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#f4f4f5}.admin-form-section h3{font-size:1rem;font-weight:700;margin:0 0 20px;color:#18181b}.admin-form-row{display:flex;align-items:center;gap:12px;margin-bottom:16px}.admin-form-row>label{font-size:.9rem;font-weight:600;color:#18181b;min-width:80px;display:flex;align-items:center;gap:8px;cursor:pointer}#itemIcon,#itemName,.admin-form-row input[type=number],.admin-form-row input[type=text]{flex:1;border:1.5px solid #d4d4d8;border-radius:8px;height:40px}#itemIcon:focus,#itemName:focus,.admin-form-row input[type=number]:focus,.admin-form-row input[type=text]:focus{border-color:#4f46e5;box-shadow:0 0 0 3px rgba(79,70,229,.12)}.admin-form-row input[type=checkbox]{width:16px;height:16px;accent-color:#4f46e5;cursor:pointer;margin:0;flex-shrink:0}.admin-form-actions{display:flex;gap:10px;margin-top:20px}.admin-list-section{background:#fff;border-radius:12px;padding:24px;box-shadow:0 2px 16px rgba(0,0,0,.06);border:1px solid #f4f4f5}.admin-list-section h3{font-size:1rem;font-weight:700;margin:0 0 16px;color:#18181b}.admin-table{width:100%;border-collapse:collapse;font-size:.85rem}.admin-table td,.admin-table th{padding:10px 8px;text-align:left;border-bottom:1px solid #e4e4e7}.admin-table th{color:#a1a1aa;font-weight:600;font-size:.75rem}.admin-table td{color:#71717a}.btn-edit{background:#ffffff;border:1px solid #e4e4e7;padding:4px 10px;border-radius:6px;cursor:pointer;font-size:.75rem;color:#71717a}.btn-edit:hover{background:#eef2ff;border-color:#4f46e5}.btn-delete{background:#fef2f2;border:1px solid #fecaca;padding:4px 10px;border-radius:6px;cursor:pointer;font-size:.75rem;color:#e74c3c}.btn-delete:hover{background:#fee2e2}.guide-container{max-width:720px;margin:0 auto;padding:20px 0 40px}.guide-subtitle{text-align:center;font-size:.95rem;color:#52525b;margin-bottom:28px;line-height:1.6}.guide-steps{display:flex;flex-direction:column;gap:16px}.guide-step{display:flex;align-items:flex-start;gap:16px;background:#fff;border-radius:14px;padding:20px 24px;border:1px solid #e4e4e7;box-shadow:0 2px 12px rgba(0,0,0,.04);transition:transform .2s ease,box-shadow .2s ease}.guide-step:hover{transform:translateY(-2px);box-shadow:0 4px 20px rgba(0,0,0,.08)}.guide-step-num{flex-shrink:0;width:42px;height:42px;border-radius:50%;background:#4f46e5;color:#fff;font-size:1.1rem;font-weight:800;display:flex;align-items:center;justify-content:center;box-shadow:0 3px 10px rgba(79,70,229,.25)}.guide-step-body{flex:1}.guide-step-body h3{font-size:1.05rem;font-weight:700;color:#18181b;margin:0 0 6px}.guide-step-body p{font-size:.9rem;color:#52525b;margin:0;line-height:1.6}.guide-cta{text-align:center;margin-top:32px}.guide-cta .btn{font-size:1rem;padding:12px 36px;height:48px}@media (max-width:768px){.guide-container{padding:12px 8px 32px}.guide-step{padding:16px 18px;gap:12px}.guide-step-num{width:36px;height:36px;font-size:.95rem}.guide-step-body h3{font-size:.95rem}.guide-step-body p{font-size:.82rem}.guide-subtitle{font-size:.85rem;margin-bottom:20px}}@media (max-width:480px){.guide-step{padding:14px 14px;gap:10px}.guide-step-num{width:30px;height:30px;font-size:.85rem}.guide-step-body h3{font-size:.88rem}.guide-step-body p{font-size:.78rem}.guide-cta .btn{padding:10px 28px;font-size:.9rem}}.page-content{max-width:720px;margin:0 auto;padding:20px 0 40px}.page-header{text-align:center;margin-bottom:32px;padding-bottom:20px;border-bottom:1.5px solid #e4e4e7}.page-header h1{font-size:1.6rem;font-weight:700;color:#18181b;margin:0 0 8px}.page-updated{font-size:.82rem;color:#a1a1aa;margin:0}.page-section{margin-bottom:24px}.page-section h2{font-size:1.1rem;font-weight:700;color:#18181b;margin:0 0 8px}.page-section p{font-size:.92rem;color:#71717a;line-height:1.7;margin:0}.page-section a{color:#4f46e5;text-decoration:none}.page-section a:hover{text-decoration:underline}.page-email{margin-top:12px;font-size:1rem}.page-footer{max-width:960px;margin:40px auto 0;padding:24px 0 8px;text-align:center;border-top:1px solid #e4e4e7}.page-footer-links{display:flex;justify-content:center;align-items:center;gap:12px;font-size:.82rem}.page-footer-links a{color:#71717a;text-decoration:none;transition:color .2s}.page-footer-links a:hover{color:#4f46e5}.footer-sep{color:#d4d4d8}@media (max-width:768px){.page-content{padding:12px 8px 32px}.page-header h1{font-size:1.35rem}.page-section h2{font-size:1rem}.page-section p{font-size:.85rem}}.coming-soon-page{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:60vh;text-align:center;padding:40px 20px}.coming-soon-icon{font-size:64px;color:#a1a1aa;margin-bottom:24px;animation:float 3s ease-in-out infinite}@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}.coming-soon-page h1{font-size:2rem;color:#18181b;margin-bottom:12px;font-weight:700}.coming-soon-page p{font-size:1.05rem;color:#71717a;margin-bottom:32px;line-height:1.6}.letter-phase{max-width:600px;margin:0 auto;padding:0 16px;text-align:center}.letter-word-display{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;padding:20px 0;min-height:72px;align-items:center}.letter-word-slot{width:48px;height:52px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;font-weight:700;color:#18181b;background:#ffffff;border:2px solid #e4e4e7;border-radius:10px;transition:all .25s ease;cursor:default;position:relative}.letter-word-slot::after{content:'';position:absolute;bottom:8px;left:12px;right:12px;height:3px;background:#e4e4e7;border-radius:1px}.letter-word-slot.filled{border-color:#4f46e5;background:#eef2ff;color:#4f46e5;cursor:pointer}.letter-word-slot.filled::after{background:#4f46e5}.letter-word-slot.filled:hover{background:#e0e7ff;border-color:#4338ca}.letter-candidates{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;padding:16px 0}.letter-candidate-btn{width:52px;height:52px;font-size:1.3rem;font-weight:700;color:#fff;background:#4f46e5;border:none;border-radius:12px;cursor:pointer;transition:all .2s ease;box-shadow:0 3px 8px rgba(79,70,229,.25)}.letter-candidate-btn:hover{transform:translateY(-2px);box-shadow:0 5px 14px rgba(79,70,229,.35);background:#4338ca}.letter-candidate-btn:active{transform:translateY(0);box-shadow:0 1px 4px rgba(79,70,229,.2)}.letter-candidate-btn.used{background:#d4d4d8;color:#a1a1aa;cursor:not-allowed;box-shadow:none;pointer-events:none}.letter-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;padding:12px 0}.letter-actions .btn{padding:10px 22px;font-size:.95rem;font-weight:600;border-radius:12px;transition:all .2s}@media (max-width:640px){.letter-word-slot{width:40px;height:44px;font-size:1.2rem}.letter-candidate-btn{width:44px;height:44px;font-size:1.1rem;border-radius:10px}.letter-actions .btn{padding:8px 16px;font-size:.85rem}}@media (max-width:400px){.letter-word-slot{width:34px;height:38px;font-size:1rem;border-radius:8px}.letter-word-slot::after{bottom:6px;left:8px;right:8px;height:2px}.letter-candidate-btn{width:38px;height:38px;font-size:1rem;border-radius:8px}.letter-word-display{gap:5px;padding:12px 0}.letter-candidates{gap:6px;padding:10px 0}}.vocab-preview{margin:32px auto 0;max-width:720px;padding:20px 24px;background:rgba(250,250,250,.6);border:1px solid #e4e4e7;border-radius:12px}.vocab-preview-title{font-size:1.1rem;font-weight:600;color:#71717a;margin-bottom:4px}.vocab-preview-subtitle{font-size:.85rem;color:#71717a;margin-bottom:12px}.vocab-preview-list{display:grid;grid-template-columns:1fr;gap:6px}.vocab-preview-item{display:flex;align-items:baseline;gap:10px;padding:6px 10px;background:rgba(255,255,255,.7);border-radius:6px}.vocab-preview-en{font-family:Menlo,'SF Mono',Consolas,monospace;font-size:.95rem;font-weight:600;color:#52525b;min-width:120px}.vocab-preview-ch{font-size:.9rem;color:#71717a}.vocab-preview-sep{color:#a1a1aa;margin:0 2px}.auth-form{display:flex;flex-direction:column}.auth-label{display:block;font-size:.85rem;font-weight:600;color:#18181b;margin-bottom:6px}.auth-input{width:100%;height:44px;border-radius:10px;border:1.5px solid #e4e4e7;padding:0 14px;font-size:15px;font-family:inherit;color:#18181b;background:#fff;outline:0;box-sizing:border-box;transition:border-color .2s ease,box-shadow .2s ease}.auth-input::placeholder{color:#a1a1aa}.auth-input:hover{border-color:#d4d4d8}.auth-input:focus{border-color:#4f46e5;box-shadow:0 0 0 3px rgba(79,70,229,.12)}.auth-submit{width:100%;height:44px;margin-top:20px;border:none;border-radius:12px;background:#4f46e5;color:#fff;font-size:.95rem;font-weight:700;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);box-shadow:0 4px 12px rgba(79,70,229,.2)}.auth-submit:hover{background:#4338ca;transform:translateY(-1px);box-shadow:0 6px 16px rgba(79,70,229,.28)}.auth-submit:active{background:#3730a3;transform:scale(.98)}.auth-submit:disabled{background:#c7d2fe;cursor:not-allowed;box-shadow:none}.auth-tab{transition:all .2s ease}.auth-message.error{display:block;background:#fdecec;color:#ef4444;border:1px solid #f5c6c6}.auth-message.success{display:block;background:#eaf7ec;color:#3c9a4a;border:1px solid #bfe3c6}
.store-tabs{display:flex;gap:8px;justify-content:center;margin:0 auto 20px;max-width:520px;background:#fff;padding:6px;border-radius:14px;border:1px solid #e4e4e7;box-shadow:0 2px 8px rgba(0,0,0,.04)}.store-tab{flex:1;padding:10px 16px;border:none;border-radius:10px;background:transparent;font-size:.9rem;font-weight:600;color:#71717a;cursor:pointer;transition:all .2s}.store-tab:hover{background:#eef2ff;color:#4f46e5}.store-tab.active{background:#4f46e5;color:#fff;box-shadow:0 2px 6px rgba(79,70,229,.35)}.store-tab-panel{max-width:800px;margin:0 auto}

/* 应用题挑战阶段 */
.problem-example{margin-top:8px;padding:14px 18px;background:#FFF8F0;border:1.5px solid #FFE3D6;border-radius:14px;font-size:1.05rem;font-weight:600;color:#333;line-height:1.6;max-width:680px;width:100%;text-align:center}
.problem-options{display:flex;flex-direction:column;gap:12px;max-width:520px;margin:20px auto 8px;width:100%;padding:0 8px}
.problem-option{width:100%;padding:14px 18px;font-size:1rem;font-weight:600;color:#333;background:#fff;border:1.5px solid #E8E0D8;border-radius:12px;cursor:pointer;transition:all .2s;text-align:left;line-height:1.5}
.problem-option:hover{border-color:#FF6B4A;background:#FFF2EB}
.problem-option:disabled{cursor:default}
.problem-option.correct{border-color:#4ECDC4;background:#F0FFFB;color:#1b7a6d}
.problem-option.wrong{border-color:#e07070;background:#fde8e8;color:#c0392b}
.pwd-field{position:relative;width:100%}.pwd-field .auth-input{padding-right:44px}.pwd-toggle{position:absolute;right:4px;top:50%;transform:translateY(-60%);border:none;background:transparent;color:#a1a1aa;font-size:1.05rem;cursor:pointer;padding:10px 12px;line-height:1}.pwd-toggle:hover{color:#4f46e5}#forgotModal{display:none;position:fixed;inset:0;background:rgba(24,24,27,.45);z-index:1000;align-items:center;justify-content:center;padding:16px}

/* ===== 语言下拉菜单（15 个模板共用） ===== */
.lang-dropdown{position:relative;display:inline-flex;border:none;background:transparent;padding:0;box-shadow:none;min-width:0}
.lang-dropdown::after{content:'';position:absolute;top:100%;left:-6px;right:-6px;height:10px;z-index:1299}
.lang-btn{height:44px;display:inline-flex;align-items:center;gap:7px;background:#fff;border:1.5px solid #e4e4e7;border-radius:12px;padding:0 14px;font-size:.82rem;font-weight:600;color:#18181b;cursor:pointer;transition:all .2s ease;font-family:inherit}
.lang-btn:hover{border-color:#4f46e5;color:#4f46e5}
.lang-btn .fa-globe{font-size:.9rem}
.lang-caret{font-size:.55rem;transition:transform .2s ease}
.lang-dropdown:hover .lang-caret,.lang-dropdown:focus-within .lang-caret{transform:rotate(180deg)}
.lang-menu{position:absolute;top:calc(100% + 8px);right:0;min-width:150px;background:#fff;border:1px solid #e4e4e7;border-radius:14px;box-shadow:0 12px 32px rgba(0,0,0,.12);padding:6px;display:none;flex-direction:column;gap:2px;z-index:1300}
.lang-dropdown:hover .lang-menu,.lang-dropdown:focus-within .lang-menu{display:flex}
.lang-menu .lang-link{display:flex;align-items:center;height:38px;border:none;border-radius:9px;padding:0 12px;font-size:.88rem;color:#18181b;box-shadow:none;transform:none}
.lang-menu .lang-link:hover{background:#f4f4f5;border-color:transparent;transform:none;box-shadow:none}
.lang-menu .lang-link.active{background:#eef2ff;color:#4f46e5;border-color:transparent}

/* ===== 词了个词：en 徽标（替换原羊图标）===== */
.en-badge{display:inline-flex;align-items:center;justify-content:center;width:21px;height:16px;border-radius:5px;background:linear-gradient(135deg,#4f46e5,#7c3aed);color:#fff;font-size:10px;font-weight:900;letter-spacing:.3px;font-style:normal;line-height:1;box-shadow:0 2px 6px rgba(79,70,229,.35);vertical-align:-2px}
.en-mark{font-size:.95rem;font-weight:900;letter-spacing:.5px;font-style:normal;color:#fff}