%);--color-trust-blue: #1d4ed8;--color-trust-navy: #1e3a8a;--color-trust-green: #047857;--color-trust-gray: #374151;--color-accent-warm: #ea580c;--color-accent-cool: #0891b2;--color-notebook-blue: #3b82f6;--color-notebook-red: #ef4444;--color-notebook-green: #10b981;--color-notebook-gray: #6b7280;--color-notebook-line: #e5e7eb;--radius: 1.5rem;--radius-sm: .7rem;--radius-lg: 2.5rem;--shadow: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--shadow-card: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-header: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .05);--shadow-button: 0 4px 6px -1px rgba(29, 78, 216, .2), 0 2px 4px -1px rgba(29, 78, 216, .1);--header-height: 72px;--font-main: "Inter", "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-weight-bold: 700;--font-weight-semibold: 600;--font-weight-medium: 500;--transition: .3s cubic-bezier(.4, 0, .2, 1)}[data-theme=dark]{--color-bg: #181c23;--color-bg-card: #232a36;--color-bg-header: linear-gradient(90deg, #2e3a4d 0%, #1e2a38 100%);--color-border: #2e3a4d;--color-text: #f3f6fa;--color-text-secondary: #b0b8c9;--color-primary: #4ecdc4;--color-primary-dark: #38b2ac;--color-accent: #7fd7e6;--color-error: #ff7675;--color-success: #00b894;--color-warning: 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#ffffff;--color-bg-header: linear-gradient(90deg, #7fd7e6 0%, #6ad1c8 100%);--color-bg-muted: #e2e8f0;--color-text: #222b45;--color-text-secondary: #6b7a90;--color-text-muted: #718096;--color-text-invert: #ffffff;--color-border: #e2e8f0;--radius: 1.5rem;--radius-sm: .7rem;--radius-lg: 2.5rem;--shadow: 0 4px 24px 0 rgba(60, 60, 60, .08);--shadow-card: 0 2px 12px 0 rgba(60, 60, 60, .1);--header-height: 64px;--font-main: "Inter", "Roboto", Arial, sans-serif;--transition: .2s cubic-bezier(.4, 0, .2, 1);--md-primary: var(--color-primary);--md-on-primary: var(--color-text-invert);--md-surface: var(--color-bg-card);--md-on-surface: var(--color-text);--md-outline: var(--color-border);--md-elevation-1: var(--shadow);--md-elevation-2: var(--shadow-card);--md-state-hover: rgba(79, 209, 197, .08);--md-state-focus: rgba(79, 209, 197, .12);--md-radius: var(--radius);--md-radius-lg: var(--radius-lg)}[data-theme=dark]{--color-primary: #38b2ac;--color-primary-hover: #319795;--color-secondary: 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1.2rem;text-align:left;white-space:nowrap}th{background:var(--color-bg-muted);color:var(--color-text);font-weight:600;-webkit-user-select:none;user-select:none}.error{color:var(--color-error);background:#f565651a;padding:.9rem 1.1rem;border-radius:var(--radius);font-size:1rem;margin-top:.5rem}h1,h2,h3,h4,h5,h6{color:var(--color-text);font-weight:600;letter-spacing:.01em}::-webkit-scrollbar{width:8px;background:var(--color-bg-card)}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--color-text-muted)}*{-webkit-tap-highlight-color:transparent;tap-highlight-color:transparent}*:focus,*:active{outline:none!important;-webkit-tap-highlight-color:transparent}button,input,textarea,a,[role=button],[tabindex]{-webkit-tap-highlight-color:transparent}#app{font-weight:400}a{text-decoration:none;color:var(--md-primary);border-radius:var(--md-radius-sm);padding:.25em .5em;transition:background .2s,color 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#43b883);font-size:1.08rem;padding:.25em .5em;transition:background .2s,color .2s;position:relative;overflow:hidden}.auth-link-text a{color:var(--md-primary, #43b883);text-decoration:none;font-weight:600;border-radius:inherit;transition:color .2s,background .2s;padding:.1em .4em;position:relative;overflow:hidden}.auth-link-text a:hover{color:var(--md-primary-hover, #319795);text-decoration:underline;background:var(--md-state-hover, hsla(160, 100%, 37%, .2))}.auth-policy{margin-top:2.2rem;color:#b0b0b0;font-size:.95rem;text-align:center}.auth-hint{color:#6b7280;font-size:.98rem;margin-bottom:.2rem;margin-top:-.7rem;padding-left:.2rem}.auth-teacher-link{margin-top:2.2rem;text-align:center}.auth-teacher-link a{color:#4fd1c5;font-size:1.08rem;text-decoration:none;transition:color .2s}.auth-teacher-link a:hover{color:#319795;border-radius:12px;text-decoration:underline}.error{color:#e74c3c;text-align:center;margin-top:.5rem}.success{color:#27ae60;text-align:center;margin-top:.5rem}@media (max-width: 900px){.auth-page{flex-direction:column}.auth-left,.auth-right{flex:unset;width:100%;min-height:320px;padding:2rem .5rem}.auth-icon-bg{width:120px;height:120px;margin-bottom:1.2rem}.auth-title{font-size:1.4rem}}.profile-menu-wrapper[data-v-bc946877]{position:relative;display:flex;align-items:center}.profile-btn[data-v-bc946877]{display:flex;align-items:center;gap:.5rem;background:#ffffff2e;color:#fff;border:none;border-radius:20px;padding:.4rem 1.1rem .4rem .7rem;font-weight:600;font-size:1.05rem;cursor:pointer;transition:background 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.profile-initial[data-v-bc946877]{background:#ffffff2e;color:#38b2ac}[data-theme=dark] .profile-menu[data-v-bc946877]{background:#232b3b;color:#e6f7fa}[data-theme=dark] .profile-menu-item[data-v-bc946877]:hover{background:#2d3748}.sidebar-trigger[data-v-3452418f]{margin:5px 0 5px 5px;padding:.7rem;background:#1c998f7a;color:#2d3748;border:none;border-radius:50%;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;z-index:101;border:2px solid rgba(255,255,255,.3);width:45px;min-width:40px;min-height:40px;height:45px;box-sizing:border-box;overflow:hidden}.sidebar-trigger[data-v-3452418f]:hover{background:#6dd6cd88;transform:scale(1.05)}.sidebar-trigger[data-v-3452418f]:active{transform:translateY(2px) scale(.95)}.scale-fade-mirror-enter-active[data-v-3452418f]{transition:all var(--5b14d3b6) cubic-bezier(.34,1.56,.64,1)}.scale-fade-mirror-leave-active[data-v-3452418f]{transition:all var(--5b14d3b6) cubic-bezier(.34,1.56,.64,1) 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rotate(-180deg);opacity:0;width:0px;height:0px;margin:0;padding:0;min-width:0px;min-height:0px;border-width:0px}}.scale-fade-mirror-enter-active[data-v-3452418f]{animation:scale-fade-in-3452418f var(--5b14d3b6) cubic-bezier(.34,1.56,.64,1) forwards}.scale-fade-mirror-leave-active[data-v-3452418f]{animation:scale-fade-out-3452418f var(--5b14d3b6) cubic-bezier(.34,1.56,.64,1) forwards}@keyframes gentle-pulse-3452418f{0%,to{transform:scale(1);box-shadow:0 0 #4fd1c566}50%{transform:scale(1.05);box-shadow:0 0 0 8px #4fd1c51a}}.sidebar-trigger[data-v-3452418f]:hover{animation:gentle-pulse-3452418f 2s ease-in-out infinite}[data-theme=dark] .sidebar-trigger[data-v-3452418f]{background:linear-gradient(135deg,#233a4d,#319795);color:#e6f7fa;box-shadow:0 4px 15px #31979540;border:2px solid rgba(255,255,255,.1)}[data-theme=dark] .sidebar-trigger[data-v-3452418f]:hover{background:linear-gradient(135deg,#1e2f3f,#2a807e);box-shadow:0 6px 20px #31979559}header[data-v-81b5147d]{background:var(--color-bg-header);box-shadow:var(--shadow-header);position:fixed;width:100%;top:0;z-index:100;height:var(--header-height);display:flex;align-items:center;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(0,0,0,.1)}.nav-container[data-v-81b5147d]{display:flex;justify-content:space-between;align-items:center;padding:0 2rem;margin:0 auto;width:100%;height:100%;max-width:1200px;position:relative;flex-wrap:nowrap}.logobox[data-v-81b5147d]{margin-right:1.2rem}.logo[data-v-81b5147d]{font-family:SF Pro Display,Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:1.75rem;font-weight:800;color:var(--color-text);letter-spacing:-.03em;text-shadow:0 2px 4px rgba(0,0,0,.1);position:relative;background:linear-gradient(135deg,#1e3a8a,#3b82f6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;flex-shrink:0;white-space:nowrap;display:inline-block;min-width:fit-content;padding:.4rem .75rem;transition:all .3s ease;overflow:hidden;letter-spacing:.01em;border:1px solid transparent;height:3rem;display:flex;align-items:center;justify-content:center;text-align:center;vertical-align:middle;line-height:normal}.logo[data-v-81b5147d]:hover{transform:translateY(-1px);color:#1e3a8a}.nav-center[data-v-81b5147d]{flex:1;display:flex;justify-content:center}.nav-tabs[data-v-81b5147d]{display:flex;gap:.5rem;align-items:center}.nav-tab[data-v-81b5147d]{padding:.4rem .75rem;text-decoration:none;color:var(--color-text);font-weight:var(--font-weight-medium);font-size:1rem;position:relative;border-radius:8px;background:transparent;transition:all .3s ease;overflow:hidden;letter-spacing:.01em;border:1px solid transparent;height:3rem;display:flex;align-items:center;justify-content:center;text-align:center;vertical-align:middle;line-height:normal}.nav-tab[data-v-81b5147d]:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:#3b82f626;opacity:0;transition:opacity .3s ease;border-radius:inherit}.nav-tab[data-v-81b5147d]:hover:before{opacity:1}.nav-tab[data-v-81b5147d]:hover{color:#1e3a8a;transform:translateY(-1px);border-color:#3b82f64d;box-shadow:0 4px 12px #3b82f633}.nav-tab.active[data-v-81b5147d]{background:var(--color-gradient-primary);color:#fff;box-shadow:0 4px 12px #1d4ed84d;border-color:#fff3;position:relative}.nav-tab.active[data-v-81b5147d]:after{content:"";position:absolute;bottom:-2px;left:50%;transform:translate(-50%);width:20px;height:2px;background:#fff;border-radius:1px}.nav-tab.active[data-v-81b5147d]:before{opacity:0}.profile[data-v-81b5147d]{display:flex;align-items:center;gap:.7rem}.profile-btn[data-v-81b5147d]{width:38px;height:38px;border-radius:50%;background:#3b82f61a;color:var(--color-primary);font-weight:600;font-size:1.1rem;border:2px solid rgba(59,130,246,.2);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .3s ease}.profile-btn[data-v-81b5147d]:hover{background:#3b82f633;border-color:#3b82f666;transform:translateY(-1px);box-shadow:0 4px 8px #3b82f633}.profile-menu[data-v-81b5147d]{position:absolute;top:60px;right:2rem;background:#fff;color:var(--color-text);border-radius:12px;box-shadow:0 10px 25px -3px #0000001a,0 4px 6px -2px #0000000d;min-width:160px;padding:.5rem 0;z-index:200;display:none;border:1px solid rgba(59,130,246,.1)}.profile-menu.active[data-v-81b5147d]{display:block}.profile-menu[data-v-81b5147d]:before{content:"";position:absolute;top:-8px;right:20px;width:0;height:0;border-left:8px solid transparent;border-right:8px solid transparent;border-bottom:8px solid #fff}.profile-menu-wrapper[data-v-81b5147d]{margin-left:auto}@media (max-width: 900px){.nav-container[data-v-81b5147d]{padding:0 .5rem;flex-wrap:nowrap}.nav-tab[data-v-81b5147d]{padding:.2rem;font-size:.98rem;vertical-align:center;line-height:1.2;text-align:center}.logo[data-v-81b5147d]{font-family:SF Pro Display,Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:1.2rem;font-weight:800;margin-right:.3rem;letter-spacing:-.03em;flex-shrink:0;white-space:nowrap;min-width:fit-content}}[data-theme=dark] header[data-v-81b5147d]{background:linear-gradient(135deg,#1e293b,#334155);border-bottom-color:#ffffff1a}[data-theme=dark] header[data-v-81b5147d]:before{opacity:.2}[data-theme=dark] .logo[data-v-81b5147d]{background:linear-gradient(135deg,#60a5fa,#93c5fd);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}[data-theme=dark] .logo[data-v-81b5147d]:hover{background:linear-gradient(135deg,#93c5fd,#dbeafe);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}[data-theme=dark] .nav-tab[data-v-81b5147d]{color:#f1f5f9}[data-theme=dark] .nav-tab[data-v-81b5147d]:hover{color:#60a5fa}[data-theme=dark] .nav-tab.active[data-v-81b5147d]{background:var(--color-gradient-primary);color:#fff}[data-theme=dark] .profile-btn[data-v-81b5147d]{background:#60a5fa1a;color:#60a5fa;border-color:#60a5fa33}[data-theme=dark] .profile-btn[data-v-81b5147d]:hover{background:#60a5fa33;border-color:#60a5fa66}[data-theme=dark] .profile-menu[data-v-81b5147d]{background:#1e293b;color:#f1f5f9;border-color:#60a5fa1a}[data-theme=dark] .profile-menu[data-v-81b5147d]:before{border-bottom-color:#1e293b}.toast[data-v-b7a5dfb1]{padding:14px 28px;margin:10px;border-radius:var(--md-radius);color:var(--md-on-primary);background-color:var(--md-primary);box-shadow:var(--md-elevation-2);cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);max-width:340px;word-break:break-word;z-index:1000;position:relative;overflow:hidden}.toast--success[data-v-b7a5dfb1]{background-color:var(--md-primary);color:var(--md-on-primary)}.toast--error[data-v-b7a5dfb1]{background-color:var(--md-error);color:var(--md-on-error)}.toast--warning[data-v-b7a5dfb1]{background-color:var(--color-warning, #ffb300);color:var(--md-on-primary, #222)}.toast--info[data-v-b7a5dfb1]{background-color:var(--md-secondary);color:var(--md-on-secondary)}.toast[data-v-b7a5dfb1]:active:after,.toast[data-v-b7a5dfb1]:hover:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:var(--md-state-hover);border-radius:inherit;pointer-events:none}.toast--top-left[data-v-b7a5dfb1]{position:fixed;top:24px;left:24px}.toast--top-right[data-v-b7a5dfb1]{position:fixed;top:24px;right:24px}.toast--bottom-left[data-v-b7a5dfb1]{position:fixed;bottom:24px;left:24px}.toast--bottom-right[data-v-b7a5dfb1]{position:fixed;bottom:24px;right:24px}.toast--bottom-center[data-v-b7a5dfb1]{position:fixed;bottom:24px;left:50%;transform:translate(-50%)}.toast-enter-from[data-v-b7a5dfb1],.toast-leave-to[data-v-b7a5dfb1]{opacity:0;transform:translateY(-30px)}.toast-enter-to[data-v-b7a5dfb1],.toast-leave-from[data-v-b7a5dfb1]{opacity:1;transform:translateY(0)}.toast-leave-active[data-v-b7a5dfb1]{position:absolute}.mobile-nav-bar[data-v-d3025023]{position:fixed;left:0;right:0;bottom:0;height:62px;background:linear-gradient(90deg,#aee9fa,#4fd1c5);border-top-left-radius:18px;border-top-right-radius:18px;box-shadow:0 -2px 16px #00000014;display:flex;justify-content:space-around;align-items:center;z-index:1000;animation:nav-fade-in-d3025023 .5s;transition:background .3s}.mobile-nav-item[data-v-d3025023]{flex:1;text-align:center;color:#fff;text-decoration:none;font-size:13px;display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;border-radius:16px;margin:0 4px;transition:background .2s,color .2s,box-shadow .2s;position:relative;overflow:hidden;padding-top:2px}.mobile-nav-item[data-v-d3025023]:not(:last-child):after{content:"";position:absolute;right:-4px;top:16%;height:68%;width:1px;background:#ffffff52;pointer-events:none;transition:background .2s}[data-theme=dark] .mobile-nav-item[data-v-d3025023]:not(:last-child):after{background:#ffffff21}.mobile-nav-item .icon[data-v-d3025023]{font-size:26px;margin-bottom:1px;transition:transform .18s}.mobile-nav-item.active[data-v-d3025023]{background:#ffffff38;color:#1976d2;box-shadow:0 2px 8px #00000014}.mobile-nav-item:active .icon[data-v-d3025023]{transform:scale(.92)}.mobile-nav-item[data-v-d3025023]:hover{background:#ffffff21;color:#fff}.slide-up-enter-active[data-v-d3025023],.slide-up-leave-active[data-v-d3025023]{transition:transform .35s cubic-bezier(.4,1.6,.6,1),opacity .35s}.slide-up-enter-from[data-v-d3025023]{transform:translateY(100%);opacity:0}.slide-up-enter-to[data-v-d3025023],.slide-up-leave-from[data-v-d3025023]{transform:translateY(0);opacity:1}.slide-up-leave-to[data-v-d3025023]{transform:translateY(100%);opacity:0}@keyframes nav-fade-in-d3025023{0%{opacity:0;transform:translateY(100%)}to{opacity:1;transform:translateY(0)}}[data-theme=dark] .mobile-nav-bar[data-v-d3025023]{background:linear-gradient(90deg,#233a4d,#319795)}[data-theme=dark] .mobile-nav-item[data-v-d3025023]{color:#e6f7fa}[data-theme=dark] .mobile-nav-item.active[data-v-d3025023]{background:#ffffff1a;color:#fff}#app[data-v-aec3e340]{width:100%;height:100%;display:flex;flex-direction:column;background:transparent}.main-content[data-v-aec3e340]{box-sizing:border-box;margin-top:var(--header-height)!important;flex:1;margin:0 auto;height:100%;width:100%;overflow:auto;background:transparent;position:relative}@media (max-width: 900px){.main-content[data-v-aec3e340]{margin-top:var(--header-height);padding-bottom:5rem}}.fade-enter-active[data-v-aec3e340],.fade-leave-active[data-v-aec3e340]{transition:opacity .4s}.fade-enter-from[data-v-aec3e340],.fade-leave-to[data-v-aec3e340]{opacity:0}.fade-enter-to[data-v-aec3e340],.fade-leave-from[data-v-aec3e340]{opacity:1}.error-page[data-v-ca2695d6]{padding:2rem;text-align:center}h1[data-v-ca2695d6]{color:#e67e22;margin-bottom:1rem}p[data-v-ca2695d6]{color:#666}.error-page[data-v-81b8e7e7]{padding:2rem;text-align:center}h1[data-v-81b8e7e7]{color:#e74c3c;margin-bottom:1rem}p[data-v-81b8e7e7]{color:#666}