:root{--bg:#f7f9fc;--surface:#fff;--surface2:#eef4fb;--text:#0b1220;--muted:#5d6b7e;--line:#dbe4ef;--primary:#2563eb;--primary2:#1d4ed8;--teal:#0f9f8f;--success:#0f9f6e;--warning:#b7791f;--danger:#c2414a;--shadow:0 18px 50px rgba(22,34,58,.08);--radius:20px;--radius-sm:12px;--max:1180px}html[data-theme=dark]{--bg:#09111f;--surface:#0f1a2c;--surface2:#14233b;--text:#edf4ff;--muted:#a7b6c9;--line:#253650;--primary:#60a5fa;--primary2:#93c5fd;--teal:#2dd4bf;--shadow:0 18px 50px rgba(0,0,0,.24)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button{cursor:pointer}.container{width:min(var(--max),calc(100% - 32px));margin-inline:auto}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:16px;top:16px;z-index:1000;background:var(--surface);padding:10px 14px;border-radius:8px}.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.header-inner{height:72px;display:flex;align-items:center;gap:24px}.brand{display:flex;align-items:center;gap:10px;font-weight:850;letter-spacing:-.02em;font-size:19px}.brand-mark{display:grid;place-items:center;width:35px;height:35px;border-radius:11px;background:linear-gradient(135deg,var(--primary),var(--teal));color:#fff;font-size:12px;box-shadow:0 7px 18px rgba(37,99,235,.22)}.desktop-nav{display:flex;gap:22px;margin-left:auto}.desktop-nav a{font-size:14px;font-weight:650;color:var(--muted)}.desktop-nav a:hover{color:var(--text)}.header-actions{display:flex;align-items:center;gap:8px}.icon-btn,.menu-toggle{border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:11px;min-height:40px;padding:0 12px}.search-trigger{display:flex;align-items:center;gap:7px;color:var(--muted)}kbd{border:1px solid var(--line);border-radius:6px;padding:1px 5px;font-size:11px;background:var(--bg)}.menu-toggle{display:none}.mobile-nav{display:none;padding:12px 16px 18px;grid-template-columns:repeat(2,1fr);gap:8px;background:var(--surface)}.mobile-nav.open{display:grid}.mobile-nav a{padding:10px 12px;border:1px solid var(--line);border-radius:10px}.hero{padding:82px 0 54px}.hero-grid{display:grid;grid-template-columns:1.22fr .78fr;gap:54px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:750;color:var(--primary);background:color-mix(in srgb,var(--primary) 9%,var(--surface));border:1px solid color-mix(in srgb,var(--primary) 22%,var(--line));padding:7px 11px;border-radius:999px}.hero h1,.page-hero h1,.tool-title h1,.article-head h1{font-size:clamp(38px,5vw,68px);line-height:1.04;letter-spacing:-.055em;margin:18px 0}.hero p,.page-hero p,.tool-title p,.article-head p{color:var(--muted);font-size:18px;max-width:760px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:12px;padding:12px 17px;font-weight:750}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary2)}.btn-secondary{background:var(--surface);border:1px solid var(--line)}.hero-card{background:var(--surface);border:1px solid var(--line);border-radius:28px;padding:18px;box-shadow:var(--shadow);transform:rotate(1deg)}.mini-tool{padding:18px;border-radius:18px;background:var(--bg);margin-bottom:12px}.mini-tool:last-child{margin-bottom:0}.mini-tool span{display:block;color:var(--muted);font-size:13px}.mini-tool strong{display:block;margin-top:2px}.trust-row{display:flex;gap:24px;flex-wrap:wrap;margin-top:34px;color:var(--muted);font-size:13px}.section{padding:58px 0}.section.alt{background:var(--surface);border-block:1px solid var(--line)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:25px}.section-head h2{font-size:32px;line-height:1.15;letter-spacing:-.035em;margin:0}.section-head p{color:var(--muted);max-width:600px;margin:7px 0 0}.text-link{color:var(--primary);font-weight:700}.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.tool-card{display:grid;grid-template-columns:auto 1fr auto;align-items:start;gap:13px;padding:19px;border:1px solid var(--line);border-radius:16px;background:var(--surface);transition:.2s ease}.tool-card:hover{transform:translateY(-2px);border-color:color-mix(in srgb,var(--primary) 35%,var(--line));box-shadow:0 14px 32px rgba(22,34,58,.06)}.tool-card__icon{width:38px;height:38px;display:grid;place-items:center;background:var(--surface2);border-radius:10px;font-weight:850;color:var(--primary);font-size:13px}.tool-card strong,.tool-card small{display:block}.tool-card small{color:var(--muted);line-height:1.5;margin-top:4px}.arrow{color:var(--muted)}.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.category-card{padding:24px;border:1px solid var(--line);border-radius:18px;background:var(--surface)}.category-card .tool-card__icon{margin-bottom:18px}.category-card h3{margin:0 0 7px;font-size:21px}.category-card p{color:var(--muted);margin:0 0 16px}.category-card a{color:var(--primary);font-weight:700}.page-hero{padding:64px 0 38px}.page-hero h1{font-size:clamp(36px,4vw,56px);max-width:800px}.crumbs{display:flex;gap:7px;align-items:center;color:var(--muted);font-size:13px;flex-wrap:wrap}.crumbs a:hover{color:var(--primary)}.tool-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:28px;padding:26px 0 68px}.tool-main{min-width:0}.tool-title{margin-bottom:20px}.tool-title h1{font-size:clamp(34px,4vw,50px);margin:13px 0 12px}.tool-panel{border:1px solid var(--line);background:var(--surface);border-radius:24px;padding:24px;box-shadow:var(--shadow)}.tool-panel h2{font-size:22px;margin:0 0 6px}.tool-panel .lead{color:var(--muted);margin:0 0 22px}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}.field label{font-weight:700;font-size:14px}.field small,.helper{color:var(--muted);font-size:13px}.field input,.field textarea,.field select{width:100%;border:1px solid var(--line);background:var(--bg);color:var(--text);border-radius:11px;padding:11px 12px;outline:none}.field textarea{min-height:130px;resize:vertical}.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 12%,transparent)}.tool-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.result-box{margin-top:20px;padding:18px;border:1px solid var(--line);background:var(--bg);border-radius:15px;overflow:auto}.result-box[hidden]{display:none}.result-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.metric{padding:14px;background:var(--surface);border:1px solid var(--line);border-radius:12px}.metric span{display:block;color:var(--muted);font-size:12px}.metric strong{display:block;font-size:22px;margin-top:3px}.notice{padding:14px 16px;border-radius:12px;border:1px solid color-mix(in srgb,var(--primary) 20%,var(--line));background:color-mix(in srgb,var(--primary) 7%,var(--surface));font-size:14px;color:var(--muted);margin:16px 0}.notice strong{color:var(--text)}.tool-content{margin-top:34px}.tool-content h2{font-size:28px;line-height:1.2;letter-spacing:-.025em;margin:42px 0 12px}.tool-content h3{font-size:20px;margin:28px 0 8px}.tool-content p,.tool-content li{color:var(--muted)}.tool-content ul,.tool-content ol{padding-left:21px}.tool-content code,.code-output{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.code-output{white-space:pre-wrap;word-break:break-word;font-size:13px}.faq-list{display:grid;gap:10px;margin-top:18px}.faq{border:1px solid var(--line);border-radius:13px;background:var(--surface)}.faq summary{font-weight:750;padding:15px 17px;cursor:pointer}.faq div{padding:0 17px 16px;color:var(--muted)}.sidebar{position:sticky;top:96px;align-self:start;display:grid;gap:14px}.side-card{border:1px solid var(--line);border-radius:16px;background:var(--surface);padding:18px}.side-card h2{font-size:16px;margin:0 0 12px}.side-link{display:block;padding:9px 0;border-top:1px solid var(--line);font-size:14px}.side-link:first-of-type{border-top:0}.side-link small{display:block;color:var(--muted)}.serp-preview{background:#fff;color:#202124;border-radius:12px;padding:18px;font-family:Arial,sans-serif}.serp-url{color:#202124;font-size:13px}.serp-title{color:#1a0dab;font-size:20px;line-height:1.3;margin:5px 0}.serp-desc{color:#4d5156;font-size:14px;line-height:1.55}.progress{height:6px;border-radius:999px;background:var(--line);overflow:hidden;margin-top:7px}.progress span{display:block;height:100%;background:var(--success);width:0}.counter-row{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-top:5px}.table-wrap{overflow:auto}.data-table{width:100%;border-collapse:collapse;min-width:560px}.data-table th,.data-table td{text-align:left;padding:10px;border-bottom:1px solid var(--line);font-size:13px}.data-table th{color:var(--muted)}.article-layout{display:grid;grid-template-columns:minmax(0,760px) 300px;justify-content:space-between;gap:50px;padding:44px 0 78px}.article-head{padding:54px 0 8px}.article-head h1{font-size:clamp(38px,5vw,62px);max-width:900px}.article-meta{display:flex;gap:14px;flex-wrap:wrap;color:var(--muted);font-size:14px}.article-body{font-size:17px}.article-body h2{font-size:30px;line-height:1.2;letter-spacing:-.03em;margin:50px 0 14px;scroll-margin-top:100px}.article-body h3{font-size:22px;margin-top:30px}.article-body p,.article-body li{color:color-mix(in srgb,var(--text) 80%,var(--muted))}.article-body a{color:var(--primary);text-decoration:underline}.toc{border:1px solid var(--line);background:var(--surface);border-radius:15px;padding:17px}.toc h2{font-size:15px;margin:0 0 8px}.toc a{display:block;color:var(--muted);padding:5px 0;font-size:13px}.author-box{margin-top:48px;padding:22px;border:1px solid var(--line);border-radius:18px;background:var(--surface)}.author-box strong{font-size:18px}.author-box p{margin-bottom:0;color:var(--muted)}.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.post-card{border:1px solid var(--line);border-radius:18px;background:var(--surface);padding:23px}.post-card .tag{font-size:12px;color:var(--primary);font-weight:800}.post-card h2,.post-card h3{font-size:21px;line-height:1.25;margin:10px 0}.post-card p{color:var(--muted);font-size:14px}.post-meta{color:var(--muted);font-size:12px}.search-modal{position:fixed;inset:0;z-index:100;background:rgba(4,10,20,.55);padding:10vh 16px}.search-panel{max-width:650px;margin:auto;background:var(--surface);border:1px solid var(--line);border-radius:19px;box-shadow:var(--shadow);overflow:hidden}.search-row{display:flex;gap:10px;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line)}.search-row input{flex:1;background:transparent;border:0;outline:0;color:var(--text);font-size:18px}.search-close{border:0;background:var(--bg);color:var(--muted);padding:6px 8px;border-radius:7px}.search-results{max-height:55vh;overflow:auto;padding:8px}.search-result{display:block;padding:11px 12px;border-radius:10px}.search-result:hover{background:var(--bg)}.search-result strong,.search-result small{display:block}.search-result small{color:var(--muted)}.empty{padding:24px;text-align:center;color:var(--muted)}.site-footer{border-top:1px solid var(--line);background:var(--surface);padding:54px 0 20px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:38px}.footer-grid p{color:var(--muted);max-width:330px}.footer-grid h2{font-size:14px;margin:0 0 10px}.footer-grid>div>a:not(.brand){display:block;color:var(--muted);padding:5px 0;font-size:14px}.footer-bottom{border-top:1px solid var(--line);margin-top:36px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:12px}.copy-toast{position:fixed;right:18px;bottom:18px;padding:10px 14px;background:var(--text);color:var(--bg);border-radius:10px;z-index:120;font-weight:700;font-size:13px}.danger{color:var(--danger)}.success{color:var(--success)}
@media(max-width:900px){.desktop-nav{display:none}.menu-toggle{display:block}.hero-grid,.tool-layout,.article-layout{grid-template-columns:1fr}.hero-card{transform:none}.sidebar{position:static}.tool-grid,.category-grid,.blog-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:620px){.container{width:min(100% - 22px,var(--max))}.header-inner{height:64px}.search-trigger span,.search-trigger kbd{display:none}.hero{padding:55px 0 35px}.hero h1{font-size:42px}.section{padding:42px 0}.tool-grid,.category-grid,.blog-grid,.form-grid,.result-grid,.footer-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.tool-panel{padding:17px;border-radius:18px}.tool-layout{padding-top:15px}.article-layout{padding-top:24px}.footer-bottom{flex-direction:column}.section-head{align-items:start;flex-direction:column}.tool-card{padding:15px}.page-hero{padding-top:44px}}