:root{--color-primary:#024ad8;--color-primary-bright:#296ef9;--color-primary-deep:#0e3191;--color-primary-soft:#c9e0fc;--color-on-primary:#fff;--color-ink:#1a1a1a;--color-ink-deep:#000;--color-ink-soft:#292929;--color-on-ink:#fff;--color-canvas:#fff;--color-paper:#fff;--color-cloud:#f7f7f7;--color-fog:#e8e8e8;--color-steel:#c2c2c2;--color-graphite:#636363;--color-charcoal:#3d3d3d;--color-hairline:#e8e8e8;--color-hairline-strong:#c2c2c2;--color-bg-primary:var(--color-canvas);--color-bg-secondary:var(--color-paper);--color-bg-tertiary:var(--color-cloud);--color-bg-card:var(--color-paper);--color-bg-card-hover:var(--color-paper);--color-bg-dropzone:var(--color-cloud);--color-bg-dropzone-active:var(--color-primary-soft);--color-text-primary:var(--color-ink);--color-text-secondary:var(--color-charcoal);--color-text-muted:var(--color-graphite);--color-accent:var(--color-primary);--color-accent-hover:var(--color-primary-deep);--color-accent-light:var(--color-primary-soft);--color-accent-glow:#024ad81f;--color-success:#16a34a;--color-warning:#d97706;--color-error:#b3262b;--color-border:var(--color-hairline);--color-border-hover:var(--color-steel);--font-family:"Inter", 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1);--header-height:64px;--footer-height:80px;--max-width:1080px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--color-canvas);font-size:16px}body{font-family:var(--font-family);font-size:var(--font-size-base);line-height:var(--line-height-body);color:var(--color-ink);background-color:var(--color-canvas);min-height:100vh;overflow-x:hidden}a{color:var(--color-primary);transition:color var(--transition-fast);font-weight:var(--font-weight-medium);text-decoration:none}a:hover{color:var(--color-primary-deep);text-decoration:underline}button{cursor:pointer;border:none;outline:none;font-family:inherit}input,select{font-family:inherit}img{max-width:100%;display:block}#app{background-color:var(--color-canvas);flex-direction:column;min-height:100vh;display:flex}.main-content{width:100%;max-width:var(--max-width);padding:var(--space-xl) var(--space-md);padding-bottom:calc(var(--footer-height) + var(--space-2xl));flex:1;margin:0 auto}.visually-hidden{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.animate-fade-in{animation:fadeIn var(--transition-base) ease-out}.animate-slide-up{animation:slideUp var(--transition-slow) ease-out}.header{z-index:100;height:var(--header-height);padding:0 var(--space-xl);background:var(--color-canvas);border-bottom:1px solid var(--color-hairline);justify-content:space-between;align-items:center;display:flex;position:sticky;top:0}.header__logo{align-items:center;gap:var(--space-xs);cursor:pointer;transition:opacity var(--transition-fast);-webkit-user-select:none;user-select:none;display:flex}.header__logo:hover{opacity:.85}.header__logo-brand{color:var(--color-ink);letter-spacing:-.5px;font-size:1.4rem;font-weight:800}.header__logo-sub{color:var(--color-primary);letter-spacing:-.5px;font-size:1.4rem;font-weight:700}.header__badge{background:var(--color-primary-soft);color:var(--color-primary-deep);font-size:var(--font-size-xs);font-weight:var(--font-weight-medium);border-radius:var(--radius-lg);margin-left:var(--space-xs);align-items:center;gap:6px;padding:4px 10px;display:inline-flex}.svg-icon{vertical-align:-.15em;flex-shrink:0;width:1.2em;height:1.2em;display:inline-block}.nav-tabs{gap:var(--space-xs);padding:var(--space-xs) var(--space-lg);background:var(--color-canvas);border-bottom:1px solid var(--color-hairline);scrollbar-width:none;-ms-overflow-style:none;display:flex;overflow-x:auto}.nav-tabs::-webkit-scrollbar{display:none}.nav-tab{align-items:center;gap:var(--space-xs);background:var(--color-canvas);color:var(--color-ink);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);border-radius:var(--radius-pill);transition:all var(--transition-fast);white-space:nowrap;border:1px solid #0000;padding:8px 18px;display:inline-flex}.nav-tab:hover{background:var(--color-cloud);color:var(--color-ink-deep)}.nav-tab--active{background:var(--color-ink);color:var(--color-on-ink);font-weight:var(--font-weight-semibold)}.nav-tab--active .svg-icon{color:var(--color-primary-bright)}.btn{justify-content:center;align-items:center;gap:var(--space-xs);height:44px;font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);letter-spacing:.7px;text-transform:uppercase;border-radius:var(--radius-md);transition:all var(--transition-fast);white-space:nowrap;-webkit-user-select:none;user-select:none;box-sizing:border-box;border:1px solid #0000;padding:12px 24px;display:inline-flex}.btn:disabled{opacity:.6;cursor:not-allowed;pointer-events:none;background:var(--color-steel)!important;color:var(--color-on-primary)!important;border-color:#0000!important}.btn--sm{letter-spacing:.5px;height:36px;padding:6px 14px;font-size:12.6px}.btn--lg{height:48px;font-size:var(--font-size-base);letter-spacing:.8px;padding:14px 32px}.btn-primary{background:var(--color-primary);color:var(--color-on-primary);box-shadow:0 1px 3px #024ad833}.btn-primary:hover{background:var(--color-primary-bright)}.btn-primary:active{background:var(--color-primary-deep)}.btn-secondary,.btn-ink{background:var(--color-ink);color:var(--color-on-ink)}.btn-secondary:hover,.btn-ink:hover{background:var(--color-ink-soft)}.btn-outline{background:var(--color-canvas);color:var(--color-primary);border:1px solid var(--color-primary)}.btn-outline:hover{background:var(--color-primary-soft);color:var(--color-primary-deep)}.btn-outline-ink{background:var(--color-canvas);color:var(--color-ink);border:1px solid var(--color-ink)}.btn-outline-ink:hover{background:var(--color-cloud)}.btn-danger{color:var(--color-error);text-transform:uppercase;background:#fef2f2;border:1px solid #fecaca}.btn-danger:hover{background:#fee2e2}.btn-icon{border-radius:var(--radius-md);width:40px;height:40px;padding:0}.dropzone{min-height:240px;padding:var(--space-2xl) var(--space-xl);background:var(--color-cloud);border:2px dashed var(--color-steel);border-radius:var(--radius-xl);cursor:pointer;transition:all var(--transition-base);text-align:center;flex-direction:column;justify-content:center;align-items:center;display:flex;position:relative}.dropzone:hover{border-color:var(--color-primary);background:var(--color-canvas);box-shadow:var(--shadow-soft-lift)}.dropzone--active{border-color:var(--color-primary);background:var(--color-primary-soft);transform:scale(1.005)}.dropzone__icon-wrap{width:64px;height:64px;margin-bottom:var(--space-md);background:var(--color-canvas);border-radius:var(--radius-lg);color:var(--color-primary);border:1px solid var(--color-hairline);box-shadow:var(--shadow-sm);transition:transform var(--transition-base);justify-content:center;align-items:center;font-size:1.75rem;display:flex}.dropzone:hover .dropzone__icon-wrap{border-color:var(--color-primary-bright);transform:translateY(-2px)}.dropzone__title{font-size:var(--font-size-lg);font-weight:var(--font-weight-medium);color:var(--color-ink);margin-bottom:var(--space-xxs)}.dropzone__subtitle{font-size:var(--font-size-sm);color:var(--color-charcoal);margin-bottom:var(--space-md)}.dropzone__hint{font-size:var(--font-size-xs);color:var(--color-graphite)}.card{background:var(--color-canvas);border:1px solid var(--color-hairline);border-radius:var(--radius-xl);padding:var(--space-xl);box-shadow:var(--shadow-soft-lift);transition:all var(--transition-base)}.card--hoverable:hover{border-color:var(--color-steel);transform:translateY(-2px);box-shadow:0 4px 16px #1a1a1a1f}.action-bar{justify-content:space-between;align-items:center;gap:var(--space-md);padding:var(--space-md) var(--space-xl);background:var(--color-canvas);border:1px solid 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#024ad826}.form-input::placeholder{color:var(--color-graphite)}.toast-container{top:calc(var(--header-height) + 40px);right:var(--space-xl);z-index:1000;gap:var(--space-sm);pointer-events:none;flex-direction:column;max-width:380px;display:flex;position:fixed}.toast{pointer-events:auto;align-items:center;gap:var(--space-sm);background:var(--color-canvas);border:1px solid var(--color-hairline);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);font-size:var(--font-size-sm);color:var(--color-ink);padding:14px 18px;animation:.2s ease-out slideUp;display:flex}.toast--info{border-left:4px solid var(--color-primary)}.toast--success{border-left:4px solid var(--color-success)}.toast--error{border-left:4px solid var(--color-error)}.toast--warning{border-left:4px solid var(--color-warning)}.toast__icon{font-size:var(--font-size-lg);flex-shrink:0}.toast__message{flex:1}.toast__close{color:var(--color-graphite);font-size:var(--font-size-base);cursor:pointer;background:0 0;border:none;padding:2px}.toast__close:hover{color:var(--color-ink)}.progress-bar{background:var(--color-fog);border-radius:var(--radius-pill);width:100%;height:6px;overflow:hidden}.progress-bar__fill{background:var(--color-primary);border-radius:var(--radius-pill);height:100%;transition:width .2s}.badge{font-size:var(--font-size-xs);font-weight:var(--font-weight-medium);border-radius:var(--radius-lg);align-items:center;padding:4px 10px;display:inline-flex}.badge--accent{background:var(--color-primary-soft);color:var(--color-primary-deep)}.badge--muted{background:var(--color-cloud);color:var(--color-charcoal)}.status-bar{padding:var(--space-sm) var(--space-md);background:var(--color-canvas);border:1px solid var(--color-hairline);border-radius:var(--radius-md);font-size:var(--font-size-sm);color:var(--color-charcoal);justify-content:space-between;align-items:center;display:flex}.spinner{border:2px solid 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4px;font-size:1.5rem;line-height:1}.modal-card__close:hover{color:var(--color-ink)}.modal-card__body{padding:var(--space-xl);font-size:var(--font-size-sm);color:var(--color-charcoal);line-height:1.6;overflow-y:auto}.privacy-policy__date{font-size:var(--font-size-xs);color:var(--color-graphite);margin-bottom:var(--space-lg)}.privacy-policy section{margin-bottom:var(--space-lg)}.privacy-policy h2{font-size:var(--font-size-base);font-weight:var(--font-weight-bold);color:var(--color-ink);margin-bottom:var(--space-xs);border-bottom:1px solid var(--color-hairline);padding-bottom:4px}.privacy-policy p{margin-bottom:var(--space-xs)}.privacy-policy strong{color:var(--color-ink)}.privacy-policy a{color:var(--color-primary);text-decoration:underline}.privacy-policy a:hover{color:var(--color-primary-deep)}.home{text-align:center;animation:fadeIn var(--transition-slow) ease-out}.home__hero{padding:var(--space-2xl) var(--space-xl);margin-bottom:var(--space-2xl);background:var(--color-cloud);border:1px solid var(--color-hairline);border-radius:var(--radius-xl);position:relative;overflow:hidden}.home__hero:before{content:"";background:var(--color-primary);opacity:.85;pointer-events:none;width:50px;height:140%;position:absolute;top:-20px;left:-25px;transform:rotate(25deg)}.home__hero:after{content:"";background:var(--color-primary);opacity:.85;pointer-events:none;width:50px;height:140%;position:absolute;top:-20px;right:-25px;transform:rotate(25deg)}@media (width<=640px){.home__hero:before,.home__hero:after{display:none}}.home__title{font-size:var(--font-size-3xl);font-weight:var(--font-weight-medium);margin-bottom:var(--space-sm);color:var(--color-ink);letter-spacing:-.5px}.home__subtitle{font-size:var(--font-size-base);color:var(--color-charcoal);max-width:580px;margin:0 auto 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var(--color-error)!important;color:var(--color-error)!important;background:#fee2e2!important}.cut-line-btn__label{writing-mode:vertical-rl;letter-spacing:1px;font-size:10px;font-weight:700}.organize-page .thumbnail-grid{margin:var(--space-lg) 0}.unlock-page .password-section{gap:var(--space-md);margin:var(--space-lg) 0;flex-direction:column;max-width:400px;display:flex}.unlock-page .password-input-wrapper{position:relative}.unlock-page .password-toggle{right:var(--space-sm);padding:var(--space-xs);color:var(--color-graphite);cursor:pointer;font-size:var(--font-size-base);background:0 0;border:none;position:absolute;top:50%;transform:translateY(-50%)}.processing-overlay{justify-content:center;align-items:center;gap:var(--space-md);padding:var(--space-2xl);text-align:center;flex-direction:column;display:flex}.processing-overlay__text{font-size:var(--font-size-sm);color:var(--color-charcoal)}@media (width<=600px){.home__title{font-size:var(--font-size-2xl)}.tool-grid{gap:var(--space-sm);grid-template-columns:repeat(2,1fr)}.tool-card{padding:var(--space-lg) var(--space-sm)}.tool-card__icon{width:48px;height:48px;font-size:1.75rem}.thumbnail-grid{grid-template-columns:repeat(auto-fill,minmax(110px,1fr))}.page-header__title{font-size:var(--font-size-xl)}}@media (width>=768px){.tool-grid{grid-template-columns:repeat(2,1fr);max-width:760px}}.pagenum-workspace{gap:var(--space-lg);margin-top:var(--space-md);grid-template-columns:340px 1fr;align-items:start;display:grid}@media (width<=840px){.pagenum-workspace{grid-template-columns:1fr}}.pagenum-controls-card{gap:var(--space-md);flex-direction:column;display:flex}.pagenum-preview-card{background:var(--color-canvas);border:1px solid var(--color-hairline);border-radius:var(--radius-xl);padding:var(--space-md);box-shadow:var(--shadow-soft-lift);flex-direction:column;display:flex}.pagenum-preview__header{padding-bottom:var(--space-sm);margin-bottom:var(--space-sm);border-bottom:1px solid var(--color-hairline);justify-content:space-between;align-items:center;display:flex}.pagenum-preview__title{font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);color:var(--color-ink);align-items:center;gap:var(--space-xs);display:flex}.pagenum-preview__pagination{align-items:center;gap:var(--space-xs);display:flex}.pagenum-pagination__btn{background:var(--color-cloud);border:1px solid var(--color-hairline);border-radius:var(--radius-md);cursor:pointer;width:32px;height:32px;color:var(--color-ink);font-size:var(--font-size-sm);transition:all var(--transition-fast);justify-content:center;align-items:center;padding:0;display:inline-flex}.pagenum-pagination__btn:hover:not(:disabled){background:var(--color-primary);border-color:var(--color-primary);color:var(--color-on-primary)}.pagenum-pagination__btn:disabled{opacity:.4;cursor:not-allowed}.pagenum-pagination__text{font-size:var(--font-size-xs);font-weight:var(--font-weight-semibold);color:var(--color-charcoal);text-align:center;min-width:80px}.pagenum-preview__stage{background:var(--color-cloud);border-radius:var(--radius-lg);min-height:420px;padding:var(--space-md);justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.pagenum-preview__img-container{background:#fff;border-radius:4px;justify-content:center;align-items:center;max-width:100%;max-height:520px;display:flex;overflow:hidden;box-shadow:0 4px 16px #1a1a1a14}.pagenum-preview__img{object-fit:contain;max-width:100%;max-height:500px;display:block}.pagenum-preview__overlay{-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);justify-content:center;align-items:center;gap:var(--space-xs);color:var(--color-charcoal);font-size:var(--font-size-xs);z-index:10;transition:opacity var(--transition-fast);background:#fffc;flex-direction:column;display:flex;position:absolute;inset:0}.pagenum-preview__overlay.hidden{opacity:0;pointer-events:none}