:root{--bg: #f6f7fb;--surface: #ffffff;--text: #1a1d29;--muted: #5b6275;--border: #e3e6ef;--brand: #0f6fde;--brand-dark: #0a57b0;--brand-soft: #e8f1fd;--ok: #12804a;--ok-soft: #e6f6ee;--err: #c62828;--err-soft: #fdecec;--radius: 14px;--shadow: 0 1px 2px rgba(20, 30, 60, .05), 0 4px 16px rgba(20, 30, 60, .05);--font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;color-scheme:light}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 var(--font)}img,canvas,video{max-width:100%}a{color:var(--brand)}a:hover{color:var(--brand-dark)}h1,h2,h3{line-height:1.25}h1{font-size:clamp(1.6rem,4vw,2.3rem);margin:0 0 .4rem}h2{font-size:1.35rem;margin:2rem 0 .75rem}h3{font-size:1.1rem}code{font-family:var(--mono);font-size:.92em;background:#eef0f6;padding:.1em .35em;border-radius:5px}.container{width:100%;max-width:1180px;margin:0 auto;padding:0 16px}.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.site-header{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}.header-inner{display:flex;align-items:center;gap:16px;height:64px}.logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:1.25rem;color:var(--text);text-decoration:none;white-space:nowrap}.logo svg{width:30px;height:30px}.logo span b{color:var(--brand)}.main-nav{display:flex;gap:4px}.main-nav a{color:var(--muted);text-decoration:none;font-weight:600;font-size:.93rem;padding:6px 10px;border-radius:8px;white-space:nowrap}.main-nav a:hover,.main-nav a[aria-current=page]{background:var(--brand-soft);color:var(--brand)}.header-search{margin-left:auto;flex:0 1 320px}.nav-toggle{display:none;background:none;border:1px solid var(--border);border-radius:8px;padding:6px 10px;font-size:1.1rem;cursor:pointer}@media(max-width:1020px){.main-nav{display:none;position:absolute;top:64px;left:0;right:0;background:var(--surface);border-bottom:1px solid var(--border);flex-direction:column;padding:8px 16px 16px}.main-nav.open{display:flex}.nav-toggle{display:block}}@media(max-width:560px){.logo span{display:none}.header-search{flex:1}}.search{position:relative}.search input{width:100%;font:inherit;font-size:.95rem;padding:9px 14px 9px 38px;border:1px solid var(--border);border-radius:10px;background:#f3f5fa url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' fill='none' stroke='%235b6275' stroke-width='2' viewBox='0 0 24 24'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='m20 20-3.5-3.5'/%3E%3C/svg%3E") no-repeat 12px center;outline:none}.search input:focus{border-color:var(--brand);background-color:#fff;box-shadow:0 0 0 3px var(--brand-soft)}.search.big input{font-size:1.1rem;padding:15px 18px 15px 46px;border-radius:14px;background-position:16px center;background-color:#fff;box-shadow:var(--shadow)}.search-results{position:absolute;left:0;right:0;top:calc(100% + 6px);background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:0 12px 32px #141e3c26;list-style:none;margin:0;padding:6px;max-height:420px;overflow:auto;z-index:60}.search-results a{display:flex;gap:10px;align-items:center;padding:8px 10px;border-radius:8px;text-decoration:none;color:var(--text)}.search-results a small{display:block;color:var(--muted);font-size:.8rem;line-height:1.3}.search-results li.active a,.search-results a:hover{background:var(--brand-soft)}.search-results .empty{padding:10px;color:var(--muted)}main{padding:24px 0 48px}.breadcrumbs{font-size:.85rem;color:var(--muted);margin-bottom:12px}.breadcrumbs ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:6px}.breadcrumbs li+li:before{content:"›";margin-right:6px}.breadcrumbs a{color:var(--muted);text-decoration:none}.breadcrumbs a:hover{color:var(--brand)}.tool-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;align-items:start}.tool-layout aside{position:sticky;top:84px}@media(max-width:1020px){.tool-layout{grid-template-columns:minmax(0,1fr)}.tool-layout aside{position:static}}.page-head{margin-bottom:16px}.page-head p{color:var(--muted);margin:0;font-size:1.05rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}.article{margin-top:28px}.article p,.article li{color:#2d3244}.article ol.steps{counter-reset:step;list-style:none;padding:0}.article ol.steps li{counter-increment:step;position:relative;padding:0 0 12px 44px}.article ol.steps li:before{content:counter(step);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;background:var(--brand-soft);color:var(--brand);font-weight:700;display:grid;place-items:center}.features{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;list-style:none;padding:0}.features li{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:10px 12px 10px 36px;position:relative}.features li:before{content:"✓";position:absolute;left:12px;color:var(--ok);font-weight:800}.faq details{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:12px 16px;margin-bottom:8px}.faq summary{font-weight:600;cursor:pointer}.faq details p{margin:8px 0 0}.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}.tool-card{display:flex;gap:12px;align-items:flex-start;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px;text-decoration:none;color:var(--text);transition:border-color .15s,transform .15s,box-shadow .15s}.tool-card:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow);color:var(--text)}.tool-card .icon{font-size:1.5rem;line-height:1;width:42px;height:42px;display:grid;place-items:center;background:var(--brand-soft);border-radius:10px;flex:none}.tool-card strong{display:block;font-size:.98rem}.tool-card small{display:block;color:var(--muted);font-size:.83rem;line-height:1.4}.related .tool-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}aside .tool-grid{grid-template-columns:1fr}aside h2{font-size:1rem;margin:18px 0 8px}.hero{text-align:center;padding:36px 0 24px}.hero h1{font-size:clamp(1.8rem,5vw,2.8rem)}.hero p{color:var(--muted);font-size:1.1rem;max-width:640px;margin:0 auto 22px}.hero .search{max-width:620px;margin:0 auto}.cat-section h2 a{color:var(--text);text-decoration:none}.cat-section h2 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h3{font-size:.95rem;color:var(--text);margin:0 0 8px}.site-footer ul{list-style:none;padding:0;margin:0}.site-footer li{margin:4px 0}.site-footer a{color:var(--muted);text-decoration:none}.site-footer a:hover{color:var(--brand)}.footer-bottom{border-top:1px solid var(--border);margin-top:24px;padding-top:16px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px}.prose{max-width:760px}.tool-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.tool-box>*+*{margin-top:14px}.dropzone{border:2px dashed #b9c6de;border-radius:var(--radius);background:#f8faff;padding:36px 16px;text-align:center;cursor:pointer;transition:border-color .15s,background .15s}.dropzone:hover,.dropzone.drag,.dropzone:focus-visible{border-color:var(--brand);background:var(--brand-soft);outline:none}.dropzone .dz-icon{font-size:2.2rem}.dropzone .dz-title{font-weight:700;font-size:1.1rem;margin:6px 0 2px}.dropzone .dz-hint{color:var(--muted);font-size:.88rem}.dropzone.compact{padding:14px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font:inherit;font-weight:600;font-size:.95rem;padding:10px 18px;border-radius:10px;border:1px solid var(--border);background:#fff;color:var(--text);cursor:pointer;text-decoration:none;transition:background .15s,border-color .15s}.btn:hover{border-color:var(--brand);color:var(--brand)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}.btn-primary:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff}.btn-lg{padding:13px 26px;font-size:1.05rem}.btn-sm{padding:5px 10px;font-size:.85rem;border-radius:8px}.row{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end}.row.center{justify-content:center;align-items:center}.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px}.field{display:flex;flex-direction:column;gap:4px;min-width:0}.field>label,.field>.label{font-size:.86rem;font-weight:600;color:var(--muted)}.field input:not([type=checkbox]):not([type=radio]):not([type=range]):not([type=color]),.field select,.tool-box textarea,.tool-box input[type=text],.tool-box input[type=number]{font:inherit;padding:9px 12px;border:1px solid var(--border);border-radius:10px;background:#fff;width:100%;min-width:0}.tool-box textarea{min-height:200px;resize:vertical;line-height:1.5}.tool-box textarea.code,.mono{font-family:var(--mono);font-size:.9rem}.field input:focus,.field select:focus,.tool-box textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}.check{display:inline-flex;align-items:center;gap:6px;font-size:.93rem;cursor:pointer}input[type=range]{width:100%;accent-color:var(--brand)}.segmented{display:inline-flex;border:1px solid var(--border);border-radius:10px;overflow:hidden;flex-wrap:wrap}.segmented button{font:inherit;font-size:.9rem;font-weight:600;border:0;background:#fff;padding:8px 14px;cursor:pointer;color:var(--muted)}.segmented button+button{border-left:1px solid var(--border)}.segmented button.active{background:var(--brand);color:#fff}.file-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.file-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:#fafbfe;font-size:.93rem}.file-item .name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}.file-item .meta{color:var(--muted);font-size:.85rem;white-space:nowrap}.file-item img,.file-item canvas{width:44px;height:44px;object-fit:cover;border-radius:6px;flex:none}.preview-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px}.preview-grid figure{margin:0;border:1px solid var(--border);border-radius:10px;padding:8px;background:#fafbfe;text-align:center;font-size:.82rem;color:var(--muted)}.preview-grid img,.preview-grid canvas{width:100%;height:auto;border-radius:6px;display:block;margin-bottom:6px;background:#fff}.result{border:1px solid #bfe3cf;background:var(--ok-soft);border-radius:var(--radius);padding:16px}.result-big{font-size:2rem;font-weight:800;color:var(--text);line-height:1.2;word-break:break-word}.stat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:10px}.stat{background:#f8faff;border:1px solid var(--border);border-radius:10px;padding:10px 12px}.stat b{display:block;font-size:1.5rem;line-height:1.2}.stat span{color:var(--muted);font-size:.82rem}.notice{border-radius:10px;padding:10px 14px;font-size:.93rem;background:var(--brand-soft);color:var(--brand-dark)}.notice.error{background:var(--err-soft);color:var(--err)}.notice.success{background:var(--ok-soft);color:var(--ok)}.muted{color:var(--muted);font-size:.9rem}.progress{height:8px;background:#e9edf5;border-radius:99px;overflow:hidden}.progress>div{height:100%;width:0;background:var(--brand);transition:width .2s}table.data{width:100%;border-collapse:collapse;font-size:.93rem;background:#fff}table.data th,table.data td{border:1px solid var(--border);padding:7px 10px;text-align:left}table.data th{background:#f3f5fa}.table-wrap{overflow-x:auto}.checker{background-image:linear-gradient(45deg,#e5e8ef 25%,transparent 25%),linear-gradient(-45deg,#e5e8ef 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#e5e8ef 75%),linear-gradient(-45deg,transparent 75%,#e5e8ef 75%);background-size:16px 16px;background-position:0 0,0 8px,8px -8px,-8px 0}[hidden]{display:none!important}