:root{color-scheme:light;--bg:#f7f8f5;--surface:#fff;--surface-2:#f0f3f1;--ink:#17243a;--muted:#647184;--line:#e2e7e7;--brand:#3654e7;--brand-text:#fff;--accent:#bdf27b;--soft:#e9edff;--hero:#152642;--hero-text:#fff;--shadow:0 20px 60px rgba(22,39,65,.06);--round:22px;--radius:14px;--font:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;--logo-filter:none}
:root[data-theme=dark]{color-scheme:dark;--bg:#0c1320;--surface:#141e2c;--surface-2:#1c2a39;--ink:#edf3f7;--muted:#a6b6c8;--line:#334154;--brand:#9db6ff;--brand-text:#111a2d;--accent:#c2ee89;--soft:#25375b;--hero:#182944;--hero-text:#fff;--shadow:0 24px 70px rgba(0,0,0,.23);--logo-filter:brightness(0) invert(1)}
@media(prefers-color-scheme:dark){:root[data-theme=auto]{color-scheme:dark;--bg:#0c1320;--surface:#141e2c;--surface-2:#1c2a39;--ink:#edf3f7;--muted:#a6b6c8;--line:#334154;--brand:#9db6ff;--brand-text:#111a2d;--accent:#c2ee89;--soft:#25375b;--hero:#182944;--hero-text:#fff;--shadow:0 24px 70px rgba(0,0,0,.23);--logo-filter:brightness(0) invert(1)}}
:root[data-theme=light]{--bg:#f7f8f5}
:root[data-theme=clean]{--bg:#fff;--surface:#fff;--surface-2:#fafbfd;--ink:#15202d;--muted:#67788c;--line:#d7dfe7;--brand:#2952bc;--accent:#b1eddd;--soft:#f0f4fa;--hero:#203954;--round:14px;--radius:9px;--shadow:none}
:root[data-theme=simple]{--bg:#fff;--surface:#fff;--surface-2:#f7f7f7;--ink:#121212;--muted:#565656;--line:#d8d8d8;--brand:#222;--brand-text:#fff;--accent:#e8e8e8;--soft:#f0f0f0;--hero:#252525;--hero-text:#fff;--round:2px;--radius:2px;--shadow:none}
:root[data-theme=warm]{--bg:#faf5ec;--surface:#fffaf4;--surface-2:#f3eadf;--ink:#382d26;--muted:#74665c;--line:#e6d8c7;--brand:#9a5b42;--accent:#ecd292;--soft:#f5e7d9;--hero:#614836;--hero-text:#fff9ef;--shadow:0 20px 50px rgba(80,50,30,.07)}
:root[data-theme=extra]{--bg:#f4e9d3;--surface:#fff0d9;--surface-2:#efddc0;--ink:#54321e;--muted:#785742;--line:#d9bda0;--brand:#a64526;--accent:#efbd6c;--soft:#f0ceb0;--hero:#7e3826;--hero-text:#ffefe0;--shadow:0 16px 45px rgba(106,51,15,.1)}
:root[data-theme=retro]{--bg:#e9e2cb;--surface:#f5efdb;--surface-2:#e4dcc5;--ink:#263f36;--muted:#66766a;--line:#b8bea9;--brand:#b2492d;--accent:#d0b36f;--soft:#e9d5ac;--hero:#29483d;--hero-text:#f7edcf;--round:8px;--radius:4px;--font:Georgia,"Times New Roman",serif;--shadow:5px 6px 0 rgba(45,65,48,.13)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 var(--font);-webkit-font-smoothing:antialiased}button,input,select,textarea{font:inherit}button,a,select{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}svg{max-width:100%}.container{width:min(1190px,calc(100% - 44px));margin-inline:auto}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.skip{position:absolute;inset-block-start:-100px;inset-inline-start:20px;z-index:100;background:var(--ink);color:var(--surface);padding:9px 14px}.skip:focus{inset-block-start:6px}:focus-visible{outline:3px solid #ed9355;outline-offset:3px}::selection{background:var(--accent);color:#14242e}
.site-header{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 88%,transparent);border-bottom:1px solid var(--line);backdrop-filter:blur(16px)}.nav-row{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:22px}.brand img{width:157px;height:auto;filter:var(--logo-filter)}.nav-links{display:flex;gap:30px;font-size:13px;font-weight:620}.nav-links a{color:var(--muted)}.nav-links a:hover,.footer-links a:hover{color:var(--brand)}.toolbar{display:flex;gap:8px}.select-wrap{display:flex;align-items:center;gap:4px;border:1px solid var(--line);border-radius:999px;padding-inline:11px 7px;color:var(--muted);background:var(--surface)}.select-wrap select{color:var(--ink);background:transparent;border:0;padding:10px 5px;max-width:123px;font-size:12px;cursor:pointer}.select-wrap select:focus{outline:0}.select-wrap:focus-within{outline:2px solid var(--brand)}
.hero{display:grid;grid-template-columns:1fr 1fr;min-height:560px;gap:36px;align-items:center;padding-block:76px 55px}.hero-copy{max-width:570px}.eyebrow{font-weight:750;letter-spacing:.14em;text-transform:uppercase;color:var(--brand);font-size:11px;display:flex;gap:10px;align-items:center}.pulse-dot{width:7px;height:7px;display:inline-block;border-radius:50%;background:var(--brand);box-shadow:0 0 0 5px var(--soft)}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(46px,5vw,76px);line-height:1.04;letter-spacing:-.063em;max-width:620px;margin:22px 0 22px;font-weight:760}h2{font-size:clamp(32px,3.5vw,47px);letter-spacing:-.051em;line-height:1.11;margin:17px 0 14px}h3{letter-spacing:-.025em}.hero-lead{font-size:17px;line-height:1.8;color:var(--muted);max-width:505px}.hero-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:27px}.btn{border:1px solid transparent;display:inline-flex;align-items:center;justify-content:center;gap:15px;padding:12px 18px;border-radius:11px;font-weight:700;font-size:13px;line-height:1.4;transition:transform .2s ease,background .2s ease,box-shadow .2s ease}.btn:hover{transform:translateY(-2px)}.btn-primary{color:var(--brand-text);background:var(--brand);box-shadow:0 8px 20px color-mix(in srgb,var(--brand) 17%,transparent)}.btn-primary:hover{filter:brightness(1.08)}.btn-secondary{background:var(--surface);color:var(--ink);border-color:var(--line)}.btn-plain{color:var(--ink);background:transparent}.feature-tags{display:flex;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:11px;margin-top:39px}.mini-tick{color:var(--brand);font-style:normal;margin-inline-end:5px;font-weight:800}
.hero-visual{position:relative;min-height:440px;overflow:hidden;border-radius:28px;background:var(--hero);color:var(--hero-text);box-shadow:0 30px 75px #101c3430;isolation:isolate}.visual-grid{position:absolute;inset:0;opacity:.25;background-image:linear-gradient(to right,#7b90b722 1px,transparent 1px),linear-gradient(to bottom,#7b90b722 1px,transparent 1px);background-size:37px 37px}.hero-visual:before{content:"";position:absolute;inset:-100px -60px auto auto;width:350px;height:350px;background:#536fea3a;border-radius:50%;filter:blur(50px)}.orbit{position:absolute;left:50%;top:50%;border:1px solid #9cb7e529;border-radius:50%;transform:translate(-50%,-50%)}.orbit-one{width:330px;height:330px}.orbit-two{width:490px;height:490px}.hero-lines{position:absolute;width:100%;height:100%;inset:0;color:#7892b9}.diagram-device{position:absolute;z-index:2;background:#fff;border:1px solid #e0e8f5;color:#1c2d45;border-radius:13px;box-shadow:0 13px 24px #0613264d;padding:10px 13px;display:grid;gap:1px;min-width:113px;line-height:1.5}.diagram-device strong{font-size:11px;letter-spacing:.04em}.diagram-device small{font-size:10px;color:#75869d;font-family:ui-monospace,monospace}.d-icon{display:block;color:#3654e7;font-size:22px;font-weight:bold;line-height:1.1}.center-device{left:39%;top:38%;background:#c7f68d;min-width:126px;border-color:#c7f68d}.device-a{left:11%;top:18%}.device-b{right:8%;top:17%}.device-c{right:11%;bottom:13%}.visual-topline{position:absolute;inset-block-start:20px;inset-inline:22px;display:flex;justify-content:space-between;gap:12px;font-size:10px;font-family:ui-monospace,monospace;letter-spacing:.14em;opacity:.8}.status-pill{display:inline-flex;align-items:center;gap:8px}.status-pill b{display:inline-block;width:6px;height:6px;border-radius:50%;background:#c7f68d}.visual-bottom{position:absolute;bottom:17px;left:22px;color:#b5c7e7;font-size:10px;letter-spacing:.15em;font-family:ui-monospace,monospace}
.photo-band{display:grid;grid-template-columns:1.35fr 1fr;gap:14px;padding-block:0 62px}.photo-card{overflow:hidden;position:relative;border-radius:var(--radius);height:195px;background:var(--surface-2)}.photo-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}.photo-card:hover img{transform:scale(1.045)}.photo-card:after{content:"";inset:0;position:absolute;background:linear-gradient(0deg,#061226ad,transparent 68%)}.photo-card span{position:absolute;left:19px;bottom:16px;z-index:1;color:white;font:700 10px ui-monospace,monospace;letter-spacing:.15em}
.tools-section{padding:42px 0 108px}.section-top{display:flex;justify-content:space-between;gap:26px;align-items:end;margin-bottom:30px}.section-top>div:first-child{max-width:660px}.section-top p{color:var(--muted);font-size:15px;line-height:1.7;margin-bottom:0}.tiny{font-size:10px}.number-pill{border:1px solid var(--line);border-radius:999px;padding:9px 16px;color:var(--muted);font-size:11px;letter-spacing:.15em;white-space:nowrap}.tool-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:13px;margin-bottom:16px}.tool-tab{text-align:start;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);color:var(--ink);padding:19px;min-height:204px;display:flex;flex-direction:column;align-items:flex-start;gap:7px;position:relative;transition:border-color .2s,transform .2s,background .2s}.tool-tab:hover{transform:translateY(-3px);border-color:var(--brand)}.tool-tab.is-active{border:2px solid var(--brand);background:var(--soft);padding:18px}.tool-index{font:700 10px ui-monospace,monospace;color:var(--muted);letter-spacing:.1em}.tool-ico{font-size:30px;line-height:1.2;margin:5px 0 9px;color:var(--brand)}.tool-tab strong{font-size:15px;letter-spacing:-.03em}.tool-short{font-size:11px;color:var(--muted);line-height:1.45}.tool-arrow{position:absolute;inset-inline-end:18px;top:16px;font-size:17px;color:var(--muted)}.tool-workspace{background:var(--surface);border:1px solid var(--line);border-radius:var(--round);overflow:hidden;box-shadow:var(--shadow)}.tool-panel[hidden]{display:none!important}.work-grid{display:grid;grid-template-columns:45% 55%;min-height:390px}.tool-form{padding:32px;border-inline-end:1px solid var(--line)}.panel-heading{position:relative;padding-inline-start:48px;margin-bottom:26px}.step-num{position:absolute;inset-inline-start:0;top:2px;background:var(--soft);color:var(--brand);border-radius:9px;width:32px;height:32px;display:grid;place-items:center;font-size:11px;font-weight:800}.panel-heading h3{font-size:24px;margin:0 0 5px}.panel-heading p{font-size:13px;color:var(--muted);margin:0}.tool-form label,.map-controls label{display:block;font-size:11px;font-weight:750;margin:15px 0 7px;color:var(--ink)}input,textarea,select{max-width:100%}.tool-form input,.tool-form textarea,.tool-form select,.map-controls input,.map-controls select{display:block;width:100%;border:1px solid var(--line);border-radius:9px;padding:12px 13px;outline:none;color:var(--ink);background:var(--bg);font-size:14px}.tool-form input:focus,.tool-form textarea:focus,.tool-form select:focus,.map-controls input:focus,.map-controls select:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--soft)}.tool-form textarea{resize:vertical;min-height:184px;font:13px/1.7 ui-monospace,SFMono-Regular,monospace}.tool-form #cidr-input,.tool-form #base-input{font:14px ui-monospace,SFMono-Regular,monospace;letter-spacing:.025em}.field-help{font-size:11px;line-height:1.55;color:var(--muted);margin:9px 0 0}.form-actions{display:flex;gap:9px;margin-top:24px;flex-wrap:wrap}.tool-result{background:var(--surface-2)}.result-head{min-height:55px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 22px;border-bottom:1px solid var(--line);font-size:10px;font-weight:800;color:var(--muted);letter-spacing:.1em}.result-actions{display:flex;gap:11px;flex-wrap:wrap}.action-quiet{border:0;background:none;color:var(--brand);font:700 11px var(--font);padding:5px;cursor:pointer}.action-quiet:hover{text-decoration:underline}.results-content{padding:23px;min-height:110px;color:var(--muted);font-size:13px}.metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.metric{border:1px solid var(--line);border-radius:10px;padding:12px;background:var(--surface)}.metric label{font-size:10px;color:var(--muted);font-weight:600;display:block;margin-bottom:6px}.metric strong{font-size:13px;color:var(--ink);overflow-wrap:anywhere;font-family:ui-monospace,SFMono-Regular,monospace}.metric.wide{grid-column:1/-1}.summary-bar{height:7px;margin:17px 0 5px;border-radius:99px;background:var(--line);overflow:hidden}.summary-bar div{background:var(--brand);height:100%;border-radius:99px}.mini-stats{display:flex;gap:17px;flex-wrap:wrap;font-size:12px;padding:4px 0 12px}.mini-stats strong{color:var(--ink)}.error-box{background:color-mix(in srgb,#f07e61 10%,var(--surface));border:1px solid #d68a7699;border-radius:9px;color:var(--ink);padding:15px}.success-box{border:1px solid #7aba8d80;background:color-mix(in srgb,#85d8a2 10%,var(--surface));color:var(--ink);padding:12px 14px;border-radius:9px;margin-bottom:15px}
.wide-form{border-inline-end:0;border-bottom:1px solid var(--line)}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:13px}.form-note{align-self:end;color:var(--muted);font:12px ui-monospace,monospace;padding-bottom:12px}.vlsm-header{display:grid;grid-template-columns:1fr 120px 38px;gap:9px;font-size:10px;font-weight:800;color:var(--muted);margin:20px 0 6px}.vlsm-row{display:grid;grid-template-columns:1fr 120px 38px;gap:9px;margin:8px 0}.vlsm-row input{min-width:0}.delete-row,.node-delete{border:1px solid var(--line);border-radius:9px;background:var(--surface-2);color:var(--muted);font-size:19px}.delete-row:hover,.node-delete:hover{color:#b22e24}.inner-result{background:var(--surface-2)}.data-table{width:100%;border-collapse:collapse;font-size:12px;text-align:start;color:var(--ink)}.table-scroll{overflow-x:auto}.data-table th,.data-table td{border-bottom:1px solid var(--line);padding:12px;text-align:start;white-space:nowrap}.data-table th{font-size:11px;background:var(--surface);color:var(--muted)}.data-table td{font-family:ui-monospace,monospace}.audit-item{padding:12px 14px;background:var(--surface);border:1px solid var(--line);border-radius:9px;margin-bottom:9px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}.audit-item span{overflow-wrap:anywhere;color:var(--ink);font:12px ui-monospace,monospace}.audit-item small{color:#cf5945;font-weight:800}
.map-layout{display:grid;grid-template-columns:310px minmax(0,1fr);min-height:575px}.map-controls{padding:27px;border-inline-end:1px solid var(--line)}.map-controls form button{margin-top:14px}.map-controls label{margin-top:12px}.edge-form{margin-top:23px;padding-top:14px;border-top:1px solid var(--line)}.map-board-wrap{min-width:0;background:var(--surface-2)}.map-board{height:425px;overflow:hidden;position:relative;background-image:radial-gradient(var(--line) 1.2px,transparent 1.2px);background-size:20px 20px}.map-board svg{display:block;width:100%;height:100%;touch-action:none}.map-node-list{display:flex;flex-wrap:wrap;gap:8px;padding:16px}.node-chip{font-size:11px;display:flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--surface);border-radius:100px;padding:4px 6px 4px 11px;color:var(--ink)}.node-delete{font-size:12px;min-width:22px;height:22px;border-radius:50%}.map-node{cursor:grab}.map-node:active{cursor:grabbing}.map-node rect{fill:var(--surface);stroke:var(--line);stroke-width:1.5}.map-node text{fill:var(--ink);pointer-events:none}.map-node .node-type{fill:var(--muted)}.map-node .node-emblem{fill:var(--brand)}.map-edge{stroke:var(--brand);stroke-width:2.3;fill:none;opacity:.72}.alert{position:fixed;bottom:24px;inset-inline-end:24px;z-index:70;background:var(--ink);color:var(--bg);padding:12px 18px;box-shadow:var(--shadow);border-radius:10px;font-size:13px;max-width:350px}
.benefit-section{background:var(--hero);color:var(--hero-text);padding:89px 0}.benefit-inner{display:grid;grid-template-columns:1fr 1.3fr;gap:70px}.benefit-intro .eyebrow{color:var(--accent)}.benefit-intro h2{max-width:390px}.benefit-intro p{color:#b7c3d2;line-height:1.8}.benefit-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.benefit-cards article{border:1px solid #ffffff30;border-radius:var(--radius);padding:22px 16px}.benefit-cards article>span{display:block;font-size:25px;color:var(--accent);margin-bottom:26px}.benefit-cards h3{font-size:15px;margin-bottom:8px}.benefit-cards p{font-size:12px;color:#bfcede;line-height:1.65;margin:0}.info-section{display:grid;grid-template-columns:1fr 1fr;gap:28px;padding-block:90px}.info-card{padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}.info-card h2{font-size:27px}.info-card p{font-size:13px;line-height:1.8;color:var(--muted)}.site-footer{border-top:1px solid var(--line);background:var(--surface)}.footer-grid{padding-block:45px;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}.footer-logo{font-size:27px;font-weight:850;letter-spacing:-.08em}.footer-logo span{color:var(--brand)}.footer-grid p{color:var(--muted);font-size:12px;max-width:300px;line-height:1.8;margin:10px 0}.footer-links{display:flex;flex-direction:column;gap:9px;font-size:12px;align-items:flex-start}.footer-bottom{border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;padding-block:18px;font:10px ui-monospace,monospace;letter-spacing:.12em;color:var(--muted)}
[dir=rtl] .photo-card span{left:auto;right:19px}[dir=rtl] .visual-bottom{left:auto;right:22px}[dir=rtl] .tool-tab,[dir=rtl] .data-table{text-align:right}[dir=rtl] .data-table td,[dir=rtl] .data-table th{text-align:right}[dir=rtl] .hero-visual{direction:ltr}[dir=rtl] .metrics .metric strong{direction:ltr;display:inline-block}[dir=rtl] .node-chip{padding-inline:11px 6px}
@media(max-width:1000px){.nav-links{gap:14px}.hero{gap:22px}.hero-visual{min-height:390px}.tool-grid{grid-template-columns:repeat(2,1fr)}.tool-tab{min-height:150px}.benefit-inner{grid-template-columns:1fr;gap:24px}.benefit-intro h2{max-width:700px}}
@media(max-width:730px){.container{width:min(100% - 28px,1190px)}.nav-row{flex-wrap:wrap;justify-content:space-between;padding-block:11px;gap:11px}.brand img{width:130px}.toolbar{gap:4px}.select-wrap{padding-inline:6px}.select-wrap select{max-width:95px;font-size:11px}.nav-links{order:3;width:100%;justify-content:space-between;gap:8px;font-size:12px}.nav-row{min-height:80px}.hero{grid-template-columns:1fr;padding-block:55px 30px;gap:28px;min-height:0}.hero-copy h1{font-size:clamp(39px,9vw,63px)}.hero-lead{font-size:15px}.hero-visual{min-height:360px}.hero-lines{height:100%}.photo-band{grid-template-columns:1fr 1fr;padding-bottom:35px;gap:9px}.photo-card{height:120px}.tools-section{padding:25px 0 65px}.section-top{align-items:start}.number-pill{display:none}.tool-grid{gap:8px}.tool-tab{padding:13px;min-height:168px}.tool-tab.is-active{padding:12px}.tool-index{font-size:9px}.tool-ico{font-size:24px;margin:1px 0 4px}.tool-tab strong{font-size:13px}.tool-short{font-size:10px}.work-grid,.map-layout{grid-template-columns:1fr}.tool-form{padding:22px;border-inline-end:0;border-bottom:1px solid var(--line)}.map-controls{border-inline-end:0;border-bottom:1px solid var(--line)}.map-board{height:340px}.benefit-section{padding:58px 0}.benefit-cards{grid-template-columns:1fr;gap:9px}.benefit-cards article{padding:18px}.benefit-cards article>span{margin-bottom:8px}.info-section{grid-template-columns:1fr;padding-block:50px;gap:12px}.footer-grid{grid-template-columns:1fr 1fr;gap:20px}.footer-grid>div:first-child{grid-column:1/-1}}
@media(max-width:420px){.toolbar .select-wrap svg{display:none}.toolbar .select-wrap select{max-width:82px}.hero-visual{min-height:325px}.diagram-device{min-width:95px;padding:7px 8px}.center-device{left:39%;top:39%;min-width:103px}.device-a{left:7%}.device-b{right:5%}.device-c{right:7%}.feature-tags{gap:10px}.tool-tab{min-height:182px}.metrics{grid-template-columns:1fr}.metric.wide{grid-column:1}.vlsm-header,.vlsm-row{grid-template-columns:minmax(0,1fr) 92px 34px}.result-head{padding:10px 14px}.result-actions{gap:4px}.action-quiet{font-size:10px}.footer-bottom{font-size:9px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}