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20px;border:none;border-radius:var(--radius-md);background:var(--color-accent);color:var(--color-text-on-accent);font-size:13px;font-weight:600;font-family:var(--font-body);cursor:pointer;transition:background var(--transition-fast)}.btn-practice[data-v-8917f3d7]:hover{background:var(--color-accent-hover)}.btn-delete[data-v-8917f3d7]{padding:8px 16px;border:1px solid var(--color-error);border-radius:var(--radius-md);background:none;color:var(--color-error);font-size:13px;font-family:var(--font-body);cursor:pointer;transition:all var(--transition-fast)}.btn-delete[data-v-8917f3d7]:hover{background:var(--color-error-subtle)}.modal-overlay[data-v-8917f3d7]{position:fixed;inset:0;background:#0006;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:2000}.modal-card[data-v-8917f3d7]{background:var(--color-surface-solid);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:24px;width:360px;max-width:90vw;box-shadow:var(--shadow-floating)}.modal-card h3[data-v-8917f3d7]{color:var(--color-text);margin:0 0 12px;font-size:16px;font-family:var(--font-display);font-weight:600}.modal-text[data-v-8917f3d7]{color:var(--color-text-secondary);font-size:14px;font-family:var(--font-body);margin:0 0 20px;line-height:1.5}.modal-actions[data-v-8917f3d7]{display:flex;gap:8px;justify-content:flex-end}.btn-cancel[data-v-8917f3d7]{padding:8px 16px;border:1px solid var(--color-border-strong);border-radius:var(--radius-md);background:none;color:var(--color-text-secondary);cursor:pointer;font-size:14px;font-family:var(--font-body);transition:all var(--transition-fast)}.btn-cancel[data-v-8917f3d7]:hover{color:var(--color-text);background:var(--color-surface-hover)}.btn-confirm-delete[data-v-8917f3d7]{padding:8px 16px;border:none;border-radius:var(--radius-md);background:var(--color-error);color:var(--color-text-on-accent);cursor:pointer;font-size:14px;font-family:var(--font-body);transition:background var(--transition-fast)}.btn-confirm-delete[data-v-8917f3d7]:hover{opacity:.9}.btn-confirm-delete[data-v-8917f3d7]:disabled{opacity:.5;cursor:not-allowed}@media(max-width:1024px){.sync-band[data-v-8917f3d7]{align-items:stretch;flex-direction:column}.sync-band-action[data-v-8917f3d7]{width:100%}}.learning-page[data-v-81b84890]{min-height:100vh;background:var(--color-bg);color:var(--color-text)}.learning-nav[data-v-81b84890]{display:flex;align-items:center;justify-content:space-between;max-width:640px;margin:0 auto;padding:var(--space-5) var(--space-5) var(--space-4);border-bottom:1px solid var(--color-divider)}.back-link[data-v-81b84890]{color:var(--color-accent);text-decoration:none;font-family:var(--font-body);font-size:14px;transition:color var(--transition-fast)}.back-link[data-v-81b84890]:hover{color:var(--color-accent-hover)}.nav-title[data-v-81b84890]{font-family:var(--font-display);font-size:16px;font-weight:600;color:var(--color-text)}.nav-spacer[data-v-81b84890]{width:80px}.learning-content[data-v-81b84890]{max-width:720px;margin:0 auto;padding:var(--space-5) var(--space-4) var(--space-8)}.loading-state[data-v-81b84890]{display:flex;align-items:center;justify-content:center;gap:10px;padding:80px 0;color:var(--color-text-muted);font-family:var(--font-body);font-size:14px}.loading-spinner[data-v-81b84890]{width:20px;height:20px;border:2px solid var(--color-accent-subtle);border-top-color:var(--color-accent);border-radius:50%;animation:spin-81b84890 .8s linear infinite}@keyframes spin-81b84890{to{transform:rotate(360deg)}}.empty-state[data-v-81b84890]{text-align:center;padding:80px 20px}.empty-icon[data-v-81b84890]{font-size:48px;margin-bottom:var(--space-4)}.empty-text[data-v-81b84890]{color:var(--color-text-muted);font-family:var(--font-body);font-size:15px;margin-bottom:var(--space-4)}.start-link[data-v-81b84890]{display:inline-block;padding:10px 24px;border-radius:var(--radius-md);background:var(--color-accent);color:var(--color-text-on-accent);text-decoration:none;font-family:var(--font-body);font-size:14px;font-weight:500;transition:background var(--transition-fast);box-shadow:var(--shadow-subtle)}.start-link[data-v-81b84890]:hover{background:var(--color-accent-hover)}.summary-row[data-v-81b84890]{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-3);margin-bottom:var(--space-5)}.summary-card[data-v-81b84890]{display:flex;flex-direction:column;align-items:center;gap:6px;padding:var(--space-4) var(--space-3);background:var(--color-surface);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-subtle)}.summary-indicator[data-v-81b84890]{width:8px;height:8px;border-radius:50%}.summary-indicator.mastered[data-v-81b84890]{background:var(--color-success)}.summary-indicator.familiar[data-v-81b84890]{background:var(--color-gold)}.summary-indicator.learning[data-v-81b84890]{background:var(--color-info)}.summary-value[data-v-81b84890]{font-family:var(--font-display);font-size:28px;font-weight:700}.summary-value.total[data-v-81b84890]{color:var(--color-accent)}.summary-value.mastered[data-v-81b84890]{color:var(--color-success)}.summary-value.familiar[data-v-81b84890]{color:var(--color-gold)}.summary-value.learning[data-v-81b84890]{color:var(--color-info)}.summary-label[data-v-81b84890]{font-family:var(--font-body);font-size:13px;color:var(--color-text-muted)}.sort-bar[data-v-81b84890]{display:flex;gap:var(--space-2);margin-bottom:var(--space-4)}.sort-btn[data-v-81b84890]{padding:6px var(--space-4);border-radius:var(--radius-md);border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text-secondary);font-family:var(--font-body);font-size:13px;cursor:pointer;transition:all var(--transition-fast)}.sort-btn[data-v-81b84890]:hover{color:var(--color-text);border-color:var(--color-border-strong)}.sort-btn.active[data-v-81b84890]{background:var(--color-accent-subtle);border-color:var(--color-accent);color:var(--color-accent)}.word-list[data-v-81b84890]{display:flex;flex-direction:column;gap:var(--space-2)}.word-row[data-v-81b84890]{padding:14px var(--space-4);background:var(--color-surface);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--color-border);border-radius:var(--radius-lg);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.word-row[data-v-81b84890]:hover{border-color:var(--color-border-strong);box-shadow:var(--shadow-subtle)}.word-main[data-v-81b84890]{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}.word-text[data-v-81b84890]{font-family:var(--font-body);font-size:16px;font-weight:600;color:var(--color-text)}.mastery-dots[data-v-81b84890]{display:flex;gap:var(--space-1)}.dot[data-v-81b84890]{width:10px;height:10px;border-radius:50%;background:var(--color-border-strong);transition:background var(--transition-fast)}.dot.filled.color-green[data-v-81b84890]{background:var(--color-success)}.dot.filled.color-yellow[data-v-81b84890]{background:var(--color-gold)}.dot.filled.color-blue[data-v-81b84890]{background:var(--color-info)}.word-meta[data-v-81b84890]{display:flex;gap:var(--space-4);flex-wrap:wrap}.meta-item[data-v-81b84890]{font-size:12px;color:var(--color-text-muted)}.pagination[data-v-81b84890]{display:flex;align-items:center;justify-content:center;gap:var(--space-4);margin-top:var(--space-5);padding-top:var(--space-4);border-top:1px solid var(--color-divider)}.page-btn[data-v-81b84890]{padding:var(--space-2) 18px;border-radius:var(--radius-md);border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-accent);font-family:var(--font-body);font-size:13px;cursor:pointer;transition:all var(--transition-fast)}.page-btn[data-v-81b84890]:hover:not(:disabled){background:var(--color-accent-subtle);border-color:var(--color-accent)}.page-btn[data-v-81b84890]:disabled{color:var(--color-text-muted);cursor:not-allowed;opacity:.5}.page-info[data-v-81b84890]{font-size:13px;color:var(--color-text-muted)}@media(max-width:480px){.summary-row[data-v-81b84890]{grid-template-columns:repeat(2,1fr)}.word-meta[data-v-81b84890]{gap:10px}.learning-nav[data-v-81b84890]{padding:var(--space-3) var(--space-4)}.learning-content[data-v-81b84890]{padding:var(--space-4) var(--space-4) 40px}}.not-found[data-v-77b0bd4b]{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:60vh;text-align:center;padding:var(--space-6)}.not-found-code[data-v-77b0bd4b]{font-family:var(--font-display);font-size:6rem;font-weight:700;color:var(--color-text-muted);line-height:1;margin-bottom:var(--space-4)}.not-found-text[data-v-77b0bd4b]{font-size:1.125rem;color:var(--color-text-secondary);margin-bottom:var(--space-6)}.not-found-link[data-v-77b0bd4b]{display:inline-flex;align-items:center;padding:12px 24px;background:var(--color-accent);color:var(--color-text-on-accent);border-radius:var(--radius-md);font-weight:500;text-decoration:none;transition:all var(--transition-fast)}.not-found-link[data-v-77b0bd4b]:hover{background:var(--color-accent-hover);transform:translateY(-1px)}:root{--color-bg: #F2EBDD;--color-bg-alt: #E4D9C4;--color-surface: rgba(var(--color-surface-rgb), .68);--color-surface-hover: rgba(var(--color-surface-rgb), .88);--color-surface-solid: #FAF5E9;--color-text: #151918;--color-text-secondary: #3F4845;--color-text-muted: #6F746E;--color-text-on-accent: #FFF8E9;--color-accent: #AD2029;--color-accent-hover: #861820;--color-accent-bold: #6F141A;--color-gold: #B38A43;--color-indigo: #284F69;--color-indigo-deep: #17384C;--color-success: #426A53;--color-error: #A31E27;--color-info: #315F7B;--color-bg-rgb: 242, 235, 221;--color-surface-rgb: 255, 252, 244;--color-text-rgb: 21, 25, 24;--color-accent-rgb: 173, 32, 41;--color-gold-rgb: 179, 138, 67;--color-indigo-rgb: 40, 79, 105;--color-success-rgb: 66, 106, 83;--color-error-rgb: 163, 30, 39;--color-info-rgb: 49, 95, 123;--color-on-accent-rgb: 255, 248, 233;--color-accent-subtle: rgba(var(--color-accent-rgb), .095);--color-gold-subtle: rgba(var(--color-gold-rgb), .13);--color-indigo-subtle: rgba(var(--color-indigo-rgb), .105);--color-success-subtle: rgba(var(--color-success-rgb), .11);--color-error-subtle: rgba(var(--color-error-rgb), .09);--color-info-subtle: rgba(var(--color-info-rgb), .1);--color-border: rgba(25, 31, 29, .11);--color-border-strong: rgba(25, 31, 29, .21);--color-divider: rgba(var(--color-indigo-rgb), .15);--color-overlay: rgba(11, 17, 18, .58);--color-overlay-light: rgba(11, 17, 18, .11);--color-overlay-medium: rgba(11, 17, 18, .22);--color-nav-bg: rgba(var(--color-bg-rgb), .82);--color-toolbar-bg: rgba(var(--color-bg-rgb), .9);--color-input-bg: rgba(var(--color-surface-rgb), .75);--color-input-bg-hover: rgba(var(--color-surface-rgb), .94);--color-accent-border: rgba(var(--color-accent-rgb), .21);--color-accent-border-strong: rgba(var(--color-accent-rgb), .48);--color-success-border: rgba(var(--color-success-rgb), .42);--color-error-border: rgba(var(--color-error-rgb), .44);--color-info-border: rgba(var(--color-info-rgb), .4);--color-footer-bg: #131C1E;--color-footer-text: #E9DECA;--color-footer-muted: #A2A59D;--texture-paper: radial-gradient(circle at 20% 24%, rgba(91, 67, 40, .045) 0 .7px, transparent .95px), radial-gradient(circle at 72% 66%, rgba(40, 79, 105, .04) 0 .65px, transparent .9px), repeating-linear-gradient(96deg, rgba(88, 65, 39, .016) 0 1px, transparent 1px 5px), linear-gradient(180deg, rgba(255, 253, 247, .3), rgba(216, 203, 177, .1));--texture-paper-size: 17px 19px, 23px 21px, 8px 8px, auto;--texture-paper-opacity: .5;--shadow-subtle: 0 2px 9px rgba(17, 30, 32, .055);--shadow-standard: 0 6px 24px rgba(17, 30, 32, .085);--shadow-elevated: 0 12px 38px rgba(17, 30, 32, .13);--shadow-floating: 0 20px 58px rgba(17, 30, 32, .18);--landscape-opacity: 1;--landscape-visibility: visible;--ink-ripple-opacity: .88;--ink-ripple-visibility: visible;--chain-original-bg-rgb: 232, 226, 214;--chain-original-surface-rgb: 255, 255, 255;--chain-original-accent-rgb: 197, 112, 75;--chain-original-gold-rgb: 184, 150, 62;--chain-original-success-rgb: 90, 138, 92;--chain-original-error-rgb: 192, 57, 43;--chain-original-info-rgb: 91, 138, 154;--chain-original-node-1: #C77966;--chain-original-node-2: #C4A87C;--chain-original-node-3: #7A9B6D;--chain-original-node-4: #5B8A9A;--chain-original-node-5: #9B7A8E;--chain-original-muted: #8A8478;--chain-original-solid: #F5F1EB}@font-face{font-family:Literata;src:url(/assets/literata-roman-D81NEGo0.woff2) format("woff2");font-weight:300 700;font-style:normal;font-display:swap}@font-face{font-family:Literata;src:url(/assets/literata-italic-Dul3CHLD.woff2) format("woff2");font-weight:300 700;font-style:italic;font-display:swap}@font-face{font-family:Inter;src:url(/assets/inter-roman-CMLeEau1.woff2) format("woff2");font-weight:300 700;font-style:normal;font-display:swap}:root{--font-display: "Literata", "Noto Serif SC", "Songti SC", "STSongti", "SimSun", Georgia, serif;--font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", "SF Mono", monospace;--font-size-heading-3: 1.25rem;--font-size-body-small: .875rem;--font-size-caption: .75rem;--font-weight-medium: 500;--font-weight-semibold: 600;--line-height-heading: 1.3;--line-height-compact: 1.5;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--space-7: 48px;--space-8: 64px;--space-9: 96px;--space-10: 128px;--touch-target-min: 44px;--container-max: 1200px;--container-narrow: 800px;--container-compact: 40rem;--container-padding: clamp(1rem, 4vw, 2rem);--modal-max-width: 30rem;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-pill: 100px;--transition-fast: .2s ease;--transition-base: .25s ease-out;--transition-slow: .3s ease-out;--transition-page: .4s ease-in-out;--blur-overlay: 4px;--z-modal: 2000}[dir=rtl]{direction:rtl;text-align:right}[dir=rtl] .nav-left,[dir=rtl] .nav-actions,[dir=rtl] .nav-links,[dir=rtl] .nav-content,[dir=rtl] .logo-container{flex-direction:row-reverse}[dir=rtl] .logo-text{margin-left:0;margin-right:.75rem}[dir=rtl] .nav-logo{flex-direction:row-reverse}[dir=rtl] .btn-icon{margin-left:.5rem;margin-right:0;transform:scaleX(-1)}[dir=rtl] .btn-primary-large,[dir=rtl] .btn-outline-large,[dir=rtl] .trust-indicators{flex-direction:row-reverse}[dir=rtl] .check-icon{margin-left:.5rem;margin-right:0}[dir=rtl] .hero-content{text-align:right}[dir=rtl] .cta-buttons{flex-direction:row-reverse}[dir=rtl] .link-icon,[dir=rtl] .path-arrow,[dir=rtl] .chain-arrow{transform:scaleX(-1)}[dir=rtl] .chain-arrow:hover{transform:scaleX(-1) translate(-4px)}[dir=rtl] .feature-content{text-align:right}[dir=rtl] .feature-link,[dir=rtl] .footer-logo{flex-direction:row-reverse}[dir=rtl] .footer-logo-text{margin-left:0;margin-right:.75rem}[dir=rtl] .footer-bottom,[dir=rtl] .footer-legal,[dir=rtl] .nav-status,[dir=rtl] .message-group{flex-direction:row-reverse}[dir=rtl] .ai-message{align-self:flex-end;flex-direction:row}[dir=rtl] .user-message{align-self:flex-start;flex-direction:row-reverse}[dir=rtl] .ai-bubble{border-radius:.5rem .5rem 0}[dir=rtl] .user-bubble{border-radius:.5rem .5rem .5rem 0}[dir=rtl] .input-container{flex-direction:row-reverse}[dir=rtl] .text-input-wrapper{direction:rtl}[dir=rtl] .text-input{text-align:right;padding:.75rem 1rem .75rem 3rem}[dir=rtl] .send-button{left:.75rem;right:auto}[dir=rtl] .stat-item{flex-direction:row-reverse}[dir=rtl] .session-stats{text-align:right}[dir=rtl] .action-btn{flex-direction:row-reverse}[dir=rtl] .btn-icon{margin-left:.5rem;margin-right:0}[dir=rtl] .search-box{direction:rtl}[dir=rtl] .search-icon{left:auto;right:.75rem}[dir=rtl] .search-input{padding:.5rem 2.5rem .5rem 1rem;text-align:right}[dir=rtl] .filter-group,[dir=rtl] .control-filters,[dir=rtl] .control-actions,[dir=rtl] .reset-btn{flex-direction:row-reverse}[dir=rtl] .reset-icon{margin-left:.25rem;margin-right:0}[dir=rtl] .details-stats{text-align:right}[dir=rtl] .stat-row{flex-direction:row-reverse}[dir=rtl] .detail-row{flex-direction:row-reverse;text-align:right}[dir=rtl] 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