/* Local system font stack; no external requests, compatible with site CSP. */

:root{color-scheme:light;--ink:#222841;--muted:#626b82;--violet:#6847bc;--violet-dark:#4f309e;--line:#e5e4f0;--soft:#f4f1fc;--mint:#e6f5ef;--radius:22px;--font:Inter,"Segoe UI",Arial,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:22px}body{margin:0;background:#f8f9fd;color:var(--ink);font:15px/1.6 var(--font);-webkit-font-smoothing:antialiased}body,input,select,textarea,button{font-family:var(--font)}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{outline:3px solid 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20px;background:#fff;border-radius:12px;z-index:50}.skip-link:focus{top:14px}.site-header{display:flex;align-items:center;justify-content:space-between;padding-block:28px;border-bottom:1px solid #ddddeb}.brand{display:flex;align-items:center;gap:12px}.brand svg{width:48px;height:48px;fill:none;stroke:var(--violet);stroke-width:1.2}.brand strong{display:block;font-size:23px;line-height:1.3;letter-spacing:.14em}.brand small{display:block;font-size:10px;letter-spacing:.16em;text-transform:uppercase}.site-header nav{display:flex;align-items:center;gap:30px;font-size:12px;font-weight:650}.site-header nav a{transition:color .2s,transform .2s}.site-header nav a:hover{color:var(--violet);transform:translateY(-2px)}.hero{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:7%;padding-block:60px 54px}.eyebrow{font-size:10px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}.spark{font-size:22px;vertical-align:middle;color:var(--violet);margin-right:7px}.hero h1{font-size:clamp(38px,4.3vw,64px);font-weight:750;margin-block:17px 21px;letter-spacing:-.06em;line-height:1.08}.hero h1 span{color:var(--violet)}.hero-lead{max-width:490px;font-size:15px;line-height:1.8;color:#59637b}.demo-label{display:inline-flex;align-items:center;gap:9px;margin-top:26px;border:1px solid #d5cce8;color:#594188;background:#ffffff86;border-radius:50px;padding:7px 13px;font-size:10px;font-weight:750}.demo-label>span{width:6px;height:6px;border-radius:50%;background:#9679c9}.hero-art{position:relative;border-radius:50% 50% 22px 22px;isolation:isolate;padding:10px;background:linear-gradient(145deg,#fff9,#fff3);box-shadow:0 20px 70px #aaa1c233}.hero-art::before{content:'';position:absolute;border:1px solid #ffffffa8;inset:-14px;border-radius:inherit;z-index:-1}.hero-art img{height:350px;width:100%;object-fit:cover;border-radius:inherit}.hero-art::after{content:'';position:absolute;inset:10px;border-radius:inherit;background:linear-gradient(transparent 45%,#1e1d496f)}.hero-art figcaption{position:absolute;bottom:34px;left:34px;color:#fff;z-index:1}.hero-art figcaption span{display:block;font-size:9px;text-transform:uppercase;letter-spacing:.16em;margin-bottom:6px}.hero-art figcaption strong{font-size:20px;font-weight:650;letter-spacing:-.025em}.art-orbit{position:absolute;right:-20px;top:22%;color:var(--violet);font-size:44px;z-index:1;filter:drop-shadow(0 0 16px #fff);animation:orbit-float 7s ease-in-out infinite}.workspace{background:#ffffffa8;border:1px solid #fff;border-radius:30px;box-shadow:0 18px 70px #6970960b;padding:29px}.workspace-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.workspace-top 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0;font-size:11px;line-height:1.65;border-bottom:1px solid #f0eef6}.task-item:last-child{border-bottom:0}.task-item input{margin:3px 0 0;flex:0 0 15px;width:15px;height:15px;min-height:0;accent-color:var(--violet);padding:0}.task-item input:checked+span{color:#777e8d;text-decoration:line-through}.empty-tasks{font-size:11px;color:var(--muted);padding:15px 0}.constructor-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:22px;align-items:start}.constructor-form{background:#f8f8fc}.constructor-form h3{margin-bottom:22px}.constructor-form label,.science-checklist>label{display:block;font-size:11px;font-weight:750;margin-bottom:7px}.constructor-form label:not(:first-of-type){margin-top:18px}input,select,textarea{display:block;width:100%;min-height:44px;border:1px solid #dcdde9;border-radius:10px;padding:11px 12px;background:#fff;color:var(--ink);font-size:11px;line-height:1.65;transition:border .2s,box-shadow 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dd{margin:0;font-size:12px;font-weight:650;overflow-wrap:anywhere}.passport-step{display:flex;align-items:flex-start;gap:14px;padding:18px;border-radius:13px;background:#edf5f1;margin-bottom:22px}.step-symbol{display:grid;place-items:center;background:#d8ebe2;border-radius:50%;flex:0 0 30px;height:30px;color:#438576;font-size:20px}.passport h4{font-size:12px;letter-spacing:0;margin-bottom:7px}.passport-step p{font-size:11px;color:#4a6a61}.passport-prerequisites{font-size:10px;color:var(--muted);line-height:1.8;margin-bottom:21px}.passport-prerequisites h4{color:var(--ink)}.passport-prerequisites ul{padding-left:16px;margin-block:10px}.passport-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.button{display:inline-flex;justify-content:center;align-items:center;gap:13px;border-radius:10px;padding:13px 16px;font-size:10px;font-weight:750;min-height:44px;transition:transform .22s,box-shadow .22s,background .22s}.button:hover{transform:translateY(-3px);box-shadow:0 8px 19px #6f52a020}.button-primary{background:var(--violet);color:#fff}.button-primary:hover{background:var(--violet-dark)}.button-soft{background:#f0edf7;color:#674c92}.print-address{display:none}.source-note{font-size:10px;color:var(--muted);margin:20px 3px 0;line-height:1.9}.source-note a{color:var(--violet);text-decoration:underline;text-underline-offset:3px}.science-stages{display:grid;grid-template-columns:repeat(6,1fr);gap:9px;margin:8px 0 23px}.science-stage{position:relative;background:#f8f8fc;border:1px solid #e6e3ef;border-radius:14px;display:flex;align-items:center;gap:8px;padding:15px 11px;text-align:left;transition:background .2s,transform .2s,box-shadow .2s}.science-stage span{display:grid;place-items:center;flex:0 0 26px;width:26px;height:26px;font-size:10px;border-radius:50%;color:var(--violet);background:#eee8f8}.science-stage strong{font-size:10px;font-weight:750}.science-stage[aria-selected=true]{background:#ede7f9;border-color:#bca4dd}.science-stage[aria-selected=true] span{background:var(--violet);color:#fff}.science-stage:hover{transform:translateY(-3px);box-shadow:0 5px 18px #5f43a011}.science-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:21px}.science-detail{position:relative;overflow:hidden;padding:30px;background:radial-gradient(circle at 95% 0,#e9e5f7,transparent 40%),#fff}.science-detail-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:11px}.science-symbol{font-size:47px;color:#a28abe;line-height:1}.science-detail h3{font-size:32px;margin-block:5px 16px}.science-summary{font-size:13px;color:var(--muted);line-height:1.9;max-width:600px}.science-evidence{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:25px 0}.science-evidence>div{border-top:1px solid #e1dce9;padding-top:17px}.science-evidence dt{font-size:10px;color:#674f91;font-weight:750;margin-bottom:8px}.science-evidence dd{margin:0;color:var(--muted);font-size:11px;line-height:1.9}.science-example{display:flex;flex-direction:column;gap:7px;background:#f3f6fc;border-left:2px solid #aca6d6;padding:17px 20px;font-size:11px;color:var(--muted);line-height:1.8}.science-example strong{font-size:10px;color:var(--ink)}.science-actions{display:flex;align-items:center;gap:22px;margin-top:25px}.science-checklist h3{margin-bottom:12px}.science-checklist .small-note{margin:0 0 13px}.science-checklist .task-item{font-size:11px}.check-progress{margin:23px 0;font-size:10px;color:var(--muted)}.progress-track{height:4px;background:#efebf5;border-radius:8px;margin-top:9px;overflow:hidden}.progress-track span{display:block;height:100%;background:linear-gradient(90deg,#9b7acb,#76b8ab);width:0;transition:width .3s}.science-checklist .button{margin-top:15px;width:100%}.library-strip{display:grid;grid-template-columns:1.6fr .7fr .7fr .9fr;gap:30px;align-items:center;margin-block:45px 40px;padding:28px 32px;border-radius:20px;background:linear-gradient(115deg,#eeeaf8,#eff5f7)}.library-strip h2{font-size:21px;margin-top:9px}.library-link{padding:3px 0 3px 24px;border-left:1px solid #d7d5e5;display:flex;flex-direction:column;align-items:flex-start;transition:transform .25s,color .25s}.library-link:hover{color:var(--violet);transform:translateY(-3px)}.library-link strong{font-size:33px;font-weight:500;letter-spacing:-.06em;line-height:1.3}.library-link span:last-child{font-size:10px;color:var(--muted)}.library-symbol{font-size:33px;line-height:1.3}.site-footer{display:flex;justify-content:space-between;align-items:center;gap:20px;border-top:1px solid var(--line);padding-block:25px 35px;font-size:10px;color:var(--muted)}.site-footer a:hover{color:var(--violet)}.toast{position:fixed;left:50%;bottom:24px;max-width:calc(100% - 32px);transform:translate(-50%,30px);opacity:0;pointer-events:none;border-radius:12px;background:#2d2346;color:#fff;padding:13px 22px;box-shadow:0 8px 30px #29213e33;font-size:12px;transition:opacity .2s,transform .2s;z-index:20}.toast.is-visible{opacity:1;transform:translate(-50%,0)}.no-script{background:#fcf1df;padding:15px;border-radius:12px;font-size:12px}
@keyframes orbit-float{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-10px) rotate(12deg)}}@keyframes panel-enter{from{opacity:.6;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}
@media(min-width:1500px){.hero-art img{height:380px}.hero{padding-block:72px 65px}}
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