:root{--navy:#082d42;--deep:#062537;--teal:#79e4d8;--yellow:#ffd562;--white:#f2f8f4;--muted:#b0cbd2;--line:#315366;--ink:#092e42;--danger:#ffb5a7;font-family:"Trebuchet MS",Arial,sans-serif;color:var(--white);background:var(--navy);font-synthesis:none;color-scheme:dark}
*{box-sizing:border-box}body{margin:0;min-height:100svh;display:flex;flex-direction:column;background:radial-gradient(ellipse at 90% 35%,#104854 0,transparent 50%),var(--navy)}button,a,input{-webkit-tap-highlight-color:transparent}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:default}a{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--yellow);outline-offset:5px}[hidden]{display:none!important}h1,h2,p{margin:0}h1:focus,h2:focus{outline:none}main{width:100%;flex:1}.masthead{max-width:1280px;width:100%;margin:auto;padding:12px 48px;display:flex;align-items:center;gap:32px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;font-weight:900;letter-spacing:2px;font-size:25px;text-decoration:none}.brand-logo{display:block;width:152px;height:86px;object-fit:contain}.header-note{font-size:13px;color:var(--muted)}.edition{margin-left:auto;border:1px solid var(--line);padding:9px 14px;border-radius:30px;font-size:12px;color:var(--teal)}.intro{max-width:1184px;margin:auto;padding:54px 0 32px;display:grid;grid-template-columns:1fr 1fr;position:relative}.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:14px;color:var(--teal);font-weight:700}.signal-dot{width:7px;height:7px;background:var(--teal);border-radius:50%}.intro h1{font-family:"Arial Black","Trebuchet MS",sans-serif;font-size:clamp(48px,5.8vw,78px);font-weight:900;line-height:.99;letter-spacing:-3.5px;margin:24px 0}.crossed{position:relative;color:#a5bfc7;font-size:1em;display:inline-block}.crossed:after{content:"";position:absolute;left:-4%;right:-4%;top:51%;height:5px;background:var(--yellow);transform:rotate(-8deg)}.phishing-word{color:var(--yellow)}.lead{color:#d1e3e6;font-size:19px;line-height:1.55}.button{border:0;min-height:56px;border-radius:12px;padding:16px 24px;font-size:17px;font-weight:800;display:inline-flex;justify-content:space-between;align-items:center;gap:36px;transition:background .15s,transform .15s}.primary{background:var(--yellow);color:var(--ink);box-shadow:0 4px 0 #ba9134}.primary:hover:not(:disabled){background:#ffe191;transform:translateY(-1px)}.primary:active:not(:disabled){transform:translateY(2px);box-shadow:0 2px 0 #ba9134}.primary:disabled{background:#476070;color:#b9cbd1;box-shadow:none}.button span{font-size:24px;line-height:1}.intro .button{margin-top:28px;min-width:282px}.intro-meta{display:flex;gap:16px;color:var(--muted);font-size:12px;margin-top:20px}.intro-meta span+span:before{content:"·";margin-right:16px;color:var(--teal)}.ocean-art{position:relative;align-self:center;min-width:0;aspect-ratio:1/1}.shark{position:relative;width:112%;margin-left:-7%;z-index:1;overflow:visible;filter:drop-shadow(0 22px 0 #031e3026)}.orbit{position:absolute;border:1px solid #457b7d55;border-radius:50%;inset:5%}.orbit-two{inset:15%;border-style:dashed;transform:rotate(20deg)}.art-label{position:absolute;color:#99c5c6;font-size:12px;font-style:italic}.label-top{top:8%;left:8%;transform:rotate(-8deg)}.label-bottom{bottom:1%;left:25%}.bait-sticker{position:absolute;right:1%;top:24%;display:flex;align-items:center;gap:8px;background:var(--yellow);color:var(--ink);font-weight:800;font-size:14px;padding:13px 18px;border-radius:9px;transform:rotate(9deg);z-index:2;box-shadow:5px 5px 0 #041e2b}.bait-sticker svg{height:33px;width:33px}.intro-explainer{grid-column:1/-1;display:flex;align-items:center;gap:18px;margin-top:44px;padding:23px 0;border-top:1px solid var(--line);max-width:790px}.intro-explainer p{color:var(--muted);font-size:14px;line-height:1.65}.intro-explainer strong{color:var(--white)}.small-hook{flex-shrink:0;border:1px solid var(--teal);color:var(--teal);border-radius:50%;width:30px;height:30px;text-align:center;line-height:28px;font-weight:bold}footer{max-width:1280px;width:100%;margin:0 auto;padding:22px 48px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:11px}.footer-divider{color:var(--teal);margin:0 9px}
.game,.result{max-width:680px;margin:0 auto;padding:44px 24px 60px}.game-top{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:14px}.difficulty{color:var(--teal);background:#174b57;padding:6px 13px;border-radius:30px;font-weight:bold}.progress{display:flex;gap:8px;margin:16px 0 30px}.progress span{height:5px;flex:1;background:var(--line);border-radius:4px}.progress span.active{background:var(--yellow)}.progress span.done{background:var(--teal)}.game h1,.result h1{font-size:clamp(30px,5vw,44px);letter-spacing:-1.4px;line-height:1.15}.scenario{margin:16px 0 22px;line-height:1.6;color:var(--muted)}.reference{border-left:3px solid var(--teal);padding:13px 18px;background:#164551;border-radius:0 8px 8px 0}.reference span{display:block;color:#c2dedd;font-size:12px;margin-bottom:6px}.reference strong{font-family:Consolas,"Liberation Mono",monospace;font-size:20px;color:var(--teal);overflow-wrap:anywhere}fieldset{border:0;padding:0;margin:26px 0 0;min-width:0}legend{font-size:14px;margin-bottom:12px;color:var(--muted)}#options{display:grid;gap:12px}.option{position:relative;display:grid;grid-template-columns:22px 1fr;gap:13px;align-items:start;padding:20px 18px;border:2px solid #486473;border-radius:12px;background:#10354a;cursor:pointer;transition:border-color .15s,background .15s;min-width:0}.option:hover{border-color:#9ac8cb}.option:has(input:checked){border-color:var(--yellow);background:#25464e}.option input{appearance:none;width:22px;height:22px;border:2px solid #90aebc;border-radius:50%;margin:0;display:grid;place-content:center}.option input:checked{border-color:var(--yellow)}.option input:checked:before{content:"";width:10px;height:10px;background:var(--yellow);border-radius:50%}.option-content{min-width:0}.option-heading{font-size:12px;color:var(--muted);display:block;margin:2px 0 10px}.url{font:16px/1.8 Consolas,"Liberation Mono",monospace;overflow-wrap:anywhere;word-break:normal;color:var(--white);display:block}.option.correct{border-color:var(--teal)}.option.incorrect{border-color:var(--danger)}.option.locked{cursor:default}.option-status{display:block;font-size:12px;font-weight:bold;margin-top:10px}.correct .option-status{color:var(--teal)}.incorrect .option-status{color:var(--danger)}mark{background:var(--teal);color:var(--ink);border-radius:3px;padding:2px 0;font-weight:700}.incorrect mark{background:var(--danger)}.simulation{font-size:12px;color:var(--muted);text-align:center;margin:18px 0 22px}.full{width:100%}.feedback{margin-top:24px;padding-top:24px;border-top:1px solid var(--line);animation:appear .2s ease-out}.feedback h2{color:var(--teal);font-size:24px;margin-bottom:12px}.feedback p{font-size:16px;line-height:1.65;color:#d4e4e8}.feedback .takeaway{margin:14px 0 24px;padding-left:14px;border-left:3px solid var(--yellow);color:var(--white)}.result{text-align:center}.score-medal{display:flex;flex-direction:column;justify-content:center;border:2px solid var(--teal);border-radius:50%;width:150px;height:150px;margin:26px auto;background:#174b57;box-shadow:0 0 0 8px #174b5744;color:var(--teal)}#score{font-size:48px;letter-spacing:-3px;font-weight:900}.score-medal>span:last-child{font-size:14px}.result .lead{font-size:17px;margin:16px 0 28px}.tips{text-align:left;border-top:1px solid var(--line);padding:24px 0}.tips h2{font-size:19px}.tips ol{padding:0;list-style:none;counter-reset:tips;display:grid;gap:18px;margin:24px 0}.tips li{counter-increment:tips;position:relative;padding-left:40px;line-height:1.5}.tips li:before{content:counter(tips);position:absolute;left:0;top:0;border:1px solid var(--line);color:var(--teal);width:26px;height:26px;display:grid;place-items:center;border-radius:50%;font-size:13px}.tips li strong,.tips li span{display:block}.tips li span,.tips>p{font-size:14px;color:var(--muted);line-height:1.6}.tips>p{background:#164551;padding:15px;border-radius:8px}.stand-note{font-size:13px;line-height:1.6;color:var(--muted);margin-top:24px}noscript{display:block;text-align:center;padding:24px;color:var(--yellow)}@keyframes appear{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
@media(min-width:1500px){.intro{padding-top:70px;padding-bottom:45px}.intro h1{font-size:84px}}
@media(max-width:1279px){.intro{margin:0 48px}.intro h1{font-size:clamp(48px,6.3vw,76px)}}
@media(max-width:760px){.masthead{padding:6px 24px;gap:12px}.brand-logo{width:126px;height:72px}.header-note{display:none}.brand{font-size:21px}.brand svg{width:28px}.edition{font-size:10px;padding:8px 10px}.intro{margin:0;padding:30px 24px 15px;grid-template-columns:1fr}.intro-copy{position:relative;z-index:2}.intro h1{font-size:clamp(48px,10vw,66px);letter-spacing:-2.5px;max-width:400px}.intro .lead{font-size:17px;max-width:65%}.intro .button{margin-top:26px;width:100%}.intro-meta{justify-content:center;font-size:11px;gap:12px}.intro-meta span+span:before{margin-right:12px}.ocean-art{position:absolute;right:0;top:145px;width:46%;pointer-events:none;opacity:.95}.bait-sticker,.art-label,.orbit{display:none}.shark{width:120%;margin-left:-10%}.intro-explainer{margin-top:28px;gap:13px;padding:20px 0}.intro-explainer p{font-size:13px}.small-hook{align-self:flex-start;margin-top:4px}footer{padding:20px 24px;font-size:10px}footer>span:last-child{display:none}.game,.result{padding-top:28px}.url{font-size:15px}.option{padding:17px 14px;gap:11px}}
@media(max-width:380px){.masthead{padding:6px 16px}.brand-logo{width:112px;height:64px}.edition{font-size:9px}.intro{padding-left:18px;padding-right:18px}.intro h1{font-size:48px}.ocean-art{top:160px;width:42%}.intro .lead{max-width:78%;font-size:15px}.game,.result{padding-left:16px;padding-right:16px}.intro-meta{gap:8px;font-size:10px}.intro-meta span+span:before{margin-right:8px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

.message{margin:0 0 22px;padding:18px 20px;background:#edf5ee;color:var(--ink);border-radius:14px 14px 14px 2px;font-size:16px;line-height:1.6}.inspect-panel{margin-top:22px;font-size:14px;color:var(--muted);line-height:1.6}.secondary{background:transparent;color:var(--teal);border:1px solid var(--teal);margin-top:14px;font-size:15px}.secondary:hover{background:#164551}.secondary:disabled{opacity:.7}.display-link{display:block;width:100%;min-height:44px;padding:4px 0;border:0;background:transparent;color:var(--teal);text-decoration:underline;text-align:left;overflow-wrap:anywhere;font:inherit;font-family:Consolas,"Liberation Mono",monospace;font-size:15px;line-height:1.8;cursor:text;-webkit-user-select:text;user-select:text;-webkit-touch-callout:default}.display-link:hover{color:#b5fff3}.option:has(input:disabled):not(.locked){cursor:default}.feedback .technique{color:var(--yellow);font-size:14px;font-weight:bold;margin-bottom:12px}

@media(max-width:760px){.ocean-art{top:250px;right:18px;width:43%}.shark{width:100%;margin-left:0}.intro .lead{max-width:57%;min-height:140px}}
@media(max-width:380px){.ocean-art{top:265px;right:12px;width:42%}.intro .lead{max-width:58%;min-height:130px}}

/* Copy controls are siblings of the radio label, not nested interactive controls. */
.option{display:block}.choice-label{display:grid;grid-template-columns:22px minmax(0,1fr);gap:13px;cursor:inherit}.copy-controls{margin-top:8px}.copy-status{color:var(--muted);font-size:13px;line-height:1.6;margin-top:10px}.copy-status:empty{display:none}.inspect-panel ol{padding-left:22px}.inspect-panel li{margin:8px 0}#copy-progress{color:var(--teal);margin-top:12px}

/* A warmer background at each level; feedback colors keep their own meaning. */
body{transition:background-color .45s ease}
body[data-level="1"]{--level-bg:#103d30;--level-accent:#98edb0;--level-badge:#22583b}
body[data-level="2"]{--level-bg:#303e1b;--level-accent:#d0e78d;--level-badge:#475626}
body[data-level="3"]{--level-bg:#453a17;--level-accent:#ffe083;--level-badge:#63521d}
body[data-level="4"]{--level-bg:#4c2c1b;--level-accent:#ffb67f;--level-badge:#6b3b22}
body[data-level="5"]{--level-bg:#4a2029;--level-accent:#ffaaa6;--level-badge:#692e36}
body[data-level]{background-color:var(--level-bg);background-image:radial-gradient(ellipse at 90% 20%,#ffffff09,transparent 65%);--line:#ffffff30;--muted:#d1d9d6}
body[data-level] .difficulty{color:var(--level-accent);background:var(--level-badge)}
body[data-level] .progress span.active{background:var(--level-accent)}
body[data-level] .reference{background:#071f2b80}
body[data-level] .option{background:#0a2638e8}
body[data-level] .option:has(input:checked){background:#25414a}


.sound-toggle{flex-shrink:0;min-height:44px;border:1px solid var(--line);border-radius:24px;background:#092e4280;color:var(--white);font-size:12px;padding:10px 14px}
.sound-toggle[aria-pressed="false"]{color:var(--muted)}
body[data-answer-effect]::after{content:"";position:fixed;inset:0;z-index:10;pointer-events:none;box-shadow:inset 0 0 90px 16px var(--effect-color);animation:answer-glow .8s ease-out both}
body[data-answer-effect="correct"]{--effect-color:#58e39160}
body[data-answer-effect="wrong"]{--effect-color:#ff6b6b50}
.feedback[data-outcome="correct"]{border-top-color:#98edb0;animation:answer-pop .35s ease-out}
.feedback[data-outcome="wrong"]{border-top-color:#ffaaa6;animation:answer-shake .32s ease-out}
.feedback[data-outcome="correct"] h2{color:#98edb0}
.feedback[data-outcome="wrong"] h2{color:#ffaaa6}
.feedback[data-outcome] h2::before{display:inline-grid;place-items:center;width:32px;height:32px;margin-right:10px;border:2px solid currentColor;border-radius:50%;font-size:22px;vertical-align:middle}
.feedback[data-outcome="correct"] h2::before{content:"✓"}
.feedback[data-outcome="wrong"] h2::before{content:"×"}
@keyframes answer-glow{0%{opacity:0}22%{opacity:1}100%{opacity:0}}
@keyframes answer-pop{0%{transform:scale(.98);opacity:.65}65%{transform:scale(1.01)}100%{transform:scale(1);opacity:1}}
@keyframes answer-shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-4px)}50%{transform:translateX(4px)}75%{transform:translateX(-2px)}}
@media(max-width:760px){.masthead{gap:12px}.edition{display:none}.sound-toggle{margin-left:auto}}
@media(prefers-reduced-motion:reduce){body[data-answer-effect]::after{display:none}}

.confetti-layer{position:fixed;inset:0;overflow:hidden;pointer-events:none;z-index:11;contain:strict}
.confetti-piece{position:absolute;width:8px;height:13px;border-radius:2px;opacity:0;animation:confetti-flight 1.8s linear both}
.confetti-piece:nth-child(3n){width:7px;height:7px;border-radius:50%}
@keyframes confetti-flight{
  0%{opacity:0;transform:translate(0,0) rotate(0)}
  8%{opacity:1}
  40%{opacity:1;transform:translate(calc(var(--drift)*.65),var(--rise)) rotate(calc(var(--spin)*.4))}
  65%{opacity:1;transform:translate(calc(var(--drift)*.85),calc(var(--rise)*.55)) rotate(calc(var(--spin)*.65))}
  100%{opacity:0;transform:translate(var(--drift),var(--fall)) rotate(var(--spin))}
}
@media(prefers-reduced-motion:reduce){.confetti-layer{display:none}}

@media(max-width:760px){.ocean-art{top:252px;right:8px;width:54%}.shark{width:100%;margin-left:0}.intro .lead{max-width:49%;min-height:150px}}
@media(max-width:380px){.ocean-art{top:265px;right:6px;width:53%}.intro .lead{max-width:49%;min-height:145px}}

.page-loader{position:fixed;inset:0;z-index:100;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;padding:24px;background:radial-gradient(ellipse at 50% 42%,#104854 0,transparent 48%),#082d42;transition:opacity .32s ease,visibility .32s ease}
.page-loader.is-done{opacity:0;visibility:hidden;pointer-events:none}
.loader-logo{display:block;width:min(220px,62vw);height:auto;max-height:125px;object-fit:contain}
.page-loader>p{font-size:17px;font-weight:700;color:var(--white);letter-spacing:.2px}
.loader-track{width:min(170px,48vw);height:4px;overflow:hidden;border-radius:4px;background:#315366}
.loader-track span{display:block;width:42%;height:100%;border-radius:inherit;background:var(--yellow);animation:loader-sweep .85s ease-in-out infinite alternate}
.loader-hint{margin-top:3px;color:var(--muted);font-size:12px;text-align:center}
@keyframes loader-sweep{from{transform:translateX(-5%)}to{transform:translateX(145%)}}
@media(prefers-reduced-motion:reduce){.page-loader,.loader-track span{transition:none;animation:none}.loader-track span{width:100%}}

@media(max-width:760px){.bait-sticker{display:flex;right:-2px;top:-35%;gap:5px;padding:8px 10px;font-size:11px;transform:rotate(6deg)}.bait-sticker svg{width:25px;height:25px}}
@media(max-width:380px){.bait-sticker{right:-1px;top:-38%;padding:7px 8px;font-size:10px}.bait-sticker svg{width:22px;height:22px}}

.display-link:focus-visible{outline:3px solid var(--yellow);outline-offset:3px;border-radius:4px}