:root{--surface: #fbf9f5;--surface-dim: #dbdad6;--surface-bright: #fbf9f5;--surface-container-lowest: #ffffff;--surface-container-low: #f5f3ef;--surface-container: #efeeea;--surface-container-high: #eae8e4;--surface-container-highest: #e4e2de;--surface-variant: #e4e2de;--primary: #0a1b58;--primary-container: #24326e;--primary-fixed: #dde1ff;--on-primary: #ffffff;--secondary: #24695c;--secondary-container: #acf0e0;--on-secondary: #ffffff;--on-secondary-container: #2b6f62;--tertiary: #460b00;--tertiary-container: #6c1700;--on-tertiary: #ffffff;--on-surface: #1b1c1a;--on-surface-variant: #454650;--outline: #767681;--outline-variant: #c6c5d1;--font-headline: "Newsreader", Georgia, serif;--font-body: "Be Vietnam Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--radius-sm: .25rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-full: 9999px;--shadow-xs: 0 1px 2px rgba(0, 0, 0, .04);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .05), 0 1px 2px rgba(0, 0, 0, .03)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);background-color:var(--surface);color:var(--on-surface);min-height:100vh;font-size:15px;line-height:24px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.material-symbols-outlined{font-family:Material Symbols Outlined;font-weight:400;font-style:normal;font-size:20px;line-height:1;letter-spacing:normal;text-transform:none;display:inline-block;white-space:nowrap;word-wrap:normal;direction:ltr;vertical-align:middle}.minimal-header{position:sticky;top:0;left:0;right:0;width:100%;z-index:50;background:#fbf9f5eb;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid rgba(234,232,228,.7)}.minimal-header-inner{height:4rem;max-width:56rem;margin:0 auto;padding:0 1rem;display:flex;align-items:center;justify-content:space-between}@media(min-width:1024px){.minimal-header-inner{padding:0 1.5rem}}.minimal-brand{display:flex;align-items:center;gap:.5rem}.minimal-brand-title{font-family:var(--font-headline);font-size:20px;line-height:28px;font-weight:500;color:var(--primary);letter-spacing:-.01em}.minimal-brand-badge{padding:.125rem .375rem;border-radius:4px;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;background:var(--surface-container-high);color:var(--on-surface-variant);font-family:var(--font-body)}.minimal-avatar-btn{width:2rem;height:2rem;border-radius:9999px;background:var(--surface-container-high);color:var(--on-surface-variant);display:flex;align-items:center;justify-content:center;cursor:pointer;border:none;transition:background .15s ease}.minimal-avatar-btn:hover{background:var(--surface-container)}.minimal-main{max-width:56rem;margin:0 auto;width:100%;padding:3rem 1rem 2rem;display:flex;flex-direction:column}@media(min-width:1024px){.minimal-main{padding:3rem 1.5rem 2rem}}.minimal-hero{text-align:center;max-width:42rem;margin:0 auto 3rem}.minimal-hero-title{font-family:var(--font-headline);font-size:26px;line-height:34px;font-weight:500;color:var(--primary);letter-spacing:-.01em}@media(min-width:640px){.minimal-hero-title{font-size:36px;line-height:44px}}@media(min-width:1024px){.minimal-hero-title{font-size:48px;line-height:56px;letter-spacing:-.02em}}.minimal-hero-title .italic{font-style:italic;font-weight:400;color:var(--secondary)}.minimal-hero-desc{font-size:15px;line-height:24px;color:var(--on-surface-variant);margin-top:.5rem}.minimal-card{padding:1.5rem;border-radius:var(--radius-lg);background:var(--surface-container-lowest);border:1px solid rgba(234,232,228,.7);box-shadow:var(--shadow-sm);margin-bottom:1.5rem;transition:all .2s ease}@media(max-width:640px){.minimal-card{padding:1rem;margin-bottom:1rem}}.minimal-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1rem;flex-wrap:wrap;gap:.5rem}.minimal-step-label{display:flex;align-items:center;gap:.5rem}.minimal-step-num{width:1.5rem;height:1.5rem;border-radius:9999px;background:var(--primary);color:var(--on-primary);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}.minimal-step-num.green{background:var(--secondary);color:var(--on-secondary)}.minimal-card-title{font-size:18px;line-height:26px;font-weight:600;color:var(--on-surface)}@media(max-width:640px){.minimal-card-title{font-size:15px;line-height:22px}}.minimal-tag-status{font-size:12px;color:var(--secondary);display:flex;align-items:center;gap:.25rem;font-weight:500}.book-slot-box{padding:1rem;border-radius:var(--radius-md);background:var(--surface-container-low);display:flex;flex-direction:column;gap:1rem}@media(min-width:640px){.book-slot-box{flex-direction:row;align-items:center;justify-content:space-between}}.book-slot-left{display:flex;align-items:center;gap:1rem;min-width:0;flex:1}.book-icon-thumb{width:2.5rem;height:3.25rem;aspect-ratio:1 / 1.3;border-radius:var(--radius-sm);background:var(--primary-container);color:var(--primary-fixed);display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:var(--shadow-xs)}.book-slot-title{font-size:16px;line-height:24px;font-weight:600;color:var(--on-surface);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}@media(max-width:640px){.book-slot-title{font-size:14px;line-height:20px}}.book-slot-meta{font-size:13px;line-height:20px;color:var(--on-surface-variant)}@media(max-width:640px){.book-slot-meta{font-size:12px}}.btn-change-book{padding:.375rem 1rem;border-radius:var(--radius-md);background:var(--surface-container-lowest);border:1px solid var(--surface-container-high);color:var(--on-surface);font-size:12px;line-height:16px;font-weight:500;display:flex;align-items:center;justify-content:center;gap:.25rem;cursor:pointer;flex-shrink:0;box-shadow:var(--shadow-xs);transition:background .15s ease}.btn-change-book:hover{background:var(--surface-container-high)}.book-slot-empty{padding:1.25rem;border-radius:var(--radius-md);border:1.5px dashed var(--outline-variant);background:var(--surface-container-low);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.85rem;cursor:pointer;text-align:center;transition:all .2s ease}@media(min-width:640px){.book-slot-empty{flex-direction:row;align-items:center;justify-content:space-between;text-align:left;padding:1rem 1.25rem}}.book-slot-empty:hover{border-color:var(--primary);background:#24326e08}.book-slot-empty-left{display:flex;align-items:center;gap:1rem;min-width:0}.book-slot-empty-icon{width:2.5rem;height:3.25rem;aspect-ratio:1 / 1.3;border-radius:var(--radius-sm);background:var(--surface-container-high);color:var(--secondary);display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:var(--shadow-xs)}.book-slot-empty-title{font-size:15px;line-height:22px;font-weight:600;color:var(--on-surface)}@media(max-width:640px){.book-slot-empty-title{font-size:14px;line-height:20px}}.book-slot-empty-sub{font-size:12.5px;line-height:18px;color:var(--on-surface-variant);margin-top:.15rem}.philosophy-grid-minimal{display:grid;grid-template-columns:1fr;gap:.75rem}@media(min-width:640px){.philosophy-grid-minimal{grid-template-columns:repeat(2,1fr)}}@media(min-width:768px){.philosophy-grid-minimal{grid-template-columns:repeat(3,1fr)}}.philosophy-item{padding:1rem;border-radius:var(--radius-md);border:1px solid var(--surface-container-high);background:#f5f3ef80;cursor:pointer;transition:all .15s ease;display:flex;flex-direction:column;justify-content:space-between}.philosophy-item:hover{background:var(--surface-container-lowest);border-color:var(--outline-variant);box-shadow:var(--shadow-xs)}.philosophy-item.active{border:2px solid var(--primary);background:#24326e0d}.philosophy-item-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:.25rem}.philosophy-item-title{font-size:16px;line-height:24px;font-weight:600;color:var(--on-surface)}@media(max-width:640px){.philosophy-item-title{font-size:14.5px}}.philosophy-item.active .philosophy-item-title{color:var(--primary)}.philosophy-item-desc{font-size:13px;line-height:1.375;color:var(--on-surface-variant);margin-top:.25rem}@media(max-width:640px){.philosophy-item-desc{font-size:12.5px}}.minimal-prompt-drawer{margin-top:1rem}.minimal-prompt-drawer summary{cursor:pointer;list-style:none;font-size:12px;line-height:16px;font-weight:500;color:var(--on-surface-variant);display:inline-flex;align-items:center;gap:.25rem;-webkit-user-select:none;user-select:none;transition:color .15s ease}.minimal-prompt-drawer summary:hover{color:var(--primary)}.minimal-prompt-drawer summary::-webkit-details-marker{display:none}.minimal-prompt-box{margin-top:.75rem;padding:.75rem;border-radius:var(--radius-md);background:var(--surface-container-low);font-size:13px}.minimal-prompt-box textarea{width:100%;background:transparent;border:none;resize:vertical;min-height:50px;font-family:var(--font-body);font-size:13px;line-height:1.5;color:var(--on-surface);outline:none}.minimal-progress-bar{width:100%;height:.5rem;border-radius:9999px;background:var(--surface-container-high);overflow:hidden;margin-bottom:1.5rem}.minimal-progress-fill{height:100%;background:var(--secondary);border-radius:9999px;transition:width .4s ease}.minimal-action-row{display:flex;flex-direction:column;gap:.75rem}@media(min-width:640px){.minimal-action-row{flex-direction:row}}.btn-download-main{flex:1;padding:.75rem 1rem;border-radius:var(--radius-md);background:var(--secondary);color:var(--on-secondary);font-size:14px;line-height:20px;font-weight:600;display:flex;align-items:center;justify-content:center;gap:.5rem;border:none;cursor:pointer;box-shadow:var(--shadow-xs);text-decoration:none;transition:opacity .15s ease}.btn-download-main:hover{opacity:.95}.btn-download-main:disabled{opacity:.5;cursor:not-allowed}.btn-preview-secondary{padding:.75rem 1.5rem;border-radius:var(--radius-md);background:var(--surface-container-high);color:var(--on-surface);font-size:14px;line-height:20px;font-weight:600;display:flex;align-items:center;justify-content:center;gap:.5rem;border:none;cursor:pointer;transition:background .15s ease}.btn-preview-secondary:hover{background:var(--surface-dim)}.minimal-zero-row{margin-top:3rem;padding-top:2rem;border-top:1px solid rgba(234,232,228,.6);display:grid;grid-template-columns:1fr;gap:1.5rem}@media(min-width:768px){.minimal-zero-row{grid-template-columns:repeat(3,1fr)}}.minimal-zero-item{display:flex;align-items:flex-start;gap:.75rem}@media(max-width:767px){.minimal-zero-item{padding:.625rem .75rem;border-radius:var(--radius-md);background:#fff9;border:1px solid rgba(234,232,228,.4)}}.minimal-zero-icon{width:2rem;height:2rem;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;flex-shrink:0}.minimal-zero-icon.cost{background:#24695c1a;color:var(--secondary)}.minimal-zero-icon.loss{background:#0a1b581a;color:var(--primary)}.minimal-zero-icon.leak{background:#460b001a;color:var(--tertiary)}.minimal-zero-title{font-size:14px;line-height:20px;font-weight:600;color:var(--on-surface)}.minimal-zero-desc{font-size:12.5px;line-height:18px;color:var(--on-surface-variant);margin-top:.125rem}@media(min-width:768px){.minimal-zero-title{font-size:16px;line-height:24px}.minimal-zero-desc{font-size:13px;line-height:20px}}.minimal-footer{width:100%;border-top:1px solid rgba(234,232,228,.6);padding:1.25rem 1rem;background:var(--surface)}.minimal-footer-inner{max-width:56rem;margin:0 auto;display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:.5rem 1.25rem;font-size:13px;line-height:20px;color:var(--on-surface-variant)}.minimal-footer-item{display:inline-flex;align-items:center;gap:.375rem}.minimal-footer-icon{font-size:16px!important;color:var(--secondary)}.minimal-footer-divider{color:var(--outline-variant);-webkit-user-select:none;user-select:none}.desktop-text{display:none}.mobile-text{display:inline}@media(min-width:640px){.desktop-text{display:inline}.mobile-text{display:none}}.epub-reader-modal{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;display:flex;flex-direction:column;background-color:var(--surface);color:var(--on-surface);overflow:hidden}.epub-reader-header{height:56px;display:flex;align-items:center;justify-content:space-between;padding:0 1rem;background:#fbf9f5f5;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--surface-container-high);z-index:10;gap:.75rem}.epub-reader-header-left{display:flex;align-items:center;gap:.625rem;min-width:0;flex:1}.reader-book-info{display:flex;flex-direction:column;min-width:0;overflow:hidden}.reader-book-title{font-size:14px;font-weight:600;color:var(--on-surface);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:220px}.reader-book-badge{font-size:11px;color:var(--secondary);font-weight:500;letter-spacing:.02em}.epub-reader-header-center{display:flex;align-items:center;justify-content:center;gap:.5rem;flex-shrink:0}.reader-nav-btn{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:var(--radius-md);border:1px solid var(--surface-container-high);background:var(--surface-container-lowest);color:var(--on-surface);cursor:pointer;transition:all .15s ease}.reader-nav-btn:hover:not(:disabled){background:var(--surface-container);border-color:var(--outline-variant)}.reader-nav-btn:disabled{opacity:.35;cursor:not-allowed}.reader-chapter-indicator{font-size:13px;font-weight:600;color:var(--on-surface-variant);min-width:54px;text-align:center;font-feature-settings:"tnum"}.epub-reader-header-right{display:flex;align-items:center;gap:.5rem;flex:1;justify-content:flex-end}.reader-font-controls{display:inline-flex;align-items:center;background:var(--surface-container-low);border:1px solid var(--surface-container-high);border-radius:var(--radius-md);padding:2px;gap:2px}.reader-font-btn{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border:none;background:transparent;color:var(--on-surface);font-weight:600;font-size:13px;cursor:pointer;border-radius:var(--radius-sm);transition:background .15s ease}.reader-font-btn:hover:not(:disabled){background:var(--surface-container-lowest)}.reader-font-btn:disabled{opacity:.3;cursor:not-allowed}.reader-font-indicator{font-size:12px;font-weight:600;color:var(--on-surface-variant);padding:0 4px;min-width:32px;text-align:center}.reader-btn-action{display:inline-flex;align-items:center;gap:.375rem;height:32px;padding:0 .625rem;border-radius:var(--radius-md);border:1px solid var(--surface-container-high);background:var(--surface-container-lowest);color:var(--on-surface);font-size:13px;font-weight:500;cursor:pointer;transition:all .15s ease}.reader-btn-action:hover,.reader-btn-action.active{background:var(--primary-fixed);color:var(--primary);border-color:var(--primary-container)}.reader-btn-icon,.reader-btn-close{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:var(--radius-md);border:none;background:transparent;color:var(--on-surface-variant);cursor:pointer;transition:all .15s ease}.reader-btn-icon:hover,.reader-btn-close:hover{background:var(--surface-container-high);color:var(--on-surface)}.epub-reader-content{flex:1;position:relative;overflow:hidden;background:var(--surface);display:flex;justify-content:center}.epub-reader-iframe{width:100%;height:100%;border:none;background:transparent;display:block}.reader-loading-box{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.75rem;height:100%;color:var(--on-surface-variant);font-size:14px}.reader-spinner{animation:spin 1s linear infinite;font-size:28px!important;color:var(--primary)}.reader-toc-backdrop{position:absolute;top:0;right:0;bottom:0;left:0;background:#1b1c1a59;z-index:20;backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(2px)}.reader-toc-drawer{position:absolute;top:0;right:0;bottom:0;width:340px;max-width:85vw;background:var(--surface-container-lowest);box-shadow:-4px 0 24px #0000001f;z-index:30;display:flex;flex-direction:column;animation:slideInRight .2s ease-out}@keyframes slideInRight{0%{transform:translate(100%)}to{transform:translate(0)}}.reader-toc-header{display:flex;align-items:center;justify-content:space-between;padding:.875rem 1rem;border-bottom:1px solid var(--surface-container-high)}.reader-toc-title{font-family:var(--font-headline);font-size:16px;font-weight:600;color:var(--on-surface)}.reader-toc-list{flex:1;overflow-y:auto;padding:.5rem;display:flex;flex-direction:column;gap:2px}.reader-toc-item{display:flex;align-items:center;gap:.625rem;width:100%;padding:.625rem .75rem;border-radius:var(--radius-md);border:none;background:transparent;text-align:left;cursor:pointer;transition:all .15s ease;color:var(--on-surface);font-size:13.5px;line-height:1.4}.reader-toc-item:hover{background:var(--surface-container-low)}.reader-toc-item.active{background:var(--primary-fixed);color:var(--primary);font-weight:600}.reader-toc-num{font-size:12px;color:var(--outline);min-width:22px;font-feature-settings:"tnum"}.reader-toc-item-title{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.reader-toc-active-icon{font-size:16px!important;color:var(--primary)}.epub-reader-mobile-footer{display:none;height:52px;align-items:center;justify-content:space-between;padding:0 1rem;background:#fbf9f5f5;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-top:1px solid var(--surface-container-high);z-index:10}.reader-mobile-nav-btn{display:inline-flex;align-items:center;gap:.25rem;height:36px;padding:0 .75rem;border-radius:var(--radius-md);border:1px solid var(--surface-container-high);background:var(--surface-container-lowest);color:var(--on-surface);font-size:13px;font-weight:500;cursor:pointer}.reader-mobile-nav-btn:disabled{opacity:.35;cursor:not-allowed}.reader-mobile-indicator{font-size:12px;color:var(--on-surface-variant);font-weight:500;max-width:140px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;text-align:center}@media(max-width:640px){.epub-reader-header-center,.reader-action-label{display:none}.epub-reader-mobile-footer{display:flex}.reader-book-title{max-width:130px}.reader-toc-drawer{width:100%;max-width:100%}}.chrome-requirement-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1050;display:flex;align-items:center;justify-content:center;padding:1rem}.chrome-requirement-backdrop{position:absolute;top:0;right:0;bottom:0;left:0;background:#1b1c1a73;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}.chrome-requirement-card{position:relative;z-index:10;width:100%;max-width:440px;background:var(--surface-container-lowest);border:1px solid var(--outline-variant);border-radius:var(--radius-xl);box-shadow:0 20px 40px -8px #00000029;padding:1.75rem 1.5rem;display:flex;flex-direction:column;align-items:center;text-align:center;animation:modalScaleIn .2s cubic-bezier(.16,1,.3,1)}@keyframes modalScaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.chrome-requirement-close-btn{position:absolute;top:1rem;right:1rem;display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:var(--radius-md);border:none;background:transparent;color:var(--on-surface-variant);cursor:pointer;transition:all .15s ease}.chrome-requirement-close-btn:hover{background:var(--surface-container-high);color:var(--on-surface)}.chrome-requirement-icon-box{width:52px;height:52px;border-radius:var(--radius-full);background:var(--primary-fixed);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:1rem}.chrome-requirement-title{font-family:var(--font-headline);font-size:1.25rem;font-weight:600;color:var(--on-surface);margin-bottom:.625rem;line-height:1.35}.chrome-requirement-desc{font-size:14.5px;line-height:1.6;color:var(--on-surface-variant);margin-bottom:1.5rem;padding:0 .5rem}.chrome-requirement-checkbox-row{display:inline-flex;align-items:center;gap:.5rem;cursor:pointer;-webkit-user-select:none;user-select:none;margin-bottom:1.25rem;font-size:13.5px;color:var(--on-surface-variant)}.chrome-requirement-checkbox{width:16px;height:16px;accent-color:var(--primary);cursor:pointer;border-radius:var(--radius-sm)}.chrome-requirement-checkbox-text{font-weight:500}.btn-chrome-understand{width:100%;height:44px;border-radius:var(--radius-md);border:none;background:var(--primary);color:var(--on-primary);font-family:var(--font-body);font-size:14px;font-weight:600;cursor:pointer;transition:all .15s ease;display:flex;align-items:center;justify-content:center}.btn-chrome-understand:hover{background:var(--primary-container)}