html,body{overflow-x:clip}.main{max-width:1240px;margin:0 auto;padding:2.6rem 24px 2rem}.main.alt{background:transparent;position:relative}body.dark .main.alt{background:transparent}.main.alt:before{content:"";position:absolute;inset:0 auto 0 50%;transform:translate(-50%);width:100vw;background:linear-gradient(180deg,#3b82f609,#8b5cf60b);pointer-events:none}body.dark .main.alt:before{background:#1e293b59}.main.alt>*{position:relative}.hero-section{text-align:center;padding:4.2rem 1rem 2.6rem;position:relative;overflow:hidden}.hero-section:before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse 42% 55% at 18% 8%,rgba(59,130,246,.16),transparent 70%),radial-gradient(ellipse 42% 55% at 82% 8%,rgba(139,92,246,.14),transparent 70%),radial-gradient(rgba(37,99,235,.07) 1px,transparent 1px);background-size:auto,auto,26px 26px;mask-image:linear-gradient(180deg,#000 55%,transparent 100%);-webkit-mask-image:linear-gradient(180deg,#000 55%,transparent 100%);pointer-events:none}.hero-container{max-width:880px;margin:0 auto;position:relative}.hero-in{animation:heroFadeInDown .8s both}@keyframes heroFadeInDown{0%{opacity:0;transform:translate3d(0,-22px,0)}to{opacity:1;transform:none}}@media(prefers-reduced-motion:reduce){.hero-in{animation:none}}#h1_title{font-size:2.7rem;letter-spacing:.3px}.hero-subtitle{font-size:16px;color:var(--color-text-sub);line-height:1.9;margin-top:1.1rem;max-width:700px;margin-left:auto;margin-right:auto}.hero-badges{display:flex;gap:.7rem;justify-content:center;flex-wrap:wrap;font-size:.9rem;padding:1.5rem .5rem 0}.badge{display:inline-flex;align-items:center;gap:7px;padding:.5rem 1.1rem;color:var(--color-text-main);background:var(--color-card-bg);border:1px solid rgba(203,213,225,.9);border-radius:40px;box-shadow:0 2px 10px -4px #0f172a1a;font-weight:600}.badge svg{width:15px;height:15px;color:var(--color-primary)}.badge.b-violet svg{color:var(--color-secondary)}.badge.b-green svg{color:#16a34a}.quick-nav{background:var(--color-card-bg);backdrop-filter:blur(8px);border-radius:60px;padding:.6rem 1rem;margin:2rem auto;max-width:fit-content;border:1px solid rgba(203,213,225,.9);box-shadow:var(--shadow-md)}.quick-nav ul{display:flex;gap:.4rem;list-style:none;flex-wrap:wrap;justify-content:center;font-size:1rem;margin:0;padding:0}.nav-link{padding:.55rem 1.2rem;border-radius:40px;font-weight:600;color:var(--color-primary);text-decoration:none;transition:var(--transition);display:block}.nav-link:hover{background:var(--color-gradient-strong);color:#fff;box-shadow:var(--shadow-sm);text-decoration:none}.tools-section{scroll-margin-top:90px}.section-header{text-align:left;padding:14px 0 26px;max-width:760px}.topic{font-size:1.7rem;font-weight:800;margin-bottom:.4rem}.topic span{display:inline-flex;align-items:center;background:none;border:none;padding:0;border-radius:0;color:var(--color-text-main)}.topic i{background:var(--color-gradient-strong);font-style:normal;width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;color:#fff;font-weight:800;margin-right:13px;font-size:1.05rem;box-shadow:0 6px 14px -4px #5e54f273;flex:0 0 auto}.section-desc{color:var(--color-text-sub);font-size:.98rem;margin:.35rem 0 0 51px;line-height:1.75}.itemCollection{display:grid;grid-template-columns:repeat(auto-fill,minmax(272px,1fr));gap:18px}.item{background:var(--color-card-bg);border-radius:16px;padding:22px 22px 18px;text-align:left;position:relative;cursor:pointer;transition:box-shadow var(--hover-time) ease,border-color var(--hover-time) ease;border:1px solid rgba(203,213,225,.85);box-shadow:0 1px 2px #0f172a0a;display:flex;flex-direction:column;overflow:hidden}.item:hover{border-color:#93aafff2;box-shadow:0 18px 36px -14px #2563eb40,0 4px 10px -4px #0f172a0f}.item-top{display:flex;align-items:center;gap:14px;margin-bottom:12px}.item-icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:#f1f5f9;flex:0 0 auto;transition:transform .5s cubic-bezier(.34,1.3,.64,1)}.item-icon img{width:34px;height:34px;display:block}.item:hover .item-icon{transform:scale(1.08) rotate(-3deg)}.item>.title{padding:0;font-size:1.08rem;font-weight:700;border-radius:0;color:var(--color-text-main);margin-bottom:0;line-height:1.45}.item>.title span{color:var(--color-text-sub);font-weight:600;font-size:.95rem;margin-left:2px}.item-desc{color:var(--color-text-sub);font-size:.86rem;line-height:1.7;margin:0 0 16px;flex:1 0 auto}.hot{position:absolute;top:14px;right:16px;background:linear-gradient(135deg,#fb7185,#ef4444);color:#fff;font-size:.68rem;font-weight:700;letter-spacing:.4px;padding:.26rem .7rem;border-radius:30px;z-index:2;box-shadow:0 3px 8px -2px #ef444473}.item[data-format=docx] .item-icon,.item[data-format=ocr-docx] .item-icon{background:#2563eb17}.item[data-format=xlsx] .item-icon,.item[data-format=ocr-xlsx] .item-icon{background:#0596691a}.item[data-format=pptx] .item-icon{background:#ea580c1a}.item[data-format=dwg] .item-icon{background:#0284c71a}.item[data-format=image] .item-icon,.item[data-format=img] .item-icon{background:#7c3aed17}.item[data-format=merge] .item-icon{background:#4f46e51a}.item[data-format=urltopdf] .item-icon{background:#0891b21a}.item[data-format=ofdconvert] .item-icon{background:#6366f11a}.item[data-format=split] .item-icon,.item[data-format=localSplit] .item-icon{background:#db277717}.item[data-format=sign] .item-icon{background:#0d94881a}.item[data-format=watermark] .item-icon{background:#2563eb17}.item[data-format=pagenumber] .item-icon{background:#4755691f}.item[data-format=lift] .item-icon{background:#16a34a1a}.item[data-format=encrypt] .item-icon{background:#d977061a}.item[data-format=repair] .item-icon{background:#4b55631f}.item[data-format=compress] .item-icon{background:#7c3aed17}.entry{margin-top:auto;width:100%}.entry a{display:inline-flex;align-items:center;gap:7px;padding:.5rem 1.3rem;background:transparent;color:var(--color-primary);border:1.5px solid rgba(37,99,235,.55);border-radius:40px;font-weight:600;font-size:.88rem;text-decoration:none;transition:var(--transition);min-width:0}.entry a .arr{width:14px;height:14px;transition:transform .5s ease}.entry a:hover{background:var(--color-gradient-strong);color:#fff;border-color:transparent;box-shadow:0 8px 18px -4px #5e54f280}.entry a:hover .arr{transform:translate(3px)}.friendly-links{padding:2rem 2rem 3rem;margin:1rem 0 0;text-align:center}.friendly-links h4{font-size:1.05rem;font-weight:700;margin-bottom:1.2rem;color:var(--color-text-main)}.links-container{display:flex;flex-wrap:wrap;gap:.8rem;justify-content:center}.link-item{padding:.45rem 1.1rem;background:var(--color-card-bg);border:1px solid rgba(203,213,225,.9);border-radius:40px;color:var(--color-text-sub);text-decoration:none;font-size:.9rem;transition:var(--transition)}.link-item:hover{background:var(--color-gradient-strong);border-color:transparent;color:#fff;text-decoration:none}body.dark .item{border-color:#2c3c58;box-shadow:none}body.dark .item:hover{border-color:#4f6ba8;box-shadow:0 18px 36px -14px #0000008c}body.dark .item-icon{background:#26344d}body.dark .item[data-format=docx] .item-icon,body.dark .item[data-format=ocr-docx] .item-icon{background:#2563eb38}body.dark .item[data-format=xlsx] .item-icon,body.dark .item[data-format=ocr-xlsx] .item-icon{background:#05966938}body.dark .item[data-format=pptx] .item-icon{background:#ea580c38}body.dark .item[data-format=dwg] .item-icon{background:#0284c738}body.dark .item[data-format=img] .item-icon{background:#7c3aed38}body.dark .item[data-format=merge] .item-icon{background:#4f46e53d}body.dark .item[data-format=urltopdf] .item-icon{background:#0891b238}body.dark .item[data-format=ofdconvert] .item-icon{background:#6366f13d}body.dark .item[data-format=localSplit] .item-icon{background:#db277733}body.dark .item[data-format=sign] .item-icon{background:#0d948838}body.dark .item[data-format=watermark] .item-icon{background:#2563eb38}body.dark .item[data-format=pagenumber] .item-icon{background:#47556959}body.dark .item[data-format=lift] .item-icon{background:#16a34a38}body.dark .item[data-format=encrypt] .item-icon{background:#d9770638}body.dark .item[data-format=repair] .item-icon{background:#4b556359}body.dark .item[data-format=compress] .item-icon{background:#7c3aed33}body.dark .badge{background:#1e293bcc;border-color:#334155;color:#e2e8f0}body.dark .topic span{background:none;border:none}body.dark .link-item{background:#1e293b;border-color:#334155}body.dark .entry a{border-color:#60a5fa99;color:#60a5fa}body.dark .entry a:hover{color:#fff;border-color:transparent}body.dark .quick-nav{background:#172133d9;border-color:#334155}html{scroll-behavior:smooth}a[name]{display:block;position:relative;top:-100px;visibility:hidden}@media(max-width:700px){#h1_title{font-size:1.75rem}.hero-subtitle{font-size:.95rem}.main{padding:1.6rem 16px 1.4rem}.topic{font-size:1.4rem}.topic i{width:32px;height:32px;margin-right:10px}.section-desc{margin-left:42px;font-size:.9rem}.itemCollection{grid-template-columns:1fr 1fr;gap:12px}.item{padding:16px 14px 14px}.item-icon{width:44px;height:44px;border-radius:12px}.item-icon img{width:29px;height:29px}.item>.title{font-size:.98rem}.item-desc{font-size:.8rem}}@media(max-width:480px){.itemCollection{grid-template-columns:1fr}.item-desc{display:none}}.item{animation:fadeInUp .5s ease-out backwards}.item:nth-child(1){animation-delay:.04s}.item:nth-child(2){animation-delay:.09s}.item:nth-child(3){animation-delay:.14s}.item:nth-child(4){animation-delay:.19s}.item:nth-child(5){animation-delay:.24s}.item:nth-child(6){animation-delay:.29s}.item:nth-child(7){animation-delay:.34s}.item:nth-child(8){animation-delay:.39s}.item:nth-child(9){animation-delay:.44s}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}