@charset "UTF-8";
:root{--navy:#002060;--blue:#0047ff;--pale:#e5efff;--ink:#172a45;--muted:#526780;--orange:#ff8901;--line:#cbdbf4;--green:#136a50;--radius:18px;font-family:Inter,'Golos Text','Segoe UI',sans-serif;color:var(--ink);background:#f6f9ff;font-size:17px;line-height:1.65}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:120px}body{margin:0;background:radial-gradient(ellipse at 8% 0,#e1edff,transparent 28%),#f8faff}a{color:#0040cf;text-underline-offset:4px}button,input,select{font:inherit}button,.button{cursor:pointer;border:1px solid #a7bee5;background:#fff;color:var(--navy);border-radius:10px;padding:9px 15px;font-weight:650;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:7px;line-height:1.35;min-height:44px}button:hover,.button:hover{background:var(--pale);border-color:var(--blue)}button:disabled{opacity:.55;cursor:not-allowed}button.primary,.button.primary{background:var(--blue);color:white;border-color:var(--blue)}:focus-visible{outline:3px solid #ef8300;outline-offset:4px}button[aria-pressed=true]{background:var(--navy);color:#fff}h1,h2,h3,h4{color:var(--navy);line-height:1.2;letter-spacing:-.025em}h1{font-size:clamp(32px,5vw,62px);margin:20px 0}h2{font-size:clamp(25px,3.2vw,37px);margin:12px 0 20px}h3{font-size:21px;margin:12px 0}h4{font-size:18px}p{margin:10px 0 18px}li{margin:7px 0}strong{color:inherit}small,.muted{color:var(--muted)}[hidden]{display:none!important}.skip{position:fixed;top:-100px;left:20px;z-index:1000;background:#fff;padding:10px}.skip:focus{top:10px}
.top{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);box-shadow:0 4px 20px #0020600a;padding:10px max(18px,calc((100vw - 1240px)/2));display:flex;align-items:center;gap:16px;flex-wrap:wrap}.brand{font-size:13px;font-weight:850;letter-spacing:.04em;text-decoration:none;white-space:nowrap}.top nav{display:flex;gap:12px;overflow:auto;flex:1;white-space:nowrap;font-size:13px}.top nav a{text-decoration:none;padding:6px 3px;color:var(--navy)}.top button{font-size:12px;padding:7px 10px}.read-progress{position:fixed;top:0;left:0;width:0;height:3px;background:var(--blue);z-index:40}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
main{max-width:1190px;margin:auto;padding:0 24px}.hero{padding:65px 0 50px}.kicker{font-size:12px;text-transform:uppercase;font-weight:800;letter-spacing:.12em;color:var(--blue)}.hero h1{max-width:1050px}.hero h1 em{font-style:normal;color:var(--blue)}.lead{font-size:20px;color:var(--muted);max-width:930px;line-height:1.6}.badges,.downloads,.controls{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:20px 0}.badge{font-size:12px;padding:5px 12px;background:#e5efff;border:1px solid var(--line);border-radius:99px;font-weight:800}.course-title{max-width:980px;padding:16px 20px;border-left:4px solid var(--blue);background:#ffffffaa;border-radius:0 12px 12px 0;font-size:16px}.course-title strong{display:block;color:var(--navy)}
.hero-flow,.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:24px 0}.glass{background:linear-gradient(135deg,#fff 5%,#edf5ffe8);border:1px solid #c6d8f5;border-radius:var(--radius);box-shadow:inset 0 2px 0 #fff,0 12px 35px #0020600a;padding:24px;min-width:0}.glass .big{font-size:37px;font-weight:850;color:var(--blue);display:block;line-height:1.2}.glass p{font-size:15px;margin-bottom:0}.icon{width:44px;height:44px;padding:9px;background:#deebff;border-radius:12px;color:var(--blue);margin-bottom:10px}.icon svg{width:100%;height:100%;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.section{padding:52px 0;border-top:1px solid var(--line)}.section-head{display:flex;gap:18px;align-items:flex-start}.section-num{background:linear-gradient(140deg,#002060,#0047ff);color:white;border-radius:14px;width:48px;height:48px;display:grid;place-items:center;flex-shrink:0;font-weight:800;box-shadow:0 8px 22px #0047ff25}.section-head .lead{font-size:18px}.why{border-left:4px solid var(--blue);padding:15px 22px;background:#eaf2ff;border-radius:0 12px 12px 0;margin:20px 0}.why p{margin:5px 0;font-size:16px}.explain{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:23px 26px;margin:18px 0}.explain h3{border-left:4px solid var(--blue);padding-left:12px}.check{background:#edf8f2;border:1px solid #b8d9cc;border-left:4px solid var(--green);border-radius:12px;padding:18px 22px;margin:20px 0}.check p{margin:6px 0}.notice{background:#fff8ee;border:1px solid #f0cb98;border-left:4px solid var(--orange);border-radius:12px;padding:18px 22px;margin:20px 0}.prompt{background:#12213b;color:#f2f6ff;border-radius:14px;overflow:hidden;margin:18px 0;border:1px solid #1e365d}.prompt-head{background:#233552;padding:12px 18px;display:flex;justify-content:space-between;align-items:center;gap:14px;font-size:15px}.prompt-head button{font-size:13px;padding:7px 13px;background:#31496e;color:#fff;border-color:#6b83a7}.prompt pre{white-space:pre-wrap;overflow-wrap:anywhere;font-family:inherit;font-size:15px;line-height:1.65;padding:20px 23px;margin:0}.task-text{white-space:pre-wrap;overflow-wrap:anywhere;font-size:16px;background:#f1f5fc;padding:20px;border-radius:12px}.downloads a{font-size:14px}.downloads{margin:18px 0}.steps{padding-left:25px}.steps li{padding-left:6px}
details{margin:15px 0;border:1px solid var(--line);border-radius:13px;background:white;padding:0 20px}summary{font-weight:720;color:var(--navy);cursor:pointer;padding:16px 0;line-height:1.45}details[open]>summary{border-bottom:1px solid var(--line);margin-bottom:16px}details>div{padding-bottom:15px}.stage-check{font-size:14px;display:flex;gap:10px;align-items:center;margin-top:24px}.stage-check input{width:20px;height:20px;accent-color:var(--blue)}.quiz{padding:22px;border:1px solid var(--line);border-radius:14px;background:#fff;margin:20px 0}.feedback{padding:14px 18px;background:#e5efff;border-radius:10px;margin-top:16px}.feedback:empty{display:none}.table-scroll{overflow-x:auto;max-width:100%;margin:20px 0;border:1px solid var(--line);border-radius:12px}table{border-collapse:collapse;width:100%;font-size:15px;background:white}th{text-align:left;background:#e5efff;color:var(--navy);padding:14px;font-size:14px}td{padding:14px;border-top:1px solid #dce5f5;vertical-align:top}td a{overflow-wrap:anywhere}caption{text-align:left;padding:12px;font-weight:700}.viz{border:1px solid #bfd1f4;border-radius:18px;padding:26px;background:linear-gradient(125deg,#fff,#edf5ff);box-shadow:0 8px 30px #0020600a;margin:26px 0}.viz>h3{margin-top:0}.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.field{display:flex;flex-direction:column;font-size:15px;gap:6px}.field input,.field select,.matrix select{border:1px solid #a8bddd;border-radius:8px;padding:10px;background:#fff;max-width:100%;color:var(--ink)}.metric{font-size:32px;font-weight:850;color:var(--blue)}.calc-line{border-bottom:1px solid #dbe5f7;padding:8px 0}.diagram{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.node{border:1px solid #b7ccee;padding:18px;border-radius:14px;background:#fff;transition:background .2s,box-shadow .2s;min-width:0}.node b{color:var(--blue);font-size:21px;display:block}.node.active{background:#dceaff;box-shadow:inset 0 0 0 2px var(--blue)}.route-note{min-height:65px;margin-top:15px}.horizontal-bar{height:14px;background:#d6e4fa;border-radius:7px;margin:8px 0;overflow:hidden}.horizontal-bar span{display:block;height:100%;background:var(--blue);border-radius:7px}.label-demo{padding:24px;background:#fff;border:2px solid var(--navy);max-width:660px;border-radius:18px;margin:20px auto}.label-demo h3{font-size:26px}.label-fields{display:grid;grid-template-columns:1fr 1fr;gap:12px}.label-fields div{background:var(--pale);padding:12px;border-radius:10px}.label-fields strong{display:block;font-size:25px}.label-demo small{display:block;margin-top:18px}.generated-slide{display:block;width:100%;height:auto;border-radius:16px;box-shadow:0 14px 40px #0020601a;margin:28px 0}
.deck-screen{min-height:350px;background:#fff;border:1px solid #a9c2ed;border-radius:18px;padding:30px;position:relative;box-shadow:0 12px 30px #00206010}.deck-screen h3{font-size:clamp(23px,3vw,37px);margin:10px 0 24px;max-width:900px}.deck-content{font-size:clamp(18px,2.2vw,26px);font-weight:600;line-height:1.5;max-width:900px}.deck-source{font-size:13px;color:var(--muted);margin-top:28px}.deck-visual{margin-top:22px;display:flex;gap:12px;flex-wrap:wrap}.deck-visual span{padding:13px 18px;background:var(--pale);border-left:3px solid var(--blue);border-radius:8px;font-size:16px}.filter{width:100%;padding:13px 16px;border:1px solid #a7bcdd;border-radius:12px;background:#fff;margin:15px 0}.template .when{color:var(--muted)}.search-count{font-size:14px;color:var(--muted)}.footer{background:var(--navy);color:#fff;padding:30px max(24px,calc((100vw - 1142px)/2));margin-top:40px;display:flex;justify-content:space-between;gap:25px}.footer strong{display:block}.footer small{color:#c1d6ff}.teacher-header{padding:40px 0}.teacher-actions{background:#eaf2ff;padding:22px;border-radius:14px}.teacher-only{border-left:4px solid #ff8901}.large{font-size:20px}.large .prompt pre,.large table{font-size:18px}.source-item{margin-bottom:24px}.source-item h3{font-size:18px}.source-item p{font-size:15px;margin:5px 0}.progress-count{font-size:13px;color:var(--muted)}.toc a{display:block;margin:8px 0}.print-note{display:none}
@media(max-width:800px){main{padding:0 17px}.top{gap:8px;padding:10px 15px}.top nav{order:3;flex-basis:100%;font-size:12px}.top button{margin-left:auto}.hero{padding:35px 0}.hero-flow,.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.grid2{grid-template-columns:1fr}.diagram{grid-template-columns:repeat(2,minmax(0,1fr))}.section{padding:36px 0}.section-head{gap:12px}.section-num{width:37px;height:37px;font-size:14px}.viz{padding:18px}.glass{padding:18px}.prompt pre{padding:16px;font-size:14px}.explain{padding:18px}.deck-screen{padding:22px}.footer{flex-direction:column}table{min-width:560px}.matrix{min-width:630px}}
@media(max-width:420px){.hero-flow{grid-template-columns:1fr 1fr;gap:8px}.glass{padding:15px}.glass h3{font-size:17px}.diagram{grid-template-columns:1fr}.label-fields{grid-template-columns:1fr 1fr}.label-demo{padding:15px}.lead{font-size:18px}h1{font-size:31px}.prompt-head{font-size:13px}.prompt-head button{font-size:12px;padding:7px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
@media print{.top,.read-progress,.controls,button,.stage-check,.filter,.search-count{display:none!important}.section{break-before:auto;padding:25px 0}.hero{padding:0}body{background:#fff}.prompt{background:#f5f6fa;color:#111;border:1px solid #aaa}.prompt-head{background:#eee}main{max-width:100%;padding:0}.footer{background:white;color:black}.print-note{display:block}.quiz{break-inside:avoid}.generated-slide{max-height:500px;object-fit:contain}.table-scroll{overflow:visible}table{min-width:0!important}}