/* Learn with Tayo: Marine Biology. Calm ocean theme (v2). */
@font-face{font-family:"Alegreya";src:url("fonts/alegreya.woff") format("woff");font-weight:400 900;font-style:normal;font-display:swap}
@font-face{font-family:"Alegreya";src:url("fonts/alegreya-italic.woff") format("woff");font-weight:400 900;font-style:italic;font-display:swap}
@font-face{font-family:"Nunito Sans";src:url("fonts/nunitosans.woff") format("woff");font-weight:200 1000;font-style:normal;font-display:swap}
@font-face{font-family:"Nunito Sans";src:url("fonts/nunitosans-italic.woff") format("woff");font-weight:200 1000;font-style:italic;font-display:swap}
/* aliases so the Week 2 markup keeps working */
@font-face{font-family:"Fredoka";src:url("fonts/alegreya.woff") format("woff");font-weight:400 900;font-display:swap}
@font-face{font-family:"NunitoT";src:url("fonts/nunitosans.woff") format("woff");font-weight:200 1000;font-display:swap}
:root{
 --ink:#17283a;--navy:#12304d;--navy2:#0d2438;--sea:#1d7a93;--sea2:#7fc0d0;--teal:#1f7f84;--foam:#eaf3f5;
 --paper:#f6f3ec;--card:#fff;--line:#d8dfe1;--mute:#5b6d7a;
 --copper:#b45f33;--gold:#c99a3a;--gold2:#e8c777;--good:#2c7a4b;--bad:#b0432f;
 /* legacy names used by the Week 2 markup */
 --orange:var(--copper);--orange2:var(--copper);--red:var(--bad);--deep:#0d2438;--brown:var(--mute);--cream:#fff;--sand:var(--paper)
}
*{box-sizing:border-box}
html{background:var(--paper)}
body{margin:0;font-family:"Nunito Sans","NunitoT",system-ui,sans-serif;color:var(--ink);line-height:1.6;font-size:17px;background:var(--paper);min-height:100vh;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,.fred{font-family:"Alegreya",Georgia,serif;font-weight:700;margin:0;letter-spacing:0}
a{color:var(--sea)}
p{margin:.55em 0}
.band{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:16px;padding:8px 22px}
.band .logo{display:flex}.band .logo img{height:40px;display:block}
.band .brand{font-family:"Alegreya";font-size:22px;font-weight:700;line-height:1.05;color:var(--navy);padding-left:16px;border-left:1px solid var(--line)}
.band .brand small{display:block;font:700 11px "Nunito Sans";color:var(--sea);letter-spacing:.14em;text-transform:uppercase;margin-top:2px}
.band nav{margin-left:auto;display:flex;gap:2px;flex-wrap:wrap}
.band nav a{color:var(--navy);text-decoration:none;padding:7px 12px;border-radius:7px;font-weight:700;font-size:14.5px}
.band nav a:hover{background:var(--foam)}.band nav a.on{background:var(--navy);color:#fff}
.wrap{max-width:1360px;margin:0 auto;padding:34px 20px 60px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;box-shadow:0 1px 2px #12304d0d,0 6px 18px #12304d0a;padding:20px 24px}
.tag{display:inline-block;color:var(--sea);font-weight:800;font-size:12.5px;letter-spacing:.14em;text-transform:uppercase}
.btn{display:inline-block;border:1px solid var(--navy);cursor:pointer;background:var(--navy);color:#fff;font:700 15px "Nunito Sans",sans-serif;padding:10px 20px;border-radius:8px;text-decoration:none;transition:background .15s}
.btn:hover{background:#1c4a72}.btn.alt{background:var(--sea);border-color:var(--sea)}.btn.alt:hover{background:#176579}
.btn.ghost{background:#fff;color:var(--navy)}.btn.ghost:hover{background:var(--foam)}
.btn[disabled]{opacity:.4;cursor:default}
.say{display:flex;gap:14px;align-items:flex-start}
.say .av{flex:0 0 58px;width:58px;height:58px;border-radius:50%;border:2px solid var(--sea2);background:#2a9aa5 center/cover;object-fit:cover}
.say .bub{position:relative;background:var(--foam);border:1px solid #c9dde2;border-radius:12px;padding:11px 18px;flex:1}
.say .bub::before{content:"";position:absolute;left:-7px;top:22px;width:12px;height:12px;background:var(--foam);border-left:1px solid #c9dde2;border-bottom:1px solid #c9dde2;transform:rotate(45deg)}
.say .bub b.who{display:block;font:800 11.5px "Nunito Sans";color:var(--sea);letter-spacing:.14em;text-transform:uppercase;margin-bottom:1px}
.say .bub p{margin:.3em 0}.say .bub h3{font-size:23px;color:var(--navy);margin:.1em 0 .1em}
.dyk{background:#fbf6e8;border:1px solid #ecdcb2;border-left:4px solid var(--gold);border-radius:10px;padding:11px 18px}
.dyk h4{margin:0 0 4px;font:italic 700 20px "Alegreya";color:#8a6513}
.dyk ul{margin:0;padding-left:20px}.dyk li{margin:3px 0}
.stretch{border:1px solid #bfdcdc;border-left:4px solid var(--teal);background:#eef7f7;border-radius:10px;padding:10px 16px;font-size:16px}
.stretch>b:first-child{color:var(--teal);font:800 11.5px "Nunito Sans";letter-spacing:.14em;text-transform:uppercase}
footer.foot{background:var(--navy);color:#cfe3ea;text-align:center;padding:14px;font-weight:700;font-size:14px;letter-spacing:.03em}
.dykplay{display:inline-flex;align-items:center;gap:6px;vertical-align:middle;margin-left:10px;border:1px solid #c9ac5c;background:#fff;color:#7a5a12;border-radius:99px;padding:2px 11px 2px 8px;font:800 12.5px "Nunito Sans";cursor:pointer;line-height:1.3;font-style:normal}
.dykplay:hover,.dykplay.on{background:#7a5a12;color:#fff}
/* lesson layout */
.lw{max-width:1100px;margin:0 auto;padding:30px 20px 40px}
.top{display:flex;justify-content:space-between;align-items:flex-end;gap:14px;flex-wrap:wrap}
.top h1{font-size:clamp(30px,4vw,44px);color:var(--navy);line-height:1.05;margin-top:4px}
.meta{color:var(--mute);font-weight:600;font-size:14.5px}
.stepper{display:flex;gap:6px;margin:20px 0 10px;flex-wrap:wrap}
.stepper button{flex:1 1 90px;min-width:90px;cursor:pointer;background:#fff;border:1px solid var(--line);border-radius:8px;padding:7px 6px 6px;font:700 12.5px "Nunito Sans";color:var(--navy);text-align:center;line-height:1.2}
.stepper button b{display:block;font:700 18px "Alegreya";color:var(--mute)}
.stepper button.done{background:var(--foam);border-color:#b7d6dc}.stepper button.done b{color:var(--teal)}
.stepper button.cur{background:var(--navy);color:#fff;border-color:var(--navy)}.stepper button.cur b{color:var(--gold2)}
.prog{height:5px;background:#e3e8ea;border-radius:99px;overflow:hidden;margin-bottom:22px}
.prog i{display:block;height:100%;background:var(--sea);width:0;transition:width .4s}
.step{display:none;animation:in .35s ease}.step.on{display:block}
@keyframes in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
@media(prefers-reduced-motion:reduce){.step{animation:none}}
.step h2{font-size:clamp(26px,3vw,34px);color:var(--navy);margin-bottom:12px}
.two{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:20px;align-items:start}
.two.even{grid-template-columns:1fr 1fr}
.stack{display:flex;flex-direction:column;gap:16px}
.goals{margin:0;padding-left:22px}.goals li{margin:3px 0}
.opts{display:grid;gap:9px;margin-top:12px}
.opt{display:block;width:100%;text-align:left;border:1px solid #b9c7cd;background:#fff;border-radius:9px;padding:10px 16px;font:600 16.5px "Nunito Sans";color:var(--ink);cursor:pointer}
.opt:hover:not([disabled]){background:var(--foam);border-color:var(--sea)}
.opt.ok{background:#e3f3e8;border-color:var(--good)}.opt.no{background:#fbe6e1;border-color:var(--bad)}
.opt[disabled]{cursor:default}
.fb{margin-top:10px;padding:10px 14px;border-radius:9px;font-weight:600;display:none}
.fb.show{display:block}.fb.ok{background:#e3f3e8;border:1px solid var(--good)}.fb.no{background:#fbe6e1;border:1px solid var(--bad)}
.nav{display:flex;justify-content:space-between;gap:12px;margin-top:24px;align-items:center}
.threecards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:6px}
.tc{background:#fff;border:1px solid var(--line);border-top:3px solid var(--sea);border-radius:10px;padding:14px 16px}
.tc h3{font-size:21px;color:var(--navy);margin-bottom:4px}.tc p{margin:.3em 0;font-size:16px}
.tc .ico{width:40px;height:40px;border-radius:9px;background:var(--foam);display:flex;align-items:center;justify-content:center;margin-bottom:8px}
.lightbar2{height:22px;border-radius:6px;background:linear-gradient(90deg,#c8453a 0 18%,#d98a2b 18% 36%,#d8c43a 36% 54%,#3f9b5e 54% 72%,#3a6fc0 72%);position:relative;margin:8px 0 4px}
.calc{background:var(--navy2);color:#fff;border-radius:12px;padding:16px 20px;margin-top:16px}
.calc output{font:700 34px "Alegreya";color:var(--gold2)}
input[type=range]{-webkit-appearance:none;appearance:none;height:10px;border-radius:99px;background:linear-gradient(90deg,#7fc0d0,#2c7fb8 25%,#1b4a86 50%,#0f2a55 75%,#070f26);outline:none;border:1px solid #fff6}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:24px;height:24px;border-radius:50%;background:#fff;border:3px solid var(--copper);cursor:grab}
input[type=range]::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:#fff;border:3px solid var(--copper);cursor:grab}
.octowrap{background:linear-gradient(180deg,#dcedf1,#b6d9e2 62%,#d9ccaa);border-radius:12px;border:1px solid #b8cfd6;padding:8px}
.octowrap svg{width:100%;height:auto;display:block}
.opin{cursor:pointer}.opin:focus{outline:none}.opin:hover .pr,.opin:focus .pr,.opin.sel .pr{fill:var(--navy);stroke:var(--gold2)}
.plist{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.pb{border:1px solid #aebfc6;background:#fff;border-radius:99px;padding:3px 12px;font:700 13.5px "Nunito Sans";cursor:pointer;color:var(--navy)}
.pb.sel,.pb:hover{background:var(--navy);color:#fff;border-color:var(--navy)}
.partcard h3{font-size:24px;color:var(--navy)}
.tricks{align-items:start;display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.trick{display:block;width:100%;background:#fff;border:1px solid var(--line);border-radius:10px;padding:0;overflow:hidden;cursor:pointer;text-align:left;font:inherit;color:inherit}
.trick .hd{background:var(--navy);color:#fff;padding:8px 16px;font:700 20px "Alegreya";display:flex;justify-content:space-between;align-items:center}
.trick .hd small{font:800 11px "Nunito Sans";letter-spacing:.12em;text-transform:uppercase;color:var(--gold2)}
.trick .bd{padding:10px 16px;font-size:16px}.trick .tap{color:var(--sea);font-weight:800;font-size:14px}
.trick .more{display:none}.trick.open .more{display:block}
.video{border:1px dashed #8fb9bc;border-radius:12px;background:#f1f8f8;padding:16px 22px;display:flex;gap:16px;align-items:center}
.video .play{flex:0 0 60px;height:60px;border-radius:50%;background:var(--teal);display:flex;align-items:center;justify-content:center;opacity:.75}
.qprog{display:flex;gap:6px;margin-bottom:12px}.qprog i{flex:1;height:6px;border-radius:9px;background:#e3e8ea}.qprog i.on{background:var(--gold)}.qprog i.ok{background:var(--good)}.qprog i.no{background:var(--bad)}
.qq{font:700 25px "Alegreya";color:var(--navy);margin:6px 0 4px;line-height:1.25}
.score{font:700 56px "Alegreya";color:var(--navy);line-height:1}
.log{display:grid;grid-template-columns:1.2fr 1fr;gap:20px}
.log ul{list-style:none;padding:0;margin:0}.log li{padding:8px 0 8px 34px;position:relative;border-bottom:1px solid #e3e8ea}
.log li::before{content:"";position:absolute;left:3px;top:11px;width:19px;height:19px;border-radius:5px;border:2px solid var(--teal);background:#eaf5f5}
.log li::after{content:"";position:absolute;left:9px;top:14px;width:5px;height:10px;border:solid var(--teal);border-width:0 2px 2px 0;transform:rotate(40deg)}
.stamp{width:190px;height:190px;margin:0 auto;border-radius:50%;border:3px double var(--copper);display:flex;align-items:center;justify-content:center;text-align:center;color:var(--copper);font:700 24px "Alegreya";line-height:1.1;background:#fffaf3;outline:1px solid #e3c2ad;outline-offset:3px}
.stamp small{display:block;font:800 11px "Nunito Sans";letter-spacing:.14em;color:var(--navy)}
.cert{border:2px solid var(--gold);outline:1px solid var(--gold);outline-offset:5px;background:#fffdf6;border-radius:6px;text-align:center;padding:22px 18px}
.cert h3{font-size:30px;color:var(--navy)}.cert .nm{font:italic 700 28px "Alegreya";border-bottom:1px solid var(--navy);display:inline-block;min-width:240px;margin:10px 0}
.seab svg{width:100%;height:auto;display:block;border-radius:10px;border:1px solid #b8cfd6}
.flist{display:grid;grid-template-columns:repeat(4,1fr);gap:8px 18px;margin-top:12px;padding:0;list-style:none}
.flist li{display:flex;gap:10px;align-items:flex-start}
.flist b.n{flex:0 0 26px;height:26px;border-radius:50%;background:var(--navy);color:#fff;font:700 14px "Alegreya";display:flex;align-items:center;justify-content:center}
.flist span{font-size:15.5px;line-height:1.35}
.zonewrap{display:grid;grid-template-columns:280px minmax(0,1fr);gap:20px}
.zcol{position:relative}.zcol svg{width:100%;height:auto;display:block;border-radius:10px;border:1px solid #b8cfd6}
.zb{cursor:pointer}.zb:hover rect.bg{filter:brightness(1.12)}.zb.sel rect.bg{stroke:#e8c777;stroke-width:5}
.zdet h3{font-size:30px;color:var(--navy);line-height:1.1}
.zdet .alt{color:var(--sea);font:800 11.5px "Nunito Sans";letter-spacing:.14em;text-transform:uppercase}
.zdet dl{display:grid;grid-template-columns:110px 1fr;gap:6px 12px;margin:12px 0}.zdet dt{font-weight:800;color:var(--navy)}.zdet dd{margin:0}
/* generic components for weeks */
.fig{background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px}
.fig svg{width:100%;height:auto;display:block}
.fig figcaption,.cap{font-size:14px;color:var(--mute);padding:6px 8px 2px}
.tbl{width:100%;border-collapse:collapse;font-size:15.5px;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.tbl th{background:var(--navy);color:#fff;text-align:left;padding:8px 12px;font:700 14px "Nunito Sans"}
.tbl td{padding:8px 12px;border-top:1px solid #e6ecee;vertical-align:top}.tbl td:first-child{font-weight:800;color:var(--navy);white-space:nowrap}
.term{font-weight:800;color:var(--navy);border-bottom:2px solid #bfe0e6}
.callout{border-left:4px solid var(--sea);background:#f1f8fa;border-radius:0 10px 10px 0;padding:10px 16px}
.bigq{font:700 26px "Alegreya";color:var(--navy);line-height:1.2}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin:10px 0}
.tabs button{border:1px solid #aebfc6;background:#fff;border-radius:99px;padding:5px 14px;font:700 14px "Nunito Sans";color:var(--navy);cursor:pointer}
.tabs button.on,.tabs button:hover{background:var(--navy);color:#fff;border-color:var(--navy)}
.pill{display:inline-block;background:var(--foam);border:1px solid #c3dde3;border-radius:99px;padding:1px 10px;font-size:13px;font-weight:800;color:var(--navy)}
.sel2{font:700 15px "Nunito Sans";padding:6px 10px;border:1px solid #aebfc6;border-radius:8px;background:#fff;color:var(--navy)}
.pinrow{display:flex;flex-wrap:wrap;gap:6px}
/* map pages */
.hero{display:flex;gap:18px;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;margin-bottom:18px}
.hero h1{font-size:clamp(30px,4.5vw,46px);color:var(--navy);line-height:1.05}.hero p{margin:6px 0 0;max-width:660px;color:var(--mute)}
.mgrid{display:grid;grid-template-columns:minmax(0,1fr) 350px;gap:20px;align-items:start}
.mapcard{padding:10px;background:#fff}
.mapcard svg{width:100%;height:auto;display:block;border-radius:8px;touch-action:manipulation;background:#cfe4ea}
.maptop{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:2px 6px 10px;flex-wrap:wrap}
.maptop h2{font-size:23px;color:var(--navy)}.hint{font-size:14px;color:var(--mute);font-weight:600}
.side{display:flex;flex-direction:column;gap:16px;position:sticky;top:80px}
.read{background:var(--navy);color:#fff;border-radius:12px;padding:16px 20px}
.read .z{font:800 11.5px "Nunito Sans";letter-spacing:.14em;text-transform:uppercase;color:var(--gold2)}
.read .zn{font:700 28px "Alegreya";line-height:1.1;margin:2px 0 8px}
.read dl{display:grid;grid-template-columns:96px 1fr;gap:4px 10px;font-size:15px;margin:0}.read dt{color:#9fc7d3;font-weight:700}.read dd{margin:0;font-weight:600}
.info h3{font-size:23px;color:var(--navy);margin-bottom:4px}
.info .kind{font:800 11.5px "Nunito Sans";letter-spacing:.14em;text-transform:uppercase;color:var(--copper)}
.info p{margin:.35em 0;font-size:15.5px}
.info .say .av{flex-basis:50px;width:50px;height:50px}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.chip{border-radius:99px;background:#fff;color:var(--navy);font:700 13px "Nunito Sans";padding:4px 11px;cursor:pointer;border:1px solid #aebfc6}
.chip:hover,.chip.on{background:var(--navy);color:#fff;border-color:var(--navy)}
.pin{cursor:pointer}.pin circle.c{fill:var(--copper);stroke:#fff;stroke-width:2}.pin text{font:700 11px "Nunito Sans";fill:#fff;text-anchor:middle;pointer-events:none}
.pin:hover circle.c,.pin.sel circle.c{fill:var(--navy);stroke:var(--gold2);stroke-width:3}
.pin.seen circle.c{fill:var(--teal)}
.plabel{font:700 11.5px "Nunito Sans";fill:#14304a;paint-order:stroke;stroke:#ffffffcc;stroke-width:3px;pointer-events:none}
.below{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:20px;margin-top:22px}
.below h2{font-size:25px;color:var(--navy);margin-bottom:6px}
.passport{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:8px}
.psp{border:1px dashed #9db4bc;border-radius:8px;padding:8px;text-align:center;font-size:13.5px;color:var(--mute);min-height:64px;display:flex;align-items:center;justify-content:center;flex-direction:column}
.psp.got{border:2px solid var(--teal);color:var(--navy);background:#eef7f7;font-weight:700}.psp.got::after{content:"stamped";font:800 10px "Nunito Sans";letter-spacing:.14em;text-transform:uppercase;color:var(--teal);margin-top:2px}
.game{display:grid;gap:8px}
.drop{display:flex;gap:10px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:9px;padding:8px 12px}
.drop b{flex:1}
@media(max-width:860px){.flist{grid-template-columns:1fr 1fr}.two,.zonewrap,.log,.threecards,.tricks,.mgrid{grid-template-columns:1fr}.zcol{max-width:300px}.side{position:static}.band .brand small{display:none}.band nav a{padding:5px 8px;font-size:13px}.say .av{flex-basis:46px;width:46px;height:46px}.passport{grid-template-columns:1fr 1fr}}
@media print{.band,.nav,.stepper,.prog{display:none}.step{display:block!important}}