:root{--orange:#f97316;--orange-dark:#ea580c;--blue:#2563eb;--blue-light:#3b82f6;--navy:#0f1b2e;--navy-2:#15233a;--ink:#0f172a;--text:#1e293b;--muted:#64748b;--line:#e2e8f0;--bg:#f8fafc;--card:#fff;--good:#16a34a;--mono:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;--maxw:1140px}*{box-sizing:border-box}*,:before,:after{min-width:0}html,body{max-width:100%;overflow-x:hidden}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;margin:0;font:15px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}a{color:inherit;text-decoration:none}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}.site-main{min-height:60vh}.btn{letter-spacing:.4px;text-transform:uppercase;cursor:pointer;white-space:nowrap;border:1px solid #0000;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:13px 22px;font-size:13px;font-weight:700;transition:all .15s;display:inline-flex}.btn-sm{padding:9px 16px;font-size:12px}.btn-orange{background:var(--orange);color:#fff}.btn-orange:hover{background:var(--orange-dark)}.btn-blue{background:var(--blue);color:#fff}.btn-blue:hover{background:#1d4ed8}.btn-outline{color:#fff;background:0 0;border-color:#fff6}.btn-outline:hover{border-color:#fff}.btn-ghost{color:var(--text);border-color:var(--line);background:#fff}.btn-ghost:hover{border-color:var(--muted)}.topbar{border-bottom:1px solid var(--line);z-index:40;background:#fff;position:sticky;top:0}.topbar-inner{max-width:var(--maxw);align-items:center;gap:22px;margin:0 auto;padding:12px 22px;display:flex}.logo{align-items:center;gap:9px;font-size:18px;display:flex}.logo-mark{color:var(--ink);font-size:20px}.logo-text{color:var(--ink);font-weight:500}.logo-text strong{font-weight:800}.topnav{gap:22px;display:flex}.topnav-link{color:var(--muted);font-size:14px;font-weight:500}.topnav-link:hover{color:var(--ink)}.topbar-actions{align-items:center;gap:12px;margin-left:auto;display:flex}.search{background:var(--bg);border:1px solid var(--line);color:var(--muted);border-radius:8px;align-items:center;gap:8px;padding:7px 12px;display:flex}.search input{width:150px;color:var(--text);background:0 0;border:none;outline:none;font-size:13px}.icon-btn{color:var(--muted);cursor:pointer;background:0 0;border:none;padding:4px;display:flex}.icon-btn:hover{color:var(--ink)}.hero{background:var(--navy);color:#fff;text-align:center;padding:56px 22px 64px}.hero-inner{max-width:760px;margin:0 auto}.status-pill{color:#cbd5e1;background:#ffffff14;border:1px solid #ffffff24;border-radius:999px;align-items:center;gap:8px;margin-bottom:26px;padding:6px 14px;font-size:12px;font-weight:600;display:inline-flex}.status-pill .dot{background:#22c55e;border-radius:50%;width:7px;height:7px;box-shadow:0 0 8px #22c55e}.hero h1{letter-spacing:-.5px;margin:0 0 18px;font-size:42px;font-weight:800;line-height:1.12}.hero h1 .accent{color:var(--orange)}.hero p{color:#94a3b8;max-width:560px;margin:0 auto 30px;font-size:16px}.hero-cta{flex-wrap:wrap;justify-content:center;gap:14px;display:flex}.section{padding:44px 0}.section.alt{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}.section-head{justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:24px;display:flex}.section-head h2{letter-spacing:-.3px;margin:0 0 4px;font-size:26px}.section-head p{color:var(--muted);margin:0;font-size:14px}.section-head.center{text-align:center;flex-direction:column;align-items:center}.link-more{color:var(--blue);align-items:center;gap:6px;font-size:14px;font-weight:600;display:inline-flex}.tool-grid{grid-template-columns:2fr 1fr;gap:18px;display:grid}.tool-row{grid-template-columns:1fr 1.4fr;gap:18px;display:grid}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}.card.feature{align-items:flex-start;gap:18px;display:flex}.card .tool-ico{width:52px;height:52px;color:var(--blue);background:#eff6ff;border-radius:12px;flex:none;justify-content:center;align-items:center;display:flex}.card h3{margin:0 0 8px;font-size:18px}.card p{color:var(--muted);margin:0 0 14px;font-size:14px}.tags{flex-wrap:wrap;gap:8px;display:flex}.tag{text-transform:uppercase;letter-spacing:.4px;color:var(--muted);background:#f1f5f9;border-radius:6px;padding:4px 10px;font-size:11px;font-weight:700}.card.dark{background:var(--navy);color:#fff;border-color:#0000}.card.dark h3{color:#fff}.card.dark p{color:#94a3b8}.card-link{color:var(--orange);letter-spacing:.5px;text-transform:uppercase;font-size:12px;font-weight:700}.card-img{object-fit:cover;background:linear-gradient(135deg,#fb923c,#c2410c);border-radius:10px;flex:none;width:130px;height:100px}.corner-ico{color:var(--muted);margin-left:auto}.fw-table-wrap{border:1px solid var(--line);background:#fff;border-radius:12px;overflow:hidden}.fw-table{border-collapse:collapse;width:100%;font-size:14px}.fw-table thead th{background:var(--ink);color:#cbd5e1;text-align:left;text-transform:uppercase;letter-spacing:.5px;padding:14px 18px;font-size:12px;font-weight:600}.fw-table td{border-top:1px solid var(--line);padding:14px 18px}.fw-table tbody tr:nth-child(2n){background:var(--bg)}.fw-name{font-family:var(--mono);color:var(--ink);font-weight:600}.fw-ver{font-family:var(--mono);color:var(--muted)}.fw-dl{color:var(--blue);display:inline-flex}.fw-dl:hover{color:var(--orange)}.brand-tag{border-radius:6px;padding:3px 10px;font-size:12px;font-weight:700}.brand-syrotech{color:#c2410c;background:#fff7ed}.brand-netlink{color:#1d4ed8;background:#eff6ff}.brand-digisol{color:#047857;background:#ecfdf5}.brand-optilink{color:#6d28d9;background:#f5f3ff}.brand-genext{color:#b91c1c;background:#fef2f2}.center-btn{text-align:center;margin-top:22px}.community{grid-template-columns:1.6fr 1fr;gap:28px;display:grid}.forum-item{border:1px solid var(--line);background:#fff;border-radius:12px;margin-bottom:14px;padding:18px 20px}.forum-item h4{margin:0 0 6px;font-size:16px}.forum-item p{color:var(--muted);margin:0 0 12px;font-size:13.5px}.forum-meta{color:var(--muted);gap:16px;font-size:12.5px;display:flex}.f-badge{float:right;text-transform:uppercase;border-radius:6px;padding:3px 9px;font-size:11px;font-weight:700}.f-solved{color:var(--good);background:#ecfdf5}.f-article{color:var(--blue);background:#eff6ff}.f-hot{color:var(--orange-dark);background:#fff7ed}.news-item{gap:12px;margin-bottom:16px;display:flex}.news-thumb{background:linear-gradient(135deg,#334155,#0f172a);border-radius:8px;flex:none;width:64px;height:48px}.news-item h5{margin:0 0 3px;font-size:13.5px;line-height:1.35}.news-item time{color:var(--muted);font-size:12px}.promo{background:var(--orange);color:#fff;border-radius:12px;margin-top:22px;padding:22px}.promo h3{margin:0 0 8px}.promo p{color:#fff;opacity:.92;margin:0 0 16px;font-size:14px}.partners{text-align:center;padding:34px 0}.partners small{color:var(--muted);text-transform:uppercase;letter-spacing:1px;font-size:12px}.partner-logos{flex-wrap:wrap;justify-content:center;gap:40px;margin-top:18px;display:flex}.partner-logos span{color:#94a3b8;letter-spacing:.5px;font-size:22px;font-weight:800}.site-footer{background:var(--ink);color:#cbd5e1;padding:48px 22px 26px}.footer-grid{max-width:var(--maxw);grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;margin:0 auto;display:grid}.footer-brand .logo{margin-bottom:14px}.footer-brand .logo-mark,.footer-brand .logo-text{color:#fff}.footer-brand p{color:#94a3b8;max-width:300px;font-size:13px;line-height:1.7}.footer-col h4{color:#fff;text-transform:uppercase;letter-spacing:.6px;margin:0 0 14px;font-size:13px}.footer-col ul{margin:0;padding:0;list-style:none}.footer-col li{margin-bottom:9px}.footer-col a{color:#94a3b8;font-size:13.5px}.footer-col a:hover{color:#fff}.footer-bottom{max-width:var(--maxw);color:#64748b;border-top:1px solid #1e293b;justify-content:space-between;margin:32px auto 0;padding-top:18px;font-size:12.5px;display:flex}.status-dot{color:var(--good)}.page{padding:40px 0 70px}.page h1{margin:0 0 8px;font-size:30px}.page .lede{color:var(--muted);margin:0 0 28px;font-size:16px}.notice{color:#9a3412;background:#fff7ed;border:1px solid #fed7aa;border-radius:10px;margin:18px 0;padding:14px 18px;font-size:14px}.mobile-nav{display:none}@media (max-width:900px){.tool-grid,.tool-row,.community{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:26px}}@media (max-width:640px){.topnav,.search{display:none}.topbar-inner{gap:12px}.hero{padding:40px 18px 46px}.hero h1{font-size:30px}.hero p{font-size:15px}.section{padding:32px 0}.section-head{flex-direction:column;align-items:flex-start}.card.feature{flex-direction:column}.card-img{width:100%;height:150px}.fw-table thead{display:none}.fw-table,.fw-table tbody,.fw-table tr,.fw-table td{width:100%;display:block}.fw-table tr{border-top:1px solid var(--line);padding:10px 16px}.fw-table td{border:none;justify-content:space-between;padding:4px 0;display:flex}.fw-table td:before{content:attr(data-label);color:var(--muted);text-transform:uppercase;font-size:12px}.footer-grid{grid-template-columns:1fr 1fr}.footer-bottom{text-align:center;flex-direction:column;gap:8px}.partner-logos{gap:24px}.partner-logos span{font-size:17px}body{padding-bottom:70px}.mobile-nav{z-index:50;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-top:1px solid var(--line);padding:8px 6px calc(8px + env(safe-area-inset-bottom,0px));background:#fffffff5;display:flex;position:fixed;bottom:0;left:0;right:0}.mnav-item{color:var(--muted);border-radius:12px;flex-direction:column;flex:1;align-items:center;gap:3px;padding:6px 2px;display:flex}.mnav-label{font-size:11px;font-weight:600}.mnav-item.active{color:var(--orange)}}.fiber-tool{--ft-line:#e2e8f0}.fiber-tool .ft-tabs{flex-wrap:wrap;gap:8px;margin-bottom:18px;display:flex}.fiber-tool .ft-tab{color:var(--muted);border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:999px;padding:9px 16px;font-size:14px}.fiber-tool .ft-tab.active{background:var(--blue);color:#fff;border-color:#0000;font-weight:600}.fiber-tool .formula-card{background:var(--bg);border:1px solid var(--line);border-radius:12px;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px;padding:14px 16px;display:flex}.fiber-tool .formula-tag{letter-spacing:1.5px;color:var(--muted);text-transform:uppercase;font-size:12px;font-weight:700}.fiber-tool .formula-card code{font-family:var(--mono);color:var(--blue);background:#eff6ff;border-radius:7px;padding:4px 10px;font-size:14px}.fiber-tool .quick-row{flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:20px;display:flex}.fiber-tool .chip{border:1px solid var(--line);color:var(--muted);cursor:pointer;white-space:nowrap;background:#fff;border-radius:10px;padding:8px 14px;font-size:14px}.fiber-tool .chip.active{color:var(--blue);border-color:var(--blue);background:#eff6ff;font-weight:600}.fiber-tool .section-label{letter-spacing:1.2px;color:var(--muted);text-transform:uppercase;align-items:center;gap:7px;font-size:12px;font-weight:700;display:flex}.fiber-tool .grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;display:grid}.fiber-tool .grid.two{grid-template-columns:1fr 1fr}.fiber-tool .field{flex-direction:column;gap:9px;display:flex}.fiber-tool .field-hint{background:var(--bg);border:1px solid var(--line);cursor:help;border-radius:50%;justify-content:center;align-items:center;width:16px;height:16px;font-size:11px;display:inline-flex}.fiber-tool .field-input{border:1px solid var(--line);background:#fff;border-radius:12px;align-items:center;padding:0 14px;display:flex}.fiber-tool .field-input:focus-within{border-color:var(--blue)}.fiber-tool .field-input input{width:100%;min-width:0;color:var(--ink);font-family:var(--mono);background:0 0;border:none;outline:none;flex:1;padding:14px 0;font-size:20px;font-weight:600}.fiber-tool .field-input input.accent{color:var(--blue)}.fiber-tool .field-input input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.fiber-tool .field-input input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.fiber-tool .unit{color:var(--muted);padding-left:8px;font-size:13px;font-weight:600}.fiber-tool .result-card{background:var(--bg);border:1px solid var(--line);border-left:3px solid var(--blue);border-radius:14px;margin-top:22px;padding:8px 18px}.fiber-tool .result-row{border-bottom:1px solid var(--line);justify-content:space-between;align-items:baseline;padding:14px 0;display:flex}.fiber-tool .result-row:last-child{border-bottom:none}.fiber-tool .result-label{color:var(--muted);font-size:15px}.fiber-tool .result-value{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--ink);font-size:18px;font-weight:700}.fiber-tool .result-row.big .result-value{font-size:24px}.fiber-tool .result-unit{color:var(--muted);font-size:13px;font-weight:500}.fiber-tool .result-value.good{color:var(--good)}.fiber-tool .result-value.bad{color:#dc2626}.fiber-tool .result-sub{letter-spacing:1.2px;text-transform:uppercase;color:var(--muted);padding:16px 0 6px;font-size:12px;font-weight:700}.fiber-tool .result-row.boxed{border:1px solid var(--line);background:#fff;border-radius:10px;margin:8px 0;padding:14px 16px}.fiber-tool .result-row.boxed .result-value{font-size:21px}.fiber-tool .verdict{border-radius:11px;margin:16px 0 0;padding:13px 16px;font-size:14px;font-weight:600}.fiber-tool .verdict.ok{color:var(--good);background:#ecfdf5}.fiber-tool .verdict.fail{color:#dc2626;background:#fef2f2}.fiber-tool .footnote{color:var(--muted);text-align:center;margin:14px 2px 0;font-size:13px;font-style:italic}.fiber-tool .conv-block{margin-bottom:26px}.fiber-tool .conv-block h3{margin:0 0 14px;font-size:15px}@media (max-width:640px){.fiber-tool .grid,.fiber-tool .grid.two{grid-template-columns:1fr 1fr;gap:12px}}@media (max-width:400px){.fiber-tool .grid,.fiber-tool .grid.two{grid-template-columns:1fr}}.or-divider{color:var(--muted);align-items:center;gap:12px;margin:16px 0;font-size:13px;display:flex}.or-divider:before,.or-divider:after{content:"";background:var(--line);flex:1;height:1px}.avatar-circle{color:#fff;background:linear-gradient(135deg, var(--accent,#2563eb), var(--orange,#f97316));border-radius:50%;flex:none;justify-content:center;align-items:center;width:64px;height:64px;font-size:22px;font-weight:700;display:flex}.profile-grid{grid-template-columns:1fr 1fr;align-items:start;gap:18px;margin-top:20px;display:grid}@media (max-width:640px){.profile-grid{grid-template-columns:1fr}}.admin-nav{border-bottom:1px solid var(--line);flex-wrap:wrap;gap:8px;margin:18px 0 22px;padding-bottom:0;display:flex}.admin-nav-item{color:var(--muted);border-bottom:2px solid #0000;border-radius:8px 8px 0 0;align-items:center;gap:7px;padding:9px 16px;font-size:14px;font-weight:600;text-decoration:none;display:inline-flex}.admin-nav-item:hover{color:var(--text)}.admin-nav-item.active{color:var(--accent,#2563eb);border-bottom-color:var(--accent,#2563eb)}.admin-badge{color:#fff;background:#f97316;border-radius:999px;padding:1px 7px;font-size:11px;font-weight:700}.stat-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;display:grid}.stat-card{border:1px solid var(--line);background:#fff;border-radius:12px;padding:18px;transition:border-color .15s,transform .1s}.stat-card:hover{border-color:var(--accent,#2563eb);transform:translateY(-1px)}.stat-card.accent{background:#fff7ed;border-color:#f97316}.stat-value{font-size:30px;font-weight:800;font-family:var(--mono);line-height:1}.stat-label{color:var(--muted);margin-top:8px;font-size:13px}.pill{color:#6b7280;background:#f3f4f6;border:1px solid #e5e7eb;border-radius:999px;padding:3px 10px;font-size:12px;font-weight:600;display:inline-block}.pill-green{color:#047857;background:#ecfdf5;border-color:#a7f3d0}.pill-amber{color:#b45309;background:#fffbeb;border-color:#fcd34d}.pill-blue{color:#1d4ed8;background:#eff6ff;border-color:#bfdbfe}.tag-you{color:#1d4ed8;background:#eff6ff;border-radius:999px;margin-left:8px;padding:1px 7px;font-size:11px;font-weight:600}.user-sub{color:var(--muted);margin-top:2px;font-size:13px;font-weight:400}.row-actions{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.row-err{color:#b91c1c;font-size:12px}