.button{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);font-weight:500;text-align:center;vertical-align:middle;touch-action:manipulation;cursor:pointer;-webkit-user-select:none;user-select:none;border:1px solid transparent;border-radius:var(--radius-md);transition:all var(--transition-fast);position:relative;overflow:hidden;white-space:nowrap}.button--small{padding:var(--spacing-xs) var(--spacing-md);font-size:.875rem}.button--medium{padding:var(--spacing-sm) var(--spacing-lg);font-size:1rem}.button--large{padding:var(--spacing-md) var(--spacing-xl);font-size:1.125rem}.button--primary{color:#fff;background-color:var(--color-primary);border-color:var(--color-primary)}.button--primary:hover:not(:disabled){background-color:var(--color-primary-dark);border-color:var(--color-primary-dark)}.button--secondary{color:var(--text-primary);background-color:transparent;border-color:var(--border-secondary)}.button--secondary:hover:not(:disabled){background-color:var(--bg-secondary)}.button--ghost{color:var(--text-secondary);background-color:transparent;border-color:transparent}.button--ghost:hover:not(:disabled){color:var(--text-primary);background-color:var(--bg-secondary)}.button--danger{color:#fff;background-color:var(--color-error);border-color:var(--color-error)}.button--danger:hover:not(:disabled){background-color:#dc2626;border-color:#dc2626}.button:disabled{opacity:.5;cursor:not-allowed}.button:active:not(:disabled){transform:translateY(1px)}.button--full-width{width:100%}.button--loading{color:transparent;pointer-events:none}.button__spinner{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:1rem;height:1rem;border:2px solid transparent;border-top-color:currentColor;border-radius:50%;animation:button-spin .6s linear infinite}.button__text--hidden{visibility:hidden}@keyframes button-spin{to{transform:translate(-50%,-50%) rotate(360deg)}}.button:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}@media (hover: none){.button:after{content:"";position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background-color:#ffffff4d;transform:translate(-50%,-50%);transition:width .6s,height .6s}.button:active:after{width:300px;height:300px}}.document-editor{border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface);overflow:hidden}.editor-toolbar{display:flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-md);border-bottom:1px solid var(--color-border);background:var(--color-background)}.editor-toolbar button{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border:1px solid transparent;border-radius:var(--radius-md);background:transparent;color:var(--color-text-secondary);font-size:14px;font-weight:600;cursor:pointer;transition:all .2s ease}.editor-toolbar button:hover{background:var(--color-surface-hover);color:var(--color-text)}.editor-toolbar button.active{background:var(--color-primary);color:#fff}.editor-toolbar button:disabled{opacity:.5;cursor:not-allowed}.toolbar-separator{width:1px;height:20px;background:var(--color-border);margin:0 var(--spacing-xs)}.editor-content{min-height:400px;max-height:600px;overflow-y:auto;padding:var(--spacing-lg)}.editor-content .ProseMirror{height:100%;outline:none}.editor-content .ProseMirror p.is-editor-empty:first-child:before{content:attr(data-placeholder);float:left;color:var(--color-text-tertiary);pointer-events:none;height:0}.editor-content .ProseMirror{font-family:var(--font-family-main);font-size:16px;line-height:1.8;color:var(--color-text)}.editor-content .ProseMirror h1{font-size:2em;font-weight:700;margin:1em 0 .5em;line-height:1.3}.editor-content .ProseMirror h2{font-size:1.5em;font-weight:600;margin:.8em 0 .4em;line-height:1.4}.editor-content .ProseMirror h3{font-size:1.2em;font-weight:600;margin:.6em 0 .3em;line-height:1.5}.editor-content .ProseMirror p{margin:0 0 1em}.editor-content .ProseMirror ul,.editor-content .ProseMirror ol{margin:0 0 1em;padding-left:2em}.editor-content .ProseMirror li{margin:.2em 0}.editor-content .ProseMirror blockquote{border-left:3px solid var(--color-primary);margin:1em 0;padding-left:1em;color:var(--color-text-secondary)}.editor-content .ProseMirror pre{background:var(--color-background);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-md);margin:1em 0;overflow-x:auto}.editor-content .ProseMirror code{background:var(--color-background);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:.2em .4em;font-family:var(--font-family-mono);font-size:.9em}.editor-content .ProseMirror pre code{background:none;border:none;padding:0}.document-editor.read-only .editor-content{background:var(--color-background)}.document-editor.read-only .editor-content .ProseMirror{cursor:default}@media (prefers-color-scheme: dark){.document-editor{background:var(--color-surface)}.editor-toolbar{background:var(--color-background)}}.create-document-page{min-height:100vh;padding:var(--spacing-xl) 0}.page-header{text-align:center;margin-bottom:var(--spacing-2xl)}.page-header h1{font-size:2rem;margin-bottom:var(--spacing-sm)}.page-description{color:var(--text-secondary);font-size:1.125rem}.document-form{max-width:800px;margin:0 auto}.editor-section{margin-bottom:var(--spacing-xl)}.section-label{display:block;font-weight:600;margin-bottom:var(--spacing-md);font-size:1.125rem}.password-section{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.form-group{display:flex;flex-direction:column}.form-group label{font-weight:500;margin-bottom:var(--spacing-sm);color:var(--text-primary)}.form-group input{padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--border-primary);border-radius:var(--radius-md);background-color:var(--bg-primary);font-size:1rem;transition:all var(--transition-fast)}.form-group input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #2563eb1a}.form-group input::placeholder{color:var(--text-tertiary)}.error-message{background-color:#fef2f2;color:#991b1b;padding:var(--spacing-md);border-radius:var(--radius-md);margin-bottom:var(--spacing-lg);border:1px solid #fee2e2}.form-actions{display:flex;justify-content:flex-end;gap:var(--spacing-md);margin-bottom:var(--spacing-2xl)}.tips{max-width:600px;margin:0 auto;background-color:var(--bg-secondary);padding:var(--spacing-lg);border-radius:var(--radius-lg);border:1px solid var(--border-primary)}.tips h3{font-size:1.125rem;margin-bottom:var(--spacing-md)}.tips ul{list-style:none;padding:0}.tips li{padding-left:1.5em;margin-bottom:var(--spacing-sm);position:relative;color:var(--text-secondary);line-height:1.6}.tips li:before{content:"•";position:absolute;left:.5em;color:var(--color-primary)}@media (max-width: 768px){.page-header h1{font-size:1.5rem}.page-description{font-size:1rem}.password-section{grid-template-columns:1fr}.form-actions{flex-direction:column-reverse}.form-actions button{width:100%}}.view-document-page{min-height:100vh;padding:var(--spacing-xl) 0}.password-form-container{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 4rem)}.password-form{background-color:var(--bg-primary);padding:var(--spacing-2xl);border-radius:var(--radius-xl);border:1px solid var(--border-primary);box-shadow:var(--shadow-lg);width:100%;max-width:400px}.password-form h1{font-size:1.5rem;text-align:center;margin-bottom:var(--spacing-sm)}.form-description{text-align:center;color:var(--text-secondary);margin-bottom:var(--spacing-xl)}.password-form .form-group{margin-bottom:var(--spacing-lg)}.password-form input{width:100%;padding:var(--spacing-md);font-size:1.125rem;border:1px solid var(--border-primary);border-radius:var(--radius-md);background-color:var(--bg-primary);transition:all var(--transition-fast)}.password-form input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #2563eb1a}.form-footer{text-align:center;margin-top:var(--spacing-lg)}.document-viewer{max-width:800px;margin:0 auto}.document-header{margin-bottom:var(--spacing-2xl);padding-bottom:var(--spacing-lg);border-bottom:1px solid var(--border-primary)}.document-header h1{font-size:2.5rem;margin-bottom:var(--spacing-md);word-break:break-word}.document-meta{display:flex;gap:var(--spacing-lg);color:var(--text-secondary);font-size:.875rem}.document-content-wrapper{margin-bottom:var(--spacing-2xl)}.document-actions{display:flex;justify-content:space-between;gap:var(--spacing-md);padding-top:var(--spacing-lg);border-top:1px solid var(--border-primary)}.error-page{text-align:center;padding:var(--spacing-2xl);min-height:calc(100vh - 4rem);display:flex;flex-direction:column;align-items:center;justify-content:center}.error-page h1{font-size:2rem;margin-bottom:var(--spacing-xl);color:var(--text-secondary)}.loading-container{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 4rem)}.loading-spinner{width:3rem;height:3rem;border:3px solid var(--border-primary);border-top-color:var(--color-primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 768px){.password-form{padding:var(--spacing-lg);margin:var(--spacing-md)}.document-header h1{font-size:1.75rem}.document-meta{flex-direction:column;gap:var(--spacing-sm)}.document-actions{flex-direction:column}.document-actions button{width:100%}}.home-page{min-height:100vh;padding:var(--spacing-2xl) 0}.hero{text-align:center;margin-bottom:var(--spacing-2xl)}.hero h1{font-size:3rem;font-weight:700;margin-bottom:var(--spacing-lg);background:linear-gradient(135deg,var(--color-primary) 0%,#6366f1 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-subtitle{font-size:1.25rem;color:var(--text-secondary);line-height:1.8}.cta-section{text-align:center;margin-bottom:var(--spacing-2xl)}.cta-description{margin-top:var(--spacing-md);color:var(--text-tertiary);font-size:.875rem}.features{margin-bottom:var(--spacing-2xl)}.features h2{text-align:center;margin-bottom:var(--spacing-xl)}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--spacing-lg)}.feature-card{background-color:var(--bg-secondary);padding:var(--spacing-lg);border-radius:var(--radius-lg);border:1px solid var(--border-primary);transition:all var(--transition-normal)}.feature-card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-md);transform:translateY(-2px)}.feature-card h3{font-size:1.25rem;margin-bottom:var(--spacing-sm)}.feature-card p{color:var(--text-secondary);line-height:1.6}.how-it-works{max-width:800px;margin:0 auto}.how-it-works h2{text-align:center;margin-bottom:var(--spacing-xl)}.steps{list-style:none;counter-reset:steps}.steps li{display:flex;align-items:flex-start;gap:var(--spacing-lg);margin-bottom:var(--spacing-xl);position:relative}.steps li:not(:last-child):after{content:"";position:absolute;left:25px;top:50px;width:2px;height:calc(100% + var(--spacing-lg));background-color:var(--border-primary)}.step-number{flex-shrink:0;width:50px;height:50px;background-color:var(--color-primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.25rem}.steps h4{margin-bottom:var(--spacing-xs)}.steps p{color:var(--text-secondary);line-height:1.6}@media (max-width: 768px){.hero h1{font-size:2rem}.hero-subtitle{font-size:1rem}.feature-grid{grid-template-columns:1fr}.steps li{gap:var(--spacing-md)}.step-number{width:40px;height:40px;font-size:1rem}.steps li:not(:last-child):after{left:20px;top:40px}}:root{--color-primary: #2563eb;--color-primary-dark: #1d4ed8;--color-secondary: #64748b;--color-success: #10b981;--color-warning: #f59e0b;--color-error: #ef4444;--bg-primary: #ffffff;--bg-secondary: #f8fafc;--bg-tertiary: #f1f5f9;--text-primary: #0f172a;--text-secondary: #475569;--text-tertiary: #64748b;--border-primary: #e2e8f0;--border-secondary: #cbd5e1;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--radius-sm: .25rem;--radius-md: .375rem;--radius-lg: .5rem;--radius-xl: .75rem;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1);--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .35s ease}@media (prefers-color-scheme: dark){:root{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #334155;--text-primary: #f8fafc;--text-secondary: #cbd5e1;--text-tertiary: #94a3b8;--border-primary: #334155;--border-secondary: #475569}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-text-size-adjust:100%;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{min-height:100vh;line-height:1.8;color:var(--text-primary);background-color:var(--bg-primary);font-feature-settings:"palt" 1,"pkna" 1;font-synthesis:none;text-rendering:optimizeLegibility}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.4;margin-bottom:var(--spacing-md)}h1{font-size:2.25rem}h2{font-size:1.875rem}h3{font-size:1.5rem}h4{font-size:1.25rem}h5{font-size:1.125rem}h6{font-size:1rem}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary-dark);text-decoration:underline}button{font-family:inherit;font-size:inherit;line-height:inherit;cursor:pointer;border:none;background:none}input,textarea,select{font-family:inherit;font-size:inherit;line-height:inherit;width:100%}ul,ol{list-style:none}img,picture,video,canvas,svg{display:block;max-width:100%;height:auto}table{border-collapse:collapse;border-spacing:0}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}::selection{background-color:var(--color-primary);color:#fff}::-webkit-scrollbar{width:12px;height:12px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-secondary);border-radius:6px}::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary)}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-lg)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}body{font-family:-apple-system-ja,Hiragino Kaku Gothic ProN,Hiragino Sans,Yu Gothic UI,Yu Gothic,Yu Gothic Medium,BIZ UDGothic,Meiryo,Noto Sans CJK JP,Source Han Sans JP,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}code,pre,kbd,samp{font-family:Consolas,Monaco,Andale Mono,Ubuntu Mono,monospace}@supports (-webkit-touch-callout: none){body{font-size:16px}}@media screen and (-ms-high-contrast: active),(-ms-high-contrast: none){body{font-weight:400}h1,h2,h3,h4,h5,h6{font-weight:500}}@media (-webkit-min-device-pixel-ratio: 2),(min-resolution: 192dpi){body{-webkit-font-smoothing:subpixel-antialiased}}.document-content{word-break:keep-all;line-break:strict;hanging-punctuation:allow-end;text-justify:inter-ideograph;letter-spacing:.05em;line-height:1.8}.document-content.formal{font-weight:400;letter-spacing:.08em;line-height:2}.document-content.technical{font-size:14px;line-height:1.7;letter-spacing:.02em;font-weight:300}.vertical-text{writing-mode:vertical-rl;text-orientation:upright;font-feature-settings:"vert" 1}.font-loading{visibility:hidden}.fonts-loaded{visibility:visible;animation:fadeIn .3s ease-in}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}