:root{--bg:#f8fafc;--surface:#fff;--surface2:#f1f5f9;--text:#0f172a;--muted:#64748b;--border:#e2e8f0;--primary:#4f46e5;--primary2:#4338ca;--soft:#eef2ff;--danger:#dc2626;--warning:#d97706;--success:#059669;--shadow:0 10px 30px rgba(15,23,42,.06)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);line-height:1.55}body.dark{--bg:#020617;--surface:#0f172a;--surface2:#1e293b;--text:#f8fafc;--muted:#94a3b8;--border:#263244;--soft:#1e1b4b;--shadow:0 10px 30px rgba(0,0,0,.25)}a{color:inherit;text-decoration:none}.container{width:min(1200px,calc(100% - 32px));margin:auto}.site-header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--surface) 90%,transparent);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}.header-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:9px;background:var(--primary);color:white;font-size:20px}.desktop-nav{display:flex;gap:26px;margin-left:auto}.desktop-nav a,.mobile-nav a{font-size:14px;font-weight:600;color:var(--muted)}.desktop-nav a:hover,.mobile-nav a:hover{color:var(--primary)}.header-actions{display:flex;align-items:center;gap:8px}.icon-btn{width:40px;height:40px;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--text);cursor:pointer;font-size:18px}.primary-btn,.secondary-btn,.ghost-btn,.danger-btn{border:0;border-radius:10px;padding:11px 17px;font-weight:700;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px}.primary-btn{background:var(--primary);color:#fff}.primary-btn:hover{background:var(--primary2)}.secondary-btn{background:var(--surface);border:1px solid var(--border);color:var(--text)}.ghost-btn{background:transparent;color:var(--muted)}.danger-btn{background:#fee2e2;color:#991b1b}.mobile-only,.mobile-nav{display:none}.hero{padding:84px 16px 92px;background:var(--surface);border-bottom:1px solid var(--border);text-align:center}.hero h1{font-size:clamp(38px,6vw,68px);line-height:1.05;letter-spacing:-.045em;margin:0 auto 22px;max-width:900px}.hero h1 span{color:var(--primary)}.hero p{font-size:19px;color:var(--muted);max-width:760px;margin:0 auto 32px}.hero-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}.section{padding:64px 0}.category{margin-bottom:62px;scroll-margin-top:90px}.category-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:22px}.category-icon{width:46px;height:46px;border-radius:12px;background:var(--soft);color:var(--primary);display:grid;place-items:center;font-size:22px}.category h2{margin:0 0 4px;font-size:26px}.category p{margin:0;color:var(--muted)}.tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.tool-card{min-height:160px;padding:20px;border:1px solid var(--border);border-radius:14px;background:var(--surface);box-shadow:0 2px 0 rgba(15,23,42,.01);display:flex;flex-direction:column;justify-content:space-between;transition:.18s}.tool-card:hover{transform:translateY(-2px);border-color:#a5b4fc;box-shadow:var(--shadow)}.tool-card h3{margin:0 0 8px;font-size:17px}.tool-card p{margin:0;color:var(--muted);font-size:14px}.arrow{align-self:flex-end;color:#94a3b8;font-size:20px}.trust{background:var(--soft);border-top:1px solid #c7d2fe;border-bottom:1px solid #c7d2fe;padding:70px 16px;text-align:center}.trust h2{font-size:34px;margin:0 0 14px}.trust p{max-width:780px;margin:auto;color:var(--muted);font-size:17px}.site-footer{border-top:1px solid var(--border);padding:58px 0 24px;background:var(--bg)}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}.footer-grid h3{font-size:15px;margin:0 0 12px}.footer-grid a{display:block;color:var(--muted);font-size:14px;margin:8px 0}.footer-grid a:hover{color:var(--primary)}.footer-brand{font-weight:800;font-size:20px;margin-bottom:10px}.footer-grid p,.footer-bottom{color:var(--muted);font-size:13px}.footer-bottom{border-top:1px solid var(--border);margin-top:35px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.tool-page{padding:45px 0 70px}.tool-top{margin-bottom:24px}.tool-top h1{font-size:clamp(32px,4vw,46px);margin:0 0 8px;letter-spacing:-.03em}.tool-top p{margin:0;color:var(--muted);font-size:17px}.workspace{display:grid;grid-template-columns:1fr 1fr;gap:18px}.workspace.analyzer,.workspace.grammar{grid-template-columns:minmax(0,2fr) minmax(280px,1fr)}.panel{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:18px;box-shadow:var(--shadow)}.panel-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;font-weight:750}.textarea{width:100%;min-height:360px;resize:vertical;border:1px solid var(--border);border-radius:12px;padding:16px;background:var(--surface);color:var(--text);font:inherit;line-height:1.65;outline:none}.textarea:focus{border-color:#818cf8;box-shadow:0 0 0 3px rgba(99,102,241,.12)}.tool-actions{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap;margin-top:10px}.action-group{display:flex;gap:8px;flex-wrap:wrap}.file-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 0}.file-input{display:none}.file-label{display:inline-flex;align-items:center;gap:8px;padding:9px 13px;border:1px dashed #a5b4fc;background:var(--soft);color:var(--primary);border-radius:9px;font-weight:700;cursor:pointer;font-size:14px}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.stat{background:var(--surface2);border-radius:10px;padding:14px;text-align:center}.stat strong{display:block;font-size:28px;color:var(--primary)}.stat span{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:800}.divider{height:1px;background:var(--border);margin:20px 0}.detail-list{display:grid;gap:9px}.detail{display:flex;justify-content:space-between;gap:15px;padding:10px 12px;background:var(--surface2);border-radius:9px;font-size:14px}.detail b{color:var(--text)}.issue-list{max-height:500px;overflow:auto}.issue{border:1px solid var(--border);background:var(--surface2);padding:12px;border-radius:10px;margin-bottom:10px}.badge{display:inline-block;font-size:11px;font-weight:800;padding:3px 8px;border-radius:99px;margin-bottom:6px}.badge.error{background:#fee2e2;color:#991b1b}.badge.warning{background:#fef3c7;color:#92400e}.badge.style{background:#dbeafe;color:#1d4ed8}.suggestion{margin-top:8px;background:none;border:0;padding:0;color:var(--primary);font-weight:750;cursor:pointer}.about-box{max-width:850px;margin-top:35px}.empty{color:var(--muted);text-align:center;padding:40px 10px}.search-box{width:min(520px,100%);margin:0 auto 30px;position:relative}.search-box input{width:100%;padding:13px 15px 13px 42px;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--text);outline:none}.search-icon{position:absolute;left:14px;top:10px;color:var(--muted)}.hidden{display:none!important}.note{color:var(--muted);font-size:12px;margin-top:8px}.file-status{font-size:13px;color:var(--muted)}
@media(max-width:1000px){.tool-grid{grid-template-columns:repeat(3,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:760px){.desktop-nav,.desktop-start{display:none}.mobile-only{display:block}.mobile-nav{border-top:1px solid var(--border);padding:14px 16px;display:flex;flex-direction:column;gap:8px;background:var(--surface)}.mobile-nav a{padding:9px}.tool-grid{grid-template-columns:repeat(2,1fr)}.workspace,.workspace.analyzer,.workspace.grammar{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.hero{padding:65px 16px}.hero p{font-size:17px}}@media(max-width:520px){.tool-grid,.footer-grid{grid-template-columns:1fr}.container{width:min(100% - 22px,1200px)}.hero h1{font-size:38px}.tool-page{padding-top:30px}.textarea{min-height:300px}}