:root{--navy:#101b35;--accent:#ff9854;--line:#dce2ec;--muted:#586579}*{box-sizing:border-box}body{margin:0;background:#f3f5f9;color:var(--navy);font:15px/1.6 system-ui,sans-serif}header{height:80px;background:var(--navy);color:white;padding:0 4vw;display:flex;align-items:center;gap:24px}header span{margin-left:auto;color:#c8d2e4;font-size:12px}.brand{font-size:22px;font-weight:800;text-decoration:none;color:inherit;display:flex;gap:12px;align-items:center}.brand b{background:var(--accent);color:var(--navy);border-radius:10px;padding:6px;font-size:18px}main{display:grid;grid-template-columns:250px 1fr;max-width:1500px;margin:auto}aside{padding:40px 25px;border-right:1px solid var(--line);min-height:calc(100vh - 80px)}small{font-size:10px;letter-spacing:.12em;font-weight:700;color:var(--muted)}aside h2{font-size:24px;line-height:1.2}aside p{color:var(--muted)}nav{display:grid;gap:8px;margin:30px 0}.selected{background:var(--navy);color:white}button,a,input,select,textarea{font:inherit}button{border:1px solid var(--line);border-radius:9px;padding:10px 15px;cursor:pointer;background:white;color:var(--navy);font-weight:650}button:hover{filter:brightness(.95)}button:focus-visible,a:focus-visible{outline:3px solid #2370e8;outline-offset:3px}.primary{background:var(--accent);border-color:var(--accent);color:#101b35}.note{font-size:12px;margin:30px 0}aside>a{color:var(--navy);font-weight:700;font-size:13px}section{padding:45px;min-width:0}h1{font-size:clamp(30px,3.5vw,48px);letter-spacing:-.04em;line-height:1.1;margin:12px 0 20px}h2{font-size:21px}.heading{display:flex;align-items:center;justify-content:space-between;gap:16px}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:30px 0}article{background:white;padding:25px;border:1px solid var(--line);border-radius:16px;margin-bottom:18px}.metrics article{margin:0}.metrics strong{display:block;font-size:35px}.metrics .text{font-size:20px;margin-top:10px}.grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}label{display:block;font-size:13px;font-weight:650;margin:14px 0}input,select,textarea{width:100%;padding:11px;background:#f9fafc;border:1px solid #b9c4d4;border-radius:8px;color:var(--navy);margin-top:6px}textarea{min-height:85px}.row{display:flex;gap:15px}.row>*{flex:1;min-width:0}.student-button{width:100%;text-align:left;margin:6px 0;padding:16px}.student-button small{display:block}.student-button.active{border-color:#4367a8;background:#edf2fc}.pill{background:#eaf0fb;padding:5px 10px;border-radius:20px;font-size:10px;font-weight:800}.reference{background:#f0f3f9;padding:20px;border-radius:10px;margin:22px 0}.reference strong{display:block}.session{max-width:720px;margin-top:30px}#saved,#finished{color:#235b40;font-weight:700}dialog{border:1px solid var(--line);border-radius:18px;padding:28px;width:min(440px,90vw)}dialog::backdrop{background:#101b3580}[hidden]{display:none!important}@media(max-width:900px){main{grid-template-columns:1fr}aside{min-height:0;border-right:0;padding:25px}aside h2,aside>p:not(.note){display:none}nav{grid-template-columns:1fr 1fr;margin:15px 0}.note{margin:15px 0}section{padding:25px}.grid{grid-template-columns:1fr}.metrics{grid-template-columns:1fr 1fr}.metrics article:last-child{grid-column:1/-1}header{gap:10px}header span{font-size:10px;max-width:110px}.heading{align-items:flex-start}.heading>button{font-size:12px}}
body{background:radial-gradient(ellipse at 75% 20%,#233b6240,transparent 60%),#080d17}
header{height:76px;background:#0b1322;border-bottom:1px solid #ffffff12}
main{max-width:1700px;grid-template-columns:245px minmax(0,1fr)}
aside{color:#f3f5fb;border-right:1px solid #ffffff10;padding:32px 23px}
aside small{color:#b9c8df}
aside p{color:#96a8c4;font-size:13px}
aside nav button{background:transparent;color:#a7b9d5;border-color:#ffffff18;text-align:left;font-size:12px}
aside nav button.selected{background:#ff9854;color:#101b35;border-color:#ff9854}
aside>a{color:#f7b485}
.plan-meter{background:#111e33;padding:18px;border:1px solid #ffffff16;border-radius:12px}
.plan-meter small{font-size:8px}
.plan-meter strong{display:block;font-size:19px;margin:8px 0}
.plan-meter progress{display:block;width:100%;height:5px;margin:12px 0 17px;accent-color:#ff9854}
.plan-meter a{font-size:11px;color:#ffb585}
.demo-stage{padding:35px;min-width:0}
section.browser-window{padding:0;background:#f3f5f9;border:1px solid #ffffff24;border-radius:14px;overflow:hidden;box-shadow:0 35px 90px #0005}
.window-chrome{display:flex;align-items:end;height:45px;background:#dce2eb;padding:0 16px;gap:20px}
.traffic{display:flex;gap:7px;align-self:center}
.traffic i{width:11px;height:11px;border-radius:50%;background:#ff6058;border:1px solid #0001}
.traffic i:nth-child(2){background:#ffbd2e}.traffic i:nth-child(3){background:#28c840}
.browser-tab{height:34px;display:flex;align-items:center;gap:9px;border-radius:9px 9px 0 0;background:#f4f6fa;padding:0 16px;font-size:11px;max-width:310px}
.browser-tab span{margin-left:22px;font-size:16px;color:#7e8ba0}
.window-controls{margin-left:auto;align-self:center;font-size:10px;letter-spacing:7px;color:#728096}
.address-bar{height:43px;background:#f4f6fa;border-bottom:1px solid #dce2ec;display:flex;gap:18px;align-items:center;padding:0 18px;font-size:13px;color:#7d8ba0}
.address-bar>div{flex:1;background:#e9edf4;padding:5px 12px;border-radius:6px;font-size:10px;color:#61718a}
.window-content{padding:30px;max-height:calc(100vh - 245px);min-height:450px;overflow:auto}
.window-content h1{font-size:35px}
.window-content .heading>div>p{font-size:12px;color:#68758b}
.window-content article{padding:20px}
.window-content .metrics{gap:12px;margin:25px 0}
.window-content .metrics small{font-size:8px}
.window-content .metrics strong{font-size:28px}
.window-content .metrics .text{font-size:17px}
.window-content .grid{gap:16px}
.window-content form,label{font-size:12px}
.device-caption{text-align:center;color:#8093b0;font-size:11px;margin:22px auto 0;max-width:600px}
section.phone-device{width:min(390px,100%);height:790px;max-height:calc(100vh - 145px);min-height:570px;padding:0;margin:0 auto;background:#f3f5f9;border:9px solid #1e293d;border-radius:48px;box-shadow:0 0 0 2px #52627d,0 35px 90px #0008;overflow:hidden;position:relative;display:flex;flex-direction:column}
.phone-status{height:48px;flex-shrink:0;display:flex;align-items:center;justify-content:space-between;padding:0 23px;font-size:11px;color:#101b35;background:#f3f5f9;position:relative}
.dynamic-island{width:100px;height:27px;border-radius:20px;background:#0a0e17;position:absolute;top:7px;left:50%;transform:translateX(-50%)}
.phone-status>span:last-child{font-size:10px;letter-spacing:1px}
.device-screen{padding:0 20px 25px;overflow-y:auto;flex:1;scrollbar-width:thin}
.device-brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:15px;padding:12px 0 25px}
.device-brand>span{margin-left:auto;font-size:9px;color:#7d8ba0;font-weight:500}
.device-screen>small{font-size:8px}
.device-screen>h1{font-size:29px;line-height:1.15;margin:14px 0}
.device-screen>p{font-size:11px;color:#64748d}
.device-screen article{padding:18px;border-radius:16px;margin:18px 0}
.device-screen article h2{font-size:18px}
.device-screen article h3{font-size:16px}
.device-screen article p{font-size:11px}
.device-screen .session{margin-top:25px}
.device-screen .reference{padding:15px;margin:18px 0}
.device-screen .reference small{font-size:7px;letter-spacing:.05em}
.device-screen input,.device-screen textarea{font-size:12px;padding:10px}
.device-screen label{font-size:10px}
.device-screen button.primary{width:100%;font-size:11px;padding:13px 10px}
.device-screen .row{gap:10px}
.device-screen .row>label{min-width:0}
.device-screen .pill{font-size:8px}
.device-screen #logs{font-size:11px;padding-left:20px}
.device-screen #history{font-size:11px}
.phone-home{height:22px;flex-shrink:0;position:relative;background:#f3f5f9}
.phone-home:after{content:"";position:absolute;width:110px;height:4px;bottom:7px;left:50%;transform:translateX(-50%);background:#101b35;border-radius:10px}
.button-link{display:block;text-decoration:none;padding:13px 16px;border-radius:9px;text-align:center;font-weight:700;font-size:12px}
.upgrade-content{padding:8px}
.upgrade-content h2{font-size:27px;line-height:1.2;margin-top:22px}
.upgrade-content p{font-size:13px;color:#61718a}
.upgrade-content button{width:100%;margin-top:12px}
@media(max-width:1100px){main{grid-template-columns:210px minmax(0,1fr)}aside{padding:25px 17px}.demo-stage{padding:25px}.window-content{padding:20px}.window-content .grid{grid-template-columns:1fr}.window-content .metrics{grid-template-columns:1fr 1fr}.window-content .metrics article:last-child{grid-column:1/-1}}
@media(max-width:900px){main{grid-template-columns:1fr}aside{padding:20px;border:0;min-height:0}aside nav{margin:0 0 15px}aside>small,aside>h2,aside>p:not(.note),.plan-meter{display:none}aside .note{font-size:10px;margin:5px 0 10px}aside>a{font-size:11px}.demo-stage{padding:0 16px 25px}.window-content{max-height:none;min-height:0;padding:20px}.window-content h1{font-size:28px}.heading{flex-direction:column;align-items:stretch}.heading>button{align-self:flex-start}.browser-tab{font-size:9px;padding:0 10px;gap:6px}.browser-tab span{margin-left:5px}.window-controls{display:none}.window-chrome{padding:0 12px;gap:12px}.address-bar{padding:0 12px;gap:9px}.address-bar>div{font-size:8px}.window-content .metrics{gap:8px}.window-content article{padding:15px}.window-content .metrics .text{font-size:16px}section.phone-device{max-height:none;height:770px;min-height:0;width:min(370px,100%);border-width:7px;border-radius:42px}.phone-status{padding:0 17px}.device-screen{padding:0 17px 20px}.device-caption{font-size:10px;padding:0 15px}header{height:70px;padding:0 18px}.brand{font-size:18px}header>span{max-width:100px;font-size:9px}header>button{font-size:10px;padding:8px 10px}}