/* White / blue workspace. Motion is limited to short, composited interactions. */
html { color-scheme: light; background: #fff; }
body { margin: 0; background: #fff; }
.nb { --bg:#fff; --surface:#fff; --card-bg:#fff; --surface-soft:#f5f8ff; --ink:#172b4d; --ink-2:#60718b; --ink-3:#8290a6; --text:#172b4d; --text-secondary:#60718b; --primary:#2468ed; --primary-hover:#1755cd; --primary-light:#eef4ff; --line:#e3eaf5; --border:#dfe7f3; --lavender:#2468ed; --grad-1:linear-gradient(125deg,#347bfa,#205ce0); --grad-2:linear-gradient(125deg,#347bfa,#205ce0); --shadow:0 4px 20px rgba(28,69,130,.04); --shadow-hover:0 12px 28px rgba(28,69,130,.1); background:#fff; min-height:100dvh; overflow-x:clip; }
.nb .nb-hero { width:90%; margin:0 auto; padding:40px 0 30px; display:flex; align-items:center; justify-content:space-between; gap:24px; text-align:left; }
.nb .brand { display:flex; align-items:center; gap:14px; }
.nb .brand-icon { display:grid; place-items:center; width:48px; height:48px; border-radius:14px; color:#fff; background:var(--grad-1); box-shadow:0 6px 16px #2468ed25; }
.nb svg { width:26px; height:26px; }
.nb .brand-icon { flex-shrink:0; }
.nb .brand-pdf-icon { width:42px; height:42px; overflow:visible; }
.nb .brand-pdf-page { transform-origin:13px 34px; animation:brand-page-turn 4.8s ease-in-out infinite; }
.nb .brand-pdf-spark { transform-origin:39px 9px; animation:brand-sparkle 4.8s ease-in-out infinite; }
@keyframes brand-page-turn {
  0%, 12%, 65%, 100% { transform:translateY(0) rotate(0deg); }
  30% { transform:translateY(-2px) rotate(-9deg); }
  46% { transform:translateY(-1px) rotate(3deg); }
}
@keyframes brand-sparkle {
  0%, 15%, 65%, 100% { transform:scale(.65); opacity:.45; }
  33%, 42% { transform:scale(1); opacity:1; }
}
.nb .nb-title { font-size:clamp(19px,2vw,28px); line-height:1.4; letter-spacing:0; color:var(--ink); font-weight:750; margin:0; text-shadow:none; }
.nb .tool-search { display:flex; align-items:center; gap:10px; width:300px; max-width:100%; padding:12px 16px; border:1px solid var(--border); background:#f7f9fd; border-radius:12px; color:#8393ac; transition:border-color .2s,box-shadow .2s; }
.nb .tool-search:focus-within { border-color:var(--primary); box-shadow:0 0 0 4px #2468ed12; }
.nb .tool-search svg { width:20px; height:20px; flex:none; }
.nb .tool-search input { width:100%; min-width:0; border:0; outline:0; background:transparent; font:inherit; font-size:14px; color:var(--ink); }
.nb .nb-filter { width:90%; margin:0 auto; padding:18px 0; gap:10px; justify-content:flex-start; background:#fff; border-top:1px solid var(--line); border-bottom:1px solid var(--line); backdrop-filter:none; }
.nb .nb-chip { border-radius:10px; padding:10px 16px; background:#fff; border-color:transparent; box-shadow:none; font-weight:550; }
.nb .nb-chip:hover { background:var(--primary-light); color:var(--primary); box-shadow:none; transform:translateY(-1px); }
.nb .nb-chip.nb-active { background:var(--primary); box-shadow:0 4px 10px #2468ed20; }
.nb .nb-dot { display:none; }
.nb .nb-chip .nb-count { background:#edf2fa; color:#687c9a; font-size:11px; padding:1px 6px; }
.nb .nb-main,.nb .nb-panels { width:90%; max-width:none; margin:0 auto; padding:28px 0 48px; }
.nb .nb-section { margin-bottom:32px; }
.nb .nb-cat-head { gap:12px; margin-bottom:16px; flex-wrap:nowrap; }
.nb .nb-cat-head:before { content:''; width:4px; height:18px; border-radius:4px; background:var(--primary); }
.nb .nb-cat-head h2 { font-size:17px; font-weight:650; }
.nb .nb-cat-count { margin-left:0; background:#f0f5ff!important; color:#6b82a9; box-shadow:none; padding:2px 8px; font-size:11px; }
.nb .nb-grid { grid-template-columns:repeat(6,minmax(0,1fr)); gap:14px; }
.nb .nb-card { min-width:0; min-height:166px; padding:20px 16px; gap:14px; flex-direction:column; align-items:flex-start; border:1px solid var(--line); border-radius:14px; box-shadow:none; background:#fff; flex-wrap:nowrap; }
.nb .nb-card.nb-visible:hover { transform:translateY(-3px); border-color:#a8c6fc; box-shadow:var(--shadow-hover); background:#fcfdff; }
.nb .nb-card:active { transform:scale(.985); }
.nb .nb-card-emoji,.nb .nb-panel-title .nb-card-emoji { width:46px; height:46px; border-radius:12px; background:#eef4ff; color:var(--primary); box-shadow:none; }
.nb .nb-card:hover .nb-card-emoji { transform:translateY(-2px) rotate(-6deg); }
.nb .nb-card-title { font-size:15px; padding-right:0; font-weight:650; }
.nb .nb-card-desc { font-size:12px; line-height:1.7; color:#8190a6; margin-top:7px!important; }
.nb .nb-card-foot { width:auto; align-self:flex-start; }
.nb .nb-btn-detail { display:block; background:none; color:#9fb3d1; border:0; box-shadow:none; font-size:20px; padding:0; transition:transform .2s,color .2s; }
.nb .nb-card:hover .nb-btn-detail { color:var(--primary); transform:translate(2px,-2px); }
.nb .nb-panel-head { margin:0 0 24px; }
.nb .nb-panel-body { max-width:none; }
.nb .nb-panel-title h2 { font-size:23px; }
.nb .nb-back-btn,.nb .btn { border-radius:10px; box-shadow:none; }
.nb .card { padding:28px; border-radius:16px; box-shadow:var(--shadow); }
.nb .split-layout { gap:28px; }
.nb .split-left,.nb .split-right { min-width:0; }
.nb .upload-area { border:1.5px dashed #aac5ee; border-radius:14px; background:#f8faff; padding:36px 20px; transition:background .2s,border-color .2s,transform .2s; }
.nb .upload-area:before { content:'↑'; display:grid; place-items:center; width:42px; height:42px; margin:0 auto 14px; color:var(--primary); border-radius:12px; background:#eaf2ff; font-size:28px; transition:transform .22s; }
.nb .upload-area:hover:before,.nb .upload-area.drag-over:before { transform:translateY(-5px); }
.nb .upload-area:hover,.nb .upload-area:focus-within { border-color:var(--primary); background:#eff5ff; }
.nb .btn-primary { background:var(--primary); box-shadow:0 3px 8px #2468ed20; }
.nb .btn-primary:hover:not(:disabled) { background:var(--primary-hover); filter:none; transform:translateY(-2px); }
.nb .btn:active:not(:disabled) { transform:scale(.97); }
.nb input,.nb select,.nb textarea { accent-color:var(--primary); max-width:100%; }
.nb :is(button,[role=button],input,select,textarea):focus-visible { outline:3px solid #83b0ff; outline-offset:3px; }
.nb .file-list { border-radius:12px; }
.nb .file-item { transition:background .18s; }
.nb .file-item:hover { background:#f5f8ff; }
.nb .progress-bar { background:var(--grad-1); }
.nb .usage-note { background:#f7f9fd; border-radius:10px; padding:12px 16px; font-size:12px; }
.nb .example-badge { background:#eef4ff; color:var(--primary); }
.nb .loading-overlay { background:#172b4d55; backdrop-filter:none; }
.nb .nb-ticker,.nb .nb-bg-grid,.nb .nb-footer,.nb .footer-note { display:none; }
.nb .tab-panel.active { animation:workspace-enter .24s ease-out; }
.nb .search-empty { text-align:center; padding:90px 20px; color:var(--ink-2); }
@keyframes workspace-enter { from { opacity:0; transform:translateY(6px); } to { opacity:1; transform:translateY(0); } }

@media(max-width:1200px) { .nb .nb-grid { grid-template-columns:repeat(3,minmax(0,1fr)); } }
@media(max-width:900px) { .nb .nb-grid { grid-template-columns:repeat(2,minmax(0,1fr)); } .nb .nb-filter { flex-wrap:nowrap; overflow-x:auto; } .nb .nb-chip { flex:none; } .nb .nb-hero { flex-wrap:wrap; padding-top:28px; } }
@media(max-width:560px) { .nb .nb-grid { grid-template-columns:1fr; } .nb .tool-search { width:100%; } .nb .nb-card { min-height:104px; } .nb .card { padding:16px; } .nb .split-layout { flex-direction:column; } .nb .split-left,.nb .split-right { width:100%; flex:auto!important; min-width:0!important; max-width:none!important; } .nb .nb-panel-title h2 { font-size:19px; } .nb .preview-panel,.nb .control-panel { min-width:0; max-width:100%; } }

/* Shared title, home-only search, and stable selected filter contrast. */
.nb .tool-search { display:none; }
.nb:has(#tab-home.active) .tool-search { display:flex; }
.nb .nb-chip.nb-active,
.nb .nb-chip.nb-active:hover,
.nb .nb-chip.nb-active:focus-visible { color:#fff; background:#2468ed; }
.nb .nb-chip.nb-active > span { color:inherit; }
.nb .nb-chip.nb-active .nb-count { background:#ffffff29; color:#fff; }
.nb .nb-card .nb-card-emoji { width:48px; height:48px; }
.nb .nb-card .nb-card-emoji svg { width:29px; height:29px; overflow:visible; }
.nb .nb-card:hover .nb-card-emoji { transform:none; }
.nb .nb-card .icon-motion { transform-box:fill-box; transform-origin:center; }
.nb .nb-card:is(:hover,:focus-visible) .icon-motion { animation:icon-lift 1.3s ease-in-out infinite; }
.nb .nb-card:is(:hover,:focus-visible) .motion-rotate .icon-motion { animation-name:icon-rotate; }
.nb .nb-card:is(:hover,:focus-visible) .motion-press .icon-motion { animation-name:icon-press; }
.nb .nb-card:is(:hover,:focus-visible) .motion-slide .icon-motion { animation-name:icon-slide; }
.nb .nb-card:is(:hover,:focus-visible) .motion-draw .icon-motion { animation-name:icon-draw; }
.nb .nb-card:is(:hover,:focus-visible) .motion-scan .icon-motion { animation-name:icon-scan; }
@keyframes icon-lift { 0%,100% { transform:translateY(0); } 50% { transform:translateY(-2px); } }
@keyframes icon-rotate { 0%,100% { transform:rotate(0); } 50% { transform:rotate(22deg); } }
@keyframes icon-press { 0%,100% { transform:translateY(-1px) scale(1); } 50% { transform:translateY(2px) scale(.94); } }
@keyframes icon-slide { 0%,100% { transform:translateX(-1px); } 50% { transform:translateX(2px); } }
@keyframes icon-draw { 0%,100% { transform:translate(0,0); opacity:1; } 50% { transform:translate(2px,-1px); opacity:.65; } }
@keyframes icon-scan { 0%,100% { transform:translateY(-3px); } 50% { transform:translateY(4px); } }

.nb #tab-word [hidden] { display:none!important; }
/* Six-column cards: icon on the left, content on the right. */
.nb .nb-card { flex-direction:row; align-items:center; flex-wrap:nowrap; min-height:124px; gap:12px; padding:18px 12px; }
.nb .nb-card .nb-card-body { min-width:0; text-align:left; }
.nb .nb-card .nb-card-title { font-size:14px; overflow-wrap:anywhere; }
.nb .nb-card .nb-card-desc { font-size:11px; overflow-wrap:anywhere; }
.nb .nb-card .nb-card-emoji { width:48px; height:54px; flex:none; background:#f0f5ff; border-radius:14px; }
.nb .nb-card-emoji:has([data-icon="word"], [data-icon="filter"], [data-icon="convert"], [data-icon="img2pdf"], [data-icon="flatten"], [data-icon="extract-images"], [data-icon="blueprint"], [data-icon="scan-effect"]) { background:#f4efff; }
.nb .nb-card-emoji:has([data-icon="stamp"], [data-icon="perf-stamp"], [data-icon="mark"], [data-icon="pagenum"], [data-icon="bates"], [data-icon^="watermark"]) { background:#fff1f1; }
.nb .nb-card-emoji:has([data-icon="meta"], [data-icon="unlock"], [data-icon="compress"], [data-icon="remove-bookmarks"]) { background:#eaf8f4; }
.nb .nb-card .nb-card-emoji svg { width:34px; height:34px; }
.nb .expressive-icon .icon-accent { stroke:var(--icon-accent); }
.nb .expressive-icon .icon-paper { stroke:var(--icon-ink); fill:var(--icon-tint); opacity:.45; }
.nb .expressive-icon .icon-pivot { fill:var(--icon-ink); stroke:#fff; stroke-width:.6; }
.nb .expressive-icon .tool-icon-part { transform-box:view-box; transform-origin:12px 12px; }
.nb .nb-card:is(:hover,:focus-visible) .tool-icon-part { animation:var(--part-motion) 1.8s cubic-bezier(.4,0,.2,1) infinite; }
.nb .nb-card:is(:hover,:focus-visible) [data-icon="crop-margin"] .tool-icon-part,
.nb .nb-card:is(:hover,:focus-visible) [data-icon="split"] .tool-icon-part { animation-duration:1.2s; transform-origin:12px 11.5px; }
@keyframes scissor-a { 0%,100% { transform:rotate(-12deg); } 50% { transform:rotate(24deg); } }
@keyframes scissor-b { 0%,100% { transform:rotate(12deg); } 50% { transform:rotate(-24deg); } }
@keyframes merge-left { 0%,100% { transform:translateX(0); } 50%,70% { transform:translateX(5px); } }
@keyframes merge-right { 0%,100% { transform:translateX(0); } 50%,70% { transform:translateX(-5px); opacity:.55; } }
@keyframes feed-left { 0%,60%,100% { transform:translateX(0); } 30% { transform:translateX(4px); } }
@keyframes feed-right { 0%,30%,100% { transform:translateX(0); } 65% { transform:translateX(-4px); } }
@keyframes bookmark-out { 0%,100% { transform:translateY(0); } 55% { transform:translateY(-4px); } }
@keyframes explode-left { 0%,100% { transform:translate(0); } 60% { transform:translate(-4px,1px) rotate(-10deg); } }
@keyframes explode-right { 0%,100% { transform:translate(0); } 60% { transform:translate(4px,1px) rotate(10deg); } }
@keyframes reorder-a { 0%,100% { transform:translate(0); } 25% { transform:translate(6px,-3px); } 50%,70% { transform:translate(12px,0); } }
@keyframes reorder-b { 0%,100% { transform:translate(0); } 25% { transform:translate(-6px,3px); } 50%,70% { transform:translate(-12px,0); } }
@keyframes reverse-top { 0%,100% { transform:translateY(0); } 55%,75% { transform:translateY(10px); } }
@keyframes reverse-bottom { 0%,100% { transform:translateY(0); } 55%,75% { transform:translateY(-10px); } }
@keyframes page-add { 0%,100% { transform:translate(3px,3px); opacity:.3; } 45%,75% { transform:translate(0); opacity:1; } }
@keyframes bin-lid { 0%,100% { transform:translateY(0) rotate(0); } 40%,70% { transform:translateY(-3px) rotate(-16deg); } }
@keyframes page-turn { 0%,100% { transform:rotate(0); } 50%,70% { transform:rotate(90deg); } }
@keyframes quarter-turn { 0%,100% { transform:rotate(0); } 50%,70% { transform:rotate(-90deg); } }
@keyframes tiles-a { 0%,100% { transform:scale(.7); opacity:.4; } 40%,75% { transform:scale(1); opacity:1; } }
@keyframes tiles-b { 0%,20%,100% { transform:scale(.7); opacity:.4; } 60%,80% { transform:scale(1); opacity:1; } }
@keyframes page-resize { 0%,100% { transform:scale(.75,1); } 50%,70% { transform:scale(1.2,1.2); } }
@keyframes book-left { 0%,100% { transform:translateX(0); } 55% { transform:translateX(-2px) rotate(-6deg); } }
@keyframes book-right { 0%,100% { transform:translateX(0); } 55% { transform:translateX(2px) rotate(6deg); } }
@keyframes straighten { 0%,100% { transform:rotate(-15deg); } 45%,80% { transform:rotate(0); } }
@keyframes new-page { 0%,100% { transform:scale(.7); opacity:.3; } 50%,70% { transform:scale(1); opacity:1; } }
@keyframes flatten-top { 0%,100% { transform:translateY(0); } 50%,70% { transform:translateY(11px); } }
@keyframes flatten-middle { 0%,100% { transform:translateY(0); } 50%,70% { transform:translateY(5px); } }
@keyframes image-out { 0%,100% { transform:translate(0); } 50%,70% { transform:translate(2px,-4px); } }
@keyframes slider-right { 0%,100% { transform:translateX(0); } 50% { transform:translateX(6px); } }
@keyframes slider-left { 0%,100% { transform:translateX(0); } 50% { transform:translateX(-6px); } }
@keyframes scanner { 0%,100% { transform:translateY(0); } 60% { transform:translateY(13px); } }
@keyframes stamp-down { 0%,100% { transform:translateY(-3px) rotate(-8deg); } 45%,60% { transform:translateY(3px); } 75% { transform:translateY(-3px); } }
@keyframes stamp-print { 0%,30%,100% { opacity:0; transform:scaleX(.6); } 50%,85% { opacity:1; transform:scaleX(1); } }
@keyframes watermark { 0%,100% { opacity:.25; transform:scale(.85); } 55%,75% { opacity:1; transform:scale(1); } }
@keyframes write-pen { 0%,100% { transform:translate(-2px,1px); } 30% { transform:translate(0,-1px); } 60% { transform:translate(3px,1px); } }
@keyframes compress-page { 0%,100% { transform:scale(1); } 50%,75% { transform:scale(.65); } }
@keyframes unlock-shackle { 0%,100% { transform:translate(0); } 50%,75% { transform:translateY(-3px) rotate(-25deg); } }
@keyframes draft-lines { 0%,100% { opacity:.2; transform:scale(.5); } 65%,80% { opacity:1; transform:scale(1); } }
@keyframes number-print { 0%,100% { opacity:.2; transform:translateY(-2px); } 50%,80% { opacity:1; transform:translateY(0); } }
@keyframes number-feed { 0%,100% { transform:translateY(0); } 50% { transform:translateY(-3px); } }
@keyframes seal-fan { 0%,100% { transform:rotate(-20deg); } 50% { transform:rotate(20deg); } }
@keyframes info-reveal { 0%,100% { opacity:.35; transform:scale(.85); } 50% { opacity:1; transform:scale(1.05); } }
@keyframes bookmark-remove { 0%,100% { opacity:1; transform:translate(0); } 60%,80% { opacity:0; transform:translate(3px,-4px); } }


/* Related tools have shared silhouettes and distinct task-specific motion. */
.nb .expressive-icon [style="--part-motion:fan-left"],
.nb .expressive-icon [style="--part-motion:fan-right"] { transform-origin:12px 21px; }
.nb .expressive-icon [style="--part-motion:fan-left"] { transform:rotate(-26deg); }
.nb .expressive-icon [style="--part-motion:fan-right"] { transform:rotate(26deg); }
.nb .expressive-icon [style="--part-motion:rotate-stack"],
.nb .expressive-icon [style="--part-motion:rotate-sheet"] { transform-origin:12px 14px; }
@keyframes trim-margins { 0%,100% { transform:scale(1); } 50%,75% { transform:scale(.65); } }
@keyframes convert-to-image { 0%,100% { transform:translateY(0); opacity:.55; } 55% { transform:translateY(2px); opacity:1; } }
@keyframes convert-to-pdf { 0%,100% { transform:translateY(0); opacity:.55; } 55% { transform:translateY(-2px); opacity:1; } }
@keyframes rotate-stack { 0%,100% { transform:rotate(0); } 50%,75% { transform:rotate(90deg); } }
@keyframes rotate-sheet { 0%,100% { transform:rotate(0); } 50%,75% { transform:rotate(90deg); } }
@keyframes fan-left { 0%,100% { transform:rotate(-26deg); } 45%,75% { transform:rotate(-38deg); } }
@keyframes fan-right { 0%,100% { transform:rotate(26deg); } 45%,75% { transform:rotate(38deg); } }
@keyframes fan-seal { 0%,100% { opacity:.55; transform:scale(.92); } 55%,80% { opacity:1; transform:scale(1); } }

@media(prefers-reduced-motion:reduce) { .nb *, .nb *:before, .nb *:after { animation:none!important; transition:none!important; scroll-behavior:auto!important; } .nb .nb-card { opacity:1; transform:none; } }