:root{--paper:#f8faf8;--panel:#fffefd;--ink:#19242e;--muted:#63717c;--line:#dce8e4;--blue:#1769b0;--blue-deep:#155a9b;--blue-soft:#e9f5fc;--success:#27855f;--success-soft:#e7f6ed;--shadow:0 18px 45px rgba(23,91,137,.1)}
*{box-sizing:border-box}body{margin:0;color:var(--ink);background:radial-gradient(circle at 82% 8%,#e8f5ff 0,transparent 25%),var(--paper);font:14px/1.55 Manrope,Arial,sans-serif}a{color:var(--blue);text-decoration:none;font-weight:700}button,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:12px;padding:12px 17px;color:#fff;cursor:pointer;font:700 13px Manrope,Arial,sans-serif;background:linear-gradient(135deg,#3196dc,var(--blue-deep));box-shadow:0 10px 22px rgba(23,105,176,.18)}
.app-shell{display:grid;grid-template-columns:252px minmax(0,1fr);min-height:100vh}.sidebar{position:sticky;top:0;display:flex;flex-direction:column;height:100vh;padding:27px 17px 22px;border-right:1px solid var(--line);background:rgba(255,254,253,.92)}.brand{display:flex;align-items:center;gap:8px;min-height:43px;padding:0 9px;letter-spacing:0}.brand img{width:42px;height:42px;object-fit:cover;border-radius:10px}.brand strong{color:#16273b;font-size:18px;font-weight:800;letter-spacing:-.055em}.brand strong span{color:var(--blue)}.brand em{padding:4px 7px;border-radius:7px;color:var(--blue);background:#e8f4fc;font-size:11px;font-style:normal;font-weight:800;letter-spacing:.04em}.sidebar nav{display:grid;gap:5px;margin-top:44px}.nav-item{display:flex;align-items:center;gap:13px;padding:11px 12px;border-radius:10px;color:#53636c;font-weight:700}.nav-item:hover,.nav-item.active{color:var(--blue);background:var(--blue-soft)}.sidebar-foot{margin-top:auto;padding:16px 12px;border-radius:14px;color:#46616a;background:#edf7f1}.sidebar-foot small{display:block;margin-bottom:7px;color:var(--success);font-size:9px;font-weight:800;letter-spacing:.11em}.sidebar-foot strong{font-size:11px;line-height:1.55}
.workspace{width:min(1180px,100%);padding:0 54px 70px;margin:0 auto}.topbar{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:88px;border-bottom:1px solid var(--line)}.search{display:flex;align-items:center;gap:9px;width:min(360px,100%);padding:9px 12px;border:1px solid #d8e5e1;border-radius:10px;color:#71818a;background:#fff}.search input{width:100%;border:0;outline:0;color:var(--ink);font:inherit;background:transparent}.profile{display:flex;align-items:center;gap:9px;color:#465860;font-size:12px;font-weight:800}h1{max-width:800px;margin:14px 0 7px;font-size:clamp(32px,4vw,48px);line-height:1.1;letter-spacing:-.055em}h2{margin:34px 0 16px;font-size:20px;letter-spacing:-.03em}.eyebrow{margin:42px 0 0;color:var(--blue);font-size:10px;font-weight:800;letter-spacing:.13em}.subtitle{max-width:710px;margin:0;color:var(--muted);font-size:15px}.panel{padding:24px;border:1px solid var(--line);border-radius:18px;background:var(--panel);box-shadow:0 9px 22px rgba(48,79,75,.035)}.panel p:last-child{margin-bottom:0;color:var(--muted)}
.landing-hero{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(260px,.7fr);gap:36px;align-items:stretch;margin-top:52px;padding:48px;border:1px solid #cfe6f1;border-radius:26px;background:linear-gradient(135deg,#fffefd 0%,#edf8fd 100%);box-shadow:var(--shadow)}.landing-hero .eyebrow,.admin-callout .eyebrow,.signup-form .eyebrow{margin-top:0}.landing-hero h1{max-width:720px;font-size:clamp(38px,5vw,64px);font-weight:800}.landing-hero aside{display:flex;flex-direction:column;justify-content:center;gap:12px;padding:28px;border-radius:20px;color:#fff;background:#175f9f}.landing-hero aside span{font-size:34px}.landing-hero aside strong{font-size:20px}.landing-hero aside p{margin:0;color:#d8f0ff}.hero-actions{display:flex;flex-wrap:wrap;gap:22px;align-items:center;margin-top:25px}.home-grid,.learning-grid,.material-grid,.studio-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:20px}.home-grid .panel strong{display:block;margin:8px 0;font-size:20px}.home-grid .panel a{display:inline-block;margin-top:9px}
.video-panel{position:relative;min-height:315px;overflow:hidden;border-radius:18px;background:linear-gradient(145deg,#10385c,#287ab5);box-shadow:var(--shadow)}.video-panel::after{content:"Working with data sets";position:absolute;inset:auto 24px 32px;color:#fff;font-size:18px;font-weight:800}.play{position:absolute;z-index:1;top:50%;left:50%;width:58px;height:58px;padding:0;border-radius:50%;transform:translate(-50%,-50%)}.timeline{position:absolute;right:24px;bottom:20px;left:24px;height:4px;border-radius:9px;background:rgba(255,255,255,.28)}.timeline span{display:block;width:45%;height:100%;border-radius:inherit;background:#9de2ff}.video-panel small{position:absolute;right:24px;bottom:43px;color:#d7efff}.lesson-list{display:grid;gap:9px;padding:0;margin:13px 0 0;list-style:none}.lesson-list li{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);color:#56666e}.lesson-list li:last-child{border-bottom:0}.lesson-list .current{color:var(--blue);font-weight:800}.lesson-list .done b{color:var(--success)}.resource{display:flex;align-items:center;gap:13px}.resource>b{padding:10px 9px;border-radius:9px;color:#b43b43;background:#ffe9e9;font-size:11px}.resource span{display:grid;gap:2px}.resource small,.table-card span{color:var(--muted)}.resource a{margin-left:auto;font-size:12px}
.balance{display:grid;gap:6px;margin-top:28px;padding:30px;border-radius:20px;color:#fff;background:linear-gradient(125deg,#185a91,#2e92c8);box-shadow:var(--shadow)}.balance .eyebrow{margin:0;color:#c8edff}.balance strong{font-size:37px;letter-spacing:-.05em}.balance span{color:#d8f3ff}.balance button{justify-self:start;margin-top:16px;color:var(--blue);background:#fff;box-shadow:none}.table-card{padding:0;overflow:hidden}.table-card>div{display:grid;grid-template-columns:1.2fr 1fr auto;gap:18px;align-items:center;padding:18px 22px;border-bottom:1px solid var(--line)}.table-card>div:last-child{border:0}.table-card span{font-size:12px}.success{color:var(--success)}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:28px}.stats article{display:grid;gap:4px;padding:22px;border:1px solid var(--line);border-radius:16px;background:var(--panel)}.stats small{color:var(--muted);font-size:9px;font-weight:800;letter-spacing:.1em}.stats strong{font-size:28px;letter-spacing:-.05em}.stats span{color:var(--success);font-size:11px;font-weight:700}.admin-callout{display:flex;justify-content:space-between;gap:24px;align-items:center;margin-top:26px;padding:24px 28px;border:1px solid #cce8d7;border-radius:18px;background:#e9f6ee}.admin-callout .eyebrow{color:var(--success)}.admin-callout strong,.admin-callout span{display:block}.admin-callout strong{font-size:18px}.admin-callout span{margin-top:4px;color:#52715f;font-size:13px}.welcome,.form-error{padding:12px 15px;border-radius:10px;color:#1d724e;background:var(--success-soft);font-weight:600}.toolbar{display:flex;justify-content:space-between;gap:18px;margin:30px 0}.toolbar .search{width:480px}.toolbar button{margin:0}.dropzone{display:grid;place-items:center;gap:10px;min-height:280px;padding:25px;border:2px dashed #a9cfdf;border-radius:18px;color:#55717e;background:#effaff;text-align:center}.dropzone>b{color:var(--blue);font-size:32px}.dropzone strong{color:var(--ink);font-size:17px}.dropzone span{font-size:12px}
.onboarding{min-height:100vh;background:linear-gradient(145deg,#eff9fc,#fffdf9 50%,#edf8f2)}.signup-shell{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;max-width:1120px;margin:auto;padding:58px 30px}.signup-brand{grid-column:1/-1}.signup-brand img{width:148px;height:108px;object-fit:contain;object-position:center}.signup-copy{align-self:center}.signup-copy h1{font-size:56px;font-weight:800}.signup-copy>p{max-width:520px;color:var(--muted);font-size:17px}.pill{display:inline-block;padding:7px 10px;border-radius:99px;color:var(--blue);background:#e3f4fc;font-size:11px;font-weight:800;letter-spacing:.08em}.signup-copy ul{display:grid;gap:12px;padding:0;list-style:none;color:#40545e}.signup-copy li::before{content:"✓";display:inline-grid;place-items:center;width:20px;height:20px;margin-right:10px;border-radius:50%;color:#23865c;background:#dff3e9;font-size:12px;font-weight:800}.signup-form{padding:34px;border:1px solid #d7e8e2;border-radius:24px;background:var(--panel);box-shadow:0 24px 60px rgba(30,75,76,.12)}.signup-form h2{margin:6px 0;font-size:27px}.signup-form label{display:grid;gap:7px;margin-top:15px;color:#354852;font-size:13px;font-weight:700}.signup-form input,.signup-form select{padding:12px 13px;border:1px solid #cdded9;border-radius:10px;color:var(--ink);background:#fbfefd;font:14px Manrope,Arial,sans-serif}.signup-form button{width:100%;margin-top:22px}.fine-print{color:var(--muted);font-size:11px;text-align:center}
@media(max-width:900px){.workspace{padding:0 28px 45px}.app-shell{grid-template-columns:78px minmax(0,1fr)}.sidebar{padding-inline:12px}.brand{padding:0}.brand strong,.brand em,.nav-item span,.sidebar-foot{display:none}.nav-item{justify-content:center;padding:11px}.landing-hero,.signup-shell{grid-template-columns:1fr}.landing-hero{padding:30px}.signup-shell{gap:28px;padding:30px 20px}.signup-copy h1{font-size:40px}}@media(max-width:620px){.app-shell{display:block}.sidebar{position:static;flex-direction:row;align-items:center;width:100%;height:auto;padding:12px 16px;border-right:0;border-bottom:1px solid var(--line)}.sidebar nav{display:flex;gap:1px;margin:0 0 0 auto}.sidebar nav a:nth-child(n+4){display:none}.nav-item{padding:8px}.workspace{padding:0 18px 38px}.topbar{min-height:72px}.profile span{display:none}.landing-hero{gap:24px;margin-top:28px;padding:25px}.landing-hero h1{font-size:37px}.home-grid,.learning-grid,.material-grid,.studio-grid,.stats{grid-template-columns:1fr}.table-card>div{grid-template-columns:1fr;gap:3px}.resource{align-items:flex-start;flex-wrap:wrap}.resource a{margin-left:0}.toolbar,.admin-callout{align-items:stretch;flex-direction:column}.toolbar .search{width:100%}.balance{padding:24px}}