:root{--color-quant:#2D7FF9;--color-verbal:#F59E0B;--color-vocab:#8B5CF6;--color-column:#00A87F;--color-primary:#2D7FF9;--color-primary-light:#DBEAFE;--color-primary-dark:#1D4ED8;--color-background:#F8F4EF;--color-text:#475569;--color-text-secondary:#64748B;--color-border:#E2E8F0;--color-error:#E11D48;--color-success:#10B981;--color-warning:#F59E0B;--color-info:#2D7FF9;--color-on-accent:#F3F3F3;--color-surface:#FFFFFF;--color-card:#FFFFFF;--color-gray-50:#F8FAFC;--color-gray-100:#F1F5F9;--color-gray-200:#E2E8F0;--color-gray-300:#CBD5E1;--color-gray-400:#94A3B8;--color-gray-500:#64748B;--color-gray-600:#475569;--color-gray-700:#334155;--color-gray-800:#1E293B;--color-gray-900:#0F172A;--space-1:8px;--space-2:12px;--space-3:16px;--space-4:20px;--space-5:24px;--space-6:32px;--space-7:40px;--radius-sm:8px;--radius:12px;--radius-lg:16px;--radius-xl:20px;--radius-2xl:24px;--shadow-sm:0 1px 2px rgba(0,0,0,0.05);--shadow-md:0 2px 4px rgba(0,0,0,0.1);--shadow-lg:0 4px 8px rgba(0,0,0,0.15);--text-caption:11px;--text-overline:12px;--text-footnote:13px;--text-body:14px;--text-callout:16px;--text-title3:18px;--text-title2:20px;--text-title1:24px;--text-display3:28px;--text-display2:32px;--text-display1:40px;--weight-medium:500;--weight-semibold:600;--weight-bold:700;--weight-extrabold:800;--leading-tight:1.2;--leading-snug:1.35;--leading-normal:1.5;--leading-relaxed:1.8}.dark{--color-quant:#60A5FA;--color-verbal:#FBBF24;--color-vocab:#A78BFA;--color-column:#34D399;--color-primary:#60A5FA;--color-primary-light:#93C5FD;--color-primary-dark:#2D7FF9;--color-background:#1A1B26;--color-text:#E0E1E6;--color-text-secondary:#94A3B8;--color-border:#2E3245;--color-error:#F87171;--color-success:#34D399;--color-warning:#FCD34D;--color-info:#67E8F9;--color-on-accent:#F3F3F3;--color-surface:#1F2937;--color-card:#1F2937;--color-gray-50:#1F2937;--color-gray-100:#1F2937;--color-gray-200:#2E3245;--color-gray-300:#374151;--color-gray-400:#4B5563;--color-gray-500:#6B7280;--color-gray-600:#9CA3AF;--color-gray-700:#D1D5DB;--color-gray-800:#E5E7EB;--color-gray-900:#F3F4F6}@media (prefers-color-scheme:dark){:root:not(.light){--color-quant:#60A5FA;--color-verbal:#FBBF24;--color-vocab:#A78BFA;--color-column:#34D399;--color-primary:#60A5FA;--color-primary-light:#93C5FD;--color-primary-dark:#2D7FF9;--color-background:#1A1B26;--color-text:#E0E1E6;--color-text-secondary:#94A3B8;--color-border:#2E3245;--color-error:#F87171;--color-success:#34D399;--color-warning:#FCD34D;--color-info:#67E8F9;--color-on-accent:#F3F3F3;--color-surface:#1F2937;--color-card:#1F2937;--color-gray-50:#1F2937;--color-gray-100:#1F2937;--color-gray-200:#2E3245;--color-gray-300:#374151;--color-gray-400:#4B5563;--color-gray-500:#6B7280;--color-gray-600:#9CA3AF;--color-gray-700:#D1D5DB;--color-gray-800:#E5E7EB;--color-gray-900:#F3F4F6}}@font-face{font-family:Plus Jakarta Sans;src:url(/fonts/PlusJakartaSans-Medium.ttf) format("truetype");font-weight:400 500;font-style:normal;font-display:swap}@font-face{font-family:Plus Jakarta Sans;src:url(/fonts/PlusJakartaSans-SemiBold.ttf) format("truetype");font-weight:600;font-style:normal;font-display:swap}@font-face{font-family:Plus Jakarta Sans;src:url(/fonts/PlusJakartaSans-Bold.ttf) format("truetype");font-weight:700;font-style:normal;font-display:swap}@font-face{font-family:Plus Jakarta Sans;src:url(/fonts/PlusJakartaSans-ExtraBold.ttf) format("truetype");font-weight:800 900;font-style:normal;font-display:swap}*{margin:0;padding:0;box-sizing:border-box}:root{--footer-height:60px;--footer-spacing:calc(var(--footer-height) + env(safe-area-inset-bottom, 0px));--primary:var(--color-primary);--primary-dark:var(--color-primary-dark);--primary-light:var(--color-primary-light);--secondary:var(--color-vocab);--success:var(--color-success);--warning:var(--color-warning);--danger:var(--color-error);--dark:var(--color-text);--gray:var(--color-text-secondary);--light-gray:var(--color-border);--bg-gray:var(--color-background);--white:var(--color-card);--border-radius:var(--radius);--transition:all 0.2s ease}.dark{--bg-gray:var(--color-surface)}@media (prefers-color-scheme:dark){:root:not(.light){--bg-gray:var(--color-surface)}}body,html{font-family:"Plus Jakarta Sans",var(--font-noto-sans-jp),"Noto Sans JP",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6;color:var(--color-text);background:var(--color-background);min-height:100vh;min-height:100dvh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}html[lang=zh-CN],html[lang=zh-CN] body{font-family:"Plus Jakarta Sans",var(--font-noto-sans-sc),"Noto Sans SC",var(--font-noto-sans-jp),"PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}h1{font-size:2.5rem;margin-bottom:1rem}h1,h2{font-weight:700;color:var(--dark)}h2{font-size:2rem;margin-bottom:.875rem}h3{font-size:1.5rem;font-weight:600;margin-bottom:.75rem;color:var(--dark)}p{margin-bottom:1rem;color:var(--gray)}.container{max-width:1200px;margin:0 auto;padding:0 1rem}.btn{padding:.75rem 1.5rem;border-radius:var(--border-radius);font-weight:600;text-decoration:none;transition:var(--transition);display:inline-block;cursor:pointer;border:none;font-size:1rem;text-align:center}.btn-primary{background:var(--primary);color:white}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn-secondary{background:transparent;color:var(--primary);border:2px solid var(--primary)}.btn-secondary:hover{background:var(--primary);color:white}.btn-success{background:var(--success);color:white}.btn-danger{background:var(--danger);color:white}.btn-block{width:100%;display:block}.form-group{margin-bottom:1.5rem}.form-label{display:block;margin-bottom:.5rem;font-weight:600;color:var(--dark)}.form-input{width:100%;padding:.75rem 1rem;border:1px solid var(--light-gray);border-radius:var(--border-radius);font-size:1rem;transition:var(--transition)}.form-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(102,126,234,.1)}.card{background:var(--color-card);border-radius:var(--radius);padding:var(--space-3);box-shadow:var(--shadow-md);transition:var(--transition)}.card:hover{box-shadow:var(--shadow-lg)}.nav{background:white;box-shadow:0 1px 3px rgba(0,0,0,.1);padding:1rem 0;position:-webkit-sticky;position:sticky;top:0;z-index:100}.nav-container{display:flex;justify-content:space-between;align-items:center}.nav-brand{font-size:1.5rem;font-weight:700;color:var(--primary);text-decoration:none}.nav-menu{display:flex;gap:2rem;align-items:center;list-style:none}.nav-link{color:var(--gray);text-decoration:none;transition:var(--transition);font-weight:500}.nav-link.active,.nav-link:hover{color:var(--primary)}.hero{background:linear-gradient(135deg,var(--primary) 0,var(--secondary) 100%);color:white;padding:6rem 1rem;text-align:center}.hero h1{color:white;font-size:3rem;margin-bottom:1.5rem}.hero p{color:rgba(255,255,255,.9);font-size:1.25rem;max-width:600px;margin:0 auto 2rem}.grid{display:grid;grid-gap:2rem;gap:2rem}.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.grid-3{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.grid-4,.stats-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}.stats-grid{display:grid;grid-gap:2rem;gap:2rem;margin:2rem 0}.stat-card{background:white;padding:1.5rem;border-radius:var(--border-radius);box-shadow:0 1px 3px rgba(0,0,0,.1);text-align:center}.stat-value{font-size:2rem;font-weight:700;color:var(--primary)}.stat-label{color:var(--gray);margin-top:.5rem}.dashboard{padding:2rem 0;min-height:calc(100vh - 80px)}.dashboard-header{margin-bottom:2rem}.dashboard-grid{display:grid;grid-gap:2rem;gap:2rem;grid-template-columns:1fr}@media (min-width:768px){.dashboard-grid{grid-template-columns:250px 1fr}}.sidebar{background:white;border-radius:var(--border-radius);padding:1.5rem;height:-moz-fit-content;height:fit-content}.sidebar-menu{list-style:none}.sidebar-item{margin-bottom:.5rem}.sidebar-link{display:block;padding:.75rem 1rem;color:var(--gray);text-decoration:none;border-radius:var(--border-radius);transition:var(--transition)}.sidebar-link.active,.sidebar-link:hover{background:var(--bg-gray);color:var(--primary)}.quiz-container{max-width:800px;margin:0 auto;padding:2rem 0}.quiz-card{background:white;border-radius:var(--border-radius);padding:2rem;box-shadow:0 2px 8px rgba(0,0,0,.1)}.quiz-progress{display:flex;justify-content:space-between;margin-bottom:2rem;padding-bottom:1rem;border-bottom:2px solid var(--light-gray)}.quiz-question{font-size:1.5rem;margin-bottom:2rem;color:var(--dark)}.quiz-options{display:grid;grid-gap:1rem;gap:1rem}.quiz-option{padding:14px 16px;border:2px solid var(--color-border);border-radius:var(--radius);cursor:pointer;transition:var(--transition);background:var(--color-card);text-align:left;font-size:1.0625rem;font-weight:500;color:var(--color-text)}.quiz-option.selected,.quiz-option:hover{border-color:var(--color-primary);background:color-mix(in srgb,var(--color-primary) 5%,var(--color-card))}.quiz-option.correct{border-color:var(--color-success);background:color-mix(in srgb,var(--color-success) 18%,var(--color-card))}.quiz-option.incorrect{border-color:var(--color-error);background:color-mix(in srgb,var(--color-error) 18%,var(--color-card))}.study-card{background:white;border-radius:var(--border-radius);padding:2rem;box-shadow:0 2px 8px rgba(0,0,0,.1);text-align:center;min-height:300px;display:flex;flex-direction:column;justify-content:center;cursor:pointer;transition:var(--transition)}.study-card:hover{box-shadow:0 4px 12px rgba(0,0,0,.15)}.study-word{font-size:2rem;font-weight:700;color:var(--primary);margin-bottom:1rem}.study-type{color:var(--gray);font-style:italic;margin-bottom:2rem}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .5s ease}.loading{display:flex;justify-content:center;align-items:center;min-height:200px}.spinner{border-top:3px solid var(--light-gray);border:3px solid var(--light-gray);border-top-color:var(--primary);border-radius:50%;width:40px;height:40px;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}@media (max-width:768px){h1{font-size:2rem}.hero h1{font-size:2.5rem}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}@media (prefers-reduced-motion:reduce){:root{--transition:none}*,:after,:before{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}.ConsentBanner_banner__8wYHW{position:fixed;left:0;right:0;bottom:0;z-index:1000;background:var(--color-surface);color:var(--color-text);border-top:1px solid var(--color-border);box-shadow:var(--shadow-lg);padding:var(--space-3) var(--space-4);padding-bottom:calc(var(--space-3) + env(safe-area-inset-bottom, 0px));display:flex;flex-direction:column;gap:var(--space-2);animation:ConsentBanner_slide-up__xOwHR .2s ease-out}@media (prefers-reduced-motion:reduce){.ConsentBanner_banner__8wYHW{animation:none}}@keyframes ConsentBanner_slide-up__xOwHR{0%{transform:translateY(100%)}to{transform:translateY(0)}}.ConsentBanner_message___Dqg5{margin:0;font-size:14px;line-height:1.5}.ConsentBanner_actions__ptyq7{display:flex;flex-wrap:wrap;align-items:center;gap:var(--space-2)}.ConsentBanner_actions__ptyq7 button{font:inherit;font-size:14px;font-weight:600;padding:var(--space-1) var(--space-3);border-radius:var(--radius);border:1px solid transparent;cursor:pointer;transition:var(--transition)}.ConsentBanner_primary__FZ3MI{background:var(--color-primary);color:var(--color-on-accent)}.ConsentBanner_primary__FZ3MI:hover{background:var(--color-primary-dark)}.ConsentBanner_secondary___M1Yy{background:transparent;color:var(--color-text);border-color:var(--color-border)}.ConsentBanner_secondary___M1Yy:hover{background:var(--color-gray-100)}.ConsentBanner_link__nuwvT{margin-left:auto;font-size:13px;color:var(--color-primary);text-decoration:underline}.ConsentBanner_link__nuwvT:hover{color:var(--color-primary-dark)}@media (min-width:640px){.ConsentBanner_banner__8wYHW{flex-direction:row;align-items:center;gap:var(--space-4)}.ConsentBanner_actions__ptyq7{flex-shrink:0}}