:root{--hub-ink:#0b2855;--hub-muted:#607590;--hub-blue:#2f68ed;--hub-line:#d9e4f3;--hub-bg:#f5f9ff;--hub-shadow:0 24px 65px rgba(32,70,126,.12);--line:#dfe7f2;--muted:#607590}
*{box-sizing:border-box}
html{background:var(--hub-bg);scroll-behavior:smooth}
body.tools-hub-page{min-width:320px;margin:0;background:radial-gradient(circle at 50% -5%,rgba(98,157,255,.18),transparent 36%),linear-gradient(#fbfdff,#f3f8ff);color:var(--hub-ink);font-family:Inter,"Segoe UI",Arial,sans-serif}
a{color:inherit;text-decoration:none}
.tools-shell{width:min(1180px,calc(100% - 40px));margin-inline:auto}
.tools-header{position:relative;z-index:20}
.tools-header .topbar{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:10px 0 22px;border-bottom:1px solid rgba(190,208,233,.65);margin-bottom:22px}
.tools-header .brand{display:flex;align-items:center;gap:11px}
.tools-header .logo{display:grid;width:44px;height:44px;place-items:center}
.tools-header .logo img{width:100%;height:100%;object-fit:contain}
.brand-copy{display:grid;gap:2px}.brand-copy strong{font-size:16px}.brand-copy span{color:#637894;font-size:10px}
.tools-header .nav-links{display:flex;align-items:center;justify-content:center;gap:8px;margin-left:auto}.tools-header .nav-links a{padding:8px 10px;border:1px solid transparent;border-radius:8px;font-size:13px;font-weight:800}
.tools-header .lang-toggle{display:inline-flex;align-items:center;gap:4px;padding:4px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.78);box-shadow:inset 0 0 0 1px rgba(58,120,255,.04),0 10px 24px rgba(58,120,255,.06)}
.tools-header .lang-btn{height:30px;min-width:34px;padding:0 10px;border:0;border-radius:999px;background:transparent;color:var(--muted);font:950 12px/1 Inter,"Segoe UI",sans-serif;cursor:pointer;transition:color .16s ease,background .16s ease,box-shadow .16s ease}
.tools-header .lang-btn.is-active{background:#5b83e8;color:#fff;box-shadow:none}
.tools-hero{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(310px,.75fr);align-items:center;gap:72px;min-height:440px;padding-block:72px 58px}
.tools-kicker{display:flex;align-items:center;gap:12px;margin:0 0 22px;color:#59718f;font-size:12px;letter-spacing:.2em}.tools-kicker span{width:34px;height:2px;background:#6f87a6}.tools-kicker b{font-weight:800}
.tools-hero h1{max-width:760px;margin:0;font-size:clamp(48px,5.3vw,76px);font-weight:790;letter-spacing:-.055em;line-height:.98}.tools-hero h1 em{color:var(--hub-blue);font-style:normal}.tools-hero-copy>p:last-child{max-width:650px;margin:26px 0 0;color:var(--hub-muted);font-size:17px;line-height:1.7}
.tools-hero-orbit{position:relative;width:310px;height:310px;justify-self:end;border:1px solid rgba(47,104,237,.16);border-radius:50%;background:rgba(255,255,255,.5);box-shadow:inset 0 0 0 40px rgba(47,104,237,.025)}
.tools-hero-orbit:before,.tools-hero-orbit:after{position:absolute;content:"";border:1px dashed rgba(47,104,237,.22);border-radius:50%;inset:32px}.tools-hero-orbit:after{inset:76px;border-style:solid}
.orbit-core,.orbit-mark{position:absolute;z-index:2;display:grid;place-items:center;border:1px solid #d5e2f4;background:#fff;box-shadow:0 15px 35px rgba(30,71,133,.14)}
.orbit-core{inset:50%;width:88px;height:88px;border-radius:25px;transform:translate(-50%,-50%)}.orbit-core img{width:60px}
.orbit-mark{width:54px;height:54px;border-radius:16px;color:var(--hub-blue)}.orbit-mark svg{width:26px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.orbit-compare{top:14px;left:128px}.orbit-convert{right:12px;bottom:58px}.orbit-formula{bottom:20px;left:48px;font:800 22px Georgia,serif}
.tool-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;padding-bottom:30px}
.hub-tool-card{position:relative;display:flex;min-height:470px;overflow:hidden;flex-direction:column;padding:20px 26px 27px;border:1px solid var(--hub-line);border-radius:25px;background:rgba(255,255,255,.9);box-shadow:var(--hub-shadow);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.hub-tool-card:before{position:absolute;right:-48px;bottom:-72px;width:210px;height:210px;border-radius:50%;background:radial-gradient(circle,rgba(47,104,237,.14),transparent 68%);content:""}
.hub-tool-card:hover{border-color:#abc4ef;box-shadow:0 30px 75px rgba(32,70,126,.17);transform:translateY(-5px)}
.card-visual{position:relative;display:grid;overflow:hidden;width:100%;height:174px;border-radius:19px;background:linear-gradient(145deg,#eef4ff,#e2ecff);place-items:center}.card-visual:after{position:absolute;width:150px;height:150px;border:1px solid rgba(47,104,237,.13);border-radius:50%;content:""}.card-visual svg{position:relative;z-index:1;width:min(92%,270px);height:150px}.card-visual svg *{vector-effect:non-scaling-stroke}.sheet-back,.sheet-front,.document{fill:#fff;stroke:#92b2ee;stroke-width:1.4}.sheet-front{fill:#f9fbff}.sheet-lines,.document-lines{fill:none;stroke:#8da9d4;stroke-linecap:round;stroke-width:2}.action-line{fill:none;stroke:#2f68ed;stroke-linecap:round;stroke-linejoin:round;stroke-width:2.4}.convert-visual{background:linear-gradient(145deg,#eaf9f5,#ddf2ec)}.convert-visual:after{border-color:rgba(23,132,107,.14)}.convert-visual .document{stroke:#63ad9d}.convert-visual .document-lines{stroke:#79a99e}.convert-visual .document-fold{fill:none;stroke:#63ad9d;stroke-linejoin:round;stroke-width:1.4}.convert-visual .action-line{stroke:#17846b}.formula-visual{grid-template-columns:auto 1fr auto;gap:13px;padding:24px;background:linear-gradient(145deg,#f2edff,#e8e0ff);color:#6844ca}.formula-visual:after{border-color:rgba(104,68,202,.14)}.formula-visual span,.formula-visual i{position:relative;z-index:1;display:grid;width:55px;height:55px;border-radius:16px;background:#fff;font:800 25px Georgia,serif;place-items:center;box-shadow:0 10px 24px rgba(78,53,143,.11)}.formula-visual code{position:relative;z-index:1;overflow:hidden;padding:15px;border:1px solid rgba(104,68,202,.16);border-radius:12px;background:rgba(255,255,255,.72);color:#39276e;font:700 11px/1.5 Consolas,monospace;text-overflow:ellipsis;white-space:nowrap}.formula-visual i{width:43px;height:43px;font:800 18px/1 Inter,sans-serif;font-style:normal}
.card-content{display:grid;margin-top:27px}.card-content small{color:#788ba4;font-size:10px;font-weight:800;letter-spacing:.14em}.card-content strong{margin-top:9px;font-size:28px;letter-spacing:-.035em}.card-content>span{min-height:68px;margin-top:13px;color:var(--hub-muted);font-size:13px;line-height:1.65}
.card-action{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:22px;border-top:1px solid #e2eaf5;color:#1f57c8;font-size:12px}.card-action i{display:grid;width:35px;height:35px;border-radius:50%;background:#edf3ff;font-size:17px;font-style:normal;place-items:center;transition:transform .2s ease}.hub-tool-card:hover .card-action i{transform:translateX(3px)}
.desktop-workspace-callout{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:18px;margin-top:28px;margin-bottom:85px;padding:24px 26px;border:1px solid #d9e4f3;border-radius:20px;background:#eaf2fe}.workspace-callout-icon{display:grid;width:46px;height:46px;border-radius:14px;background:#fff;color:#376ad7;place-items:center}.workspace-callout-icon svg{width:23px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.desktop-workspace-callout>span:nth-child(2){display:grid;gap:5px}.desktop-workspace-callout strong{font-size:14px}.desktop-workspace-callout small{color:#607590;font-size:12px;line-height:1.5}.desktop-workspace-callout a{padding:10px 13px;border-bottom:1px solid #87a9e8;color:#245cc7;font-size:12px;font-weight:750}
.site-footer{margin-top:0;padding:70px 0 24px;border-top:1px solid #cedbeb}.site-footer-main{display:grid;grid-template-columns:1.25fr .55fr .55fr .8fr;gap:64px;padding-bottom:58px}.footer-brand-link{display:inline-flex;align-items:center;gap:11px;color:#102d56}.footer-brand-link img{width:39px;height:39px;object-fit:contain}.footer-brand-link strong{font-size:19px}.site-footer-brand p{max-width:330px;margin:20px 0 14px;color:#64758a;font-size:13px;line-height:1.7}.footer-mail{color:#245dcc;font-size:12px;font-weight:750}.footer-column{display:flex;align-items:flex-start;flex-direction:column;gap:13px}.footer-column strong{margin-bottom:5px;color:#15335d;font-size:12px}.footer-column a{color:#66788e;font-size:12px}.footer-column a:hover{color:#245dcc}.footer-statement{align-self:start;padding-left:28px;border-left:1px solid #cfdbea}.footer-statement span{display:block;margin-bottom:10px;color:#6d7d91;font-size:9px;font-weight:850;letter-spacing:.13em;text-transform:uppercase}.footer-statement strong{color:#17365f;font-size:23px;letter-spacing:-.035em;line-height:1.2}.site-footer-bottom{display:flex;align-items:center;justify-content:space-between;padding-top:22px;border-top:1px solid #dbe5f1;color:#8190a2;font-size:10px}.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
@media(max-width:900px){.tools-hero{grid-template-columns:1fr}.tools-hero-orbit{display:none}.tool-grid{grid-template-columns:1fr}.hub-tool-card{min-height:405px}.card-content>span{min-height:0}.desktop-workspace-callout{grid-template-columns:auto 1fr}.desktop-workspace-callout a{grid-column:2;justify-self:start}.site-footer-main{grid-template-columns:1.2fr 1fr 1fr;gap:38px}.footer-statement{grid-column:1/-1;padding:24px 0 0;border-top:1px solid #dbe5f1;border-left:0}}
@media(max-width:640px){.tools-shell{width:calc(100% - 28px)}.tools-header .nav-links{display:none}.tools-hero{min-height:0;padding-block:56px 36px}.tools-kicker{margin-bottom:17px;font-size:10px}.tools-hero h1{font-size:clamp(39px,12vw,52px)}.tools-hero-copy>p:last-child{margin-top:20px;font-size:14px;line-height:1.65}.tool-grid{gap:14px}.hub-tool-card{min-height:390px;padding:16px 18px 21px;border-radius:20px}.card-visual{height:145px;border-radius:16px}.card-visual svg{height:132px}.formula-visual{gap:8px;padding:15px}.formula-visual span{width:48px;height:48px;border-radius:14px;font-size:22px}.formula-visual i{display:none}.formula-visual code{padding:12px 10px;font-size:9px}.card-content{margin-top:22px}.card-content strong{font-size:26px}.desktop-workspace-callout{grid-template-columns:auto 1fr;margin-bottom:55px;padding:19px}.desktop-workspace-callout a{display:inline-flex;grid-column:1/-1;justify-self:stretch;justify-content:space-between;padding:12px 0 4px}.site-footer{padding-top:50px}.site-footer-main{grid-template-columns:1fr 1fr;gap:34px 24px;padding-bottom:34px}.site-footer-brand{grid-column:1/-1}.footer-statement{display:none}.site-footer-bottom{align-items:flex-start;flex-direction:column;gap:8px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.hub-tool-card,.card-action i{transition:none}}

/* The desktop workspace leads the tools list as the primary, full editor. */
.workspace-feature-card{position:relative;display:grid;grid-template-columns:minmax(300px,.82fr) minmax(470px,1.18fr);align-items:center;gap:54px;min-height:330px;margin-top:0;margin-bottom:28px;padding:38px 46px;overflow:hidden;border:1px solid #cbdcf3;border-radius:26px;background:linear-gradient(135deg,rgba(255,255,255,.98),rgba(234,243,255,.96));box-shadow:0 24px 65px rgba(32,70,126,.13);color:var(--hub-ink)}
.workspace-feature-card:before{position:absolute;right:-10%;bottom:-105%;width:620px;height:620px;border:1px solid rgba(47,104,237,.11);border-radius:50%;box-shadow:inset 0 0 0 64px rgba(47,104,237,.025),inset 0 0 0 128px rgba(47,104,237,.018);content:""}
.workspace-feature-copy{position:relative;z-index:2}.workspace-feature-eyebrow{display:block;margin-bottom:13px;color:#356bd6;font-size:10px;font-weight:850;letter-spacing:.18em}.workspace-feature-copy h2{margin:0;font-size:clamp(38px,3.5vw,52px);letter-spacing:-.05em;line-height:1}.workspace-feature-copy p{max-width:470px;margin:18px 0 0;color:var(--hub-muted);font-size:14px;line-height:1.65}.workspace-feature-copy>a{display:inline-flex;align-items:center;justify-content:space-between;gap:32px;min-width:210px;margin-top:23px;padding:13px 16px;border:1px solid #2f68ed;border-radius:11px;background:#2f68ed;color:#fff;font-size:12px;font-weight:850;box-shadow:0 13px 28px rgba(47,104,237,.22);transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease}.workspace-feature-copy>a:hover{background:#245bd6;box-shadow:0 17px 34px rgba(47,104,237,.28);transform:translateY(-2px)}.workspace-feature-copy>a:focus-visible{outline:3px solid rgba(47,104,237,.3);outline-offset:4px}
.workspace-feature-visual{position:relative;z-index:2;min-height:245px;perspective:1100px}.workspace-mini-window{position:absolute;inset:10px 40px 4px 0;overflow:hidden;border:1px solid #cbdcf3;border-radius:19px;background:#fff;box-shadow:22px 28px 52px rgba(28,67,126,.2);transform:rotateY(-5deg) rotateX(2deg);transform-origin:left center}.workspace-mini-ribbon{display:flex;align-items:center;gap:7px;height:42px;padding:0 16px;border-bottom:1px solid #dce5f1;background:linear-gradient(#fff,#f2f6fc)}.workspace-mini-ribbon i{width:7px;height:7px;border-radius:50%;background:#cfdae8}.workspace-mini-ribbon i:first-child{background:#3470ea}.workspace-mini-ribbon span{width:56px;height:6px;margin-left:10px;border-radius:99px;background:#d0dced}.workspace-mini-ribbon span:last-child{width:35px;background:#5b8eed}.workspace-mini-formula{display:grid;grid-template-columns:43px 1fr;align-items:center;height:36px;border-bottom:1px solid #dce5f1;color:#517099;font:700 9px Consolas,monospace}.workspace-mini-formula b{display:grid;height:100%;border-right:1px solid #dce5f1;color:#2f68ed;font:800 italic 15px Georgia,serif;place-items:center}.workspace-mini-formula span{padding-left:12px}.workspace-mini-sheet{display:grid;grid-template-columns:repeat(5,1fr);height:164px}.workspace-mini-sheet i{border-right:1px solid #dbe4ef;border-bottom:1px solid #dbe4ef}.workspace-mini-sheet i:nth-child(-n+5){background:#edf2f8}.workspace-mini-sheet i:nth-child(8),.workspace-mini-sheet i:nth-child(9),.workspace-mini-sheet i:nth-child(14){background:#dce9ff}.workspace-mini-sheet i:nth-child(17){background:#e9f7f1}.workspace-mini-selection{position:absolute;left:40%;top:49%;width:38%;height:27%;border:3px solid #2f68ed;background:rgba(53,110,234,.1)}.workspace-mini-selection:after{position:absolute;right:-6px;bottom:-6px;width:8px;height:8px;border:2px solid #fff;background:#2f68ed;content:""}
.workspace-mini-result{position:absolute;z-index:4;right:0;bottom:1px;display:grid;width:160px;padding:18px;border:1px solid #cfddf2;border-radius:16px;background:rgba(255,255,255,.96);color:#153b78;box-shadow:0 20px 44px rgba(24,61,116,.2);backdrop-filter:blur(12px);transform:rotate(3deg)}.workspace-mini-result small{color:#6d82a0;font-size:7px;font-weight:850;letter-spacing:.14em}.workspace-mini-result strong{margin-top:7px;font-size:23px}.workspace-mini-result>span{display:flex;align-items:flex-end;gap:6px;height:35px;margin-top:8px}.workspace-mini-result i{flex:1;height:32%;border-radius:4px 4px 1px 1px;background:#b8d0fa}.workspace-mini-result i:nth-child(2){height:54%}.workspace-mini-result i:nth-child(3){height:72%;background:#73a0f2}.workspace-mini-result i:nth-child(4){height:100%;background:#2f68ed}
@media(max-width:1050px){.workspace-feature-card{grid-template-columns:.9fr 1.1fr;gap:28px;padding:34px}.workspace-mini-window{right:18px}.workspace-mini-result{width:145px}}
@media(max-width:760px){.workspace-feature-card{display:none!important}}
@media(prefers-reduced-motion:reduce){.workspace-feature-copy>a{transition:none}}