:root{
  --ink:#10222a;--ink-soft:#39515b;--yellow:#ffd84d;--orange:#ff9f0a;--orange-dark:#e57900;
  --cream:#fff9e9;--paper:#fff;--teal:#16b8b2;--teal-soft:#dff8f6;--line:#eadfca;
  --green:#16845b;--red:#c9463d;--shadow:0 18px 60px rgba(41,34,17,.12);--radius:28px;
}
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span{color:var(--yellow)}nav{display:flex;gap:24px}nav a{text-decoration:none;font-weight:750;color:var(--ink-soft)}nav a:hover{color:var(--orange-dark)}.hero{position:relative;overflow:hidden;background:radial-gradient(circle at 18% 20%,#fff3ae 0 16%,transparent 42%),linear-gradient(135deg,#ffd23d 0%,#ffb411 58%,#ff9514 100%);padding:74px 24px 100px}.hero-inner{max-width:1180px;margin:auto;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:60px}.eyebrow{text-transform:uppercase;letter-spacing:.13em;font-weight:900;font-size:.76rem;color:var(--orange-dark);margin:0 0 12px}.hero h1{font-size:clamp(3.3rem,8vw,6.7rem);line-height:.92;letter-spacing:-.065em;margin:0 0 26px}.hero h1 span{display:inline-block;background:#fff;border:3px solid var(--ink);border-radius:20px;padding:.08em .18em;box-shadow:8px 8px 0 var(--ink)}.hero-lead{font-size:clamp(1.08rem,2vw,1.35rem);max-width:670px;margin:0 0 30px}.hero-actions{display:flex;flex-wrap:wrap;gap:14px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 24px;border-radius:16px;border:2px solid var(--ink);font-weight:900;text-decoration:none;cursor:pointer}.btn-primary{background:var(--ink);color:#fff;box-shadow:6px 6px 0 rgba(255,255,255,.6)}.btn-primary:hover{transform:translateY(-2px)}.btn-ghost{background:rgba(255,255,255,.6)}.quick-rule{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}.quick-rule span{background:rgba(255,255,255,.72);border:1px solid rgba(16,34,42,.14);padding:9px 13px;border-radius:999px;font-size:.92rem}.hero-visual{position:relative;max-width:520px;justify-self:end}.hero-visual img{position:relative;z-index:2;border-radius:44px;box-shadow:var(--shadow);border:4px solid 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24px}.section.compact{padding-top:64px}.soft-bg{max-width:none;background:#fff2ce}.soft-bg>*{max-width:1180px;margin-left:auto;margin-right:auto}.section-head{max-width:760px;margin:0 auto 42px;text-align:center}.section-head h2,.two-col h2,.quiz-intro h2{font-size:clamp(2.2rem,5vw,4rem);line-height:1.03;letter-spacing:-.045em;margin:0 0 15px}.section-head p{font-size:1.08rem}.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.rule-card{display:grid;grid-template-columns:auto 1fr;gap:18px;padding:32px;background:#fff;border-radius:var(--radius);border:2px solid var(--ink);box-shadow:9px 9px 0 var(--ink)}.card-seid{background:var(--teal-soft)}.rule-icon{width:58px;height:58px;border-radius:18px;background:var(--yellow);display:grid;place-items:center;font-size:1.8rem}.word-chip{display:inline-flex;padding:5px 12px;background:var(--ink);color:#fff;border-radius:999px;font-weight:950;letter-spacing:.02em}.rule-card h3{font-size:1.6rem;margin:12px 0 4px}.rule-card ul{padding-left:20px;margin-bottom:0}.two-col{display:grid;grid-template-columns:1.35fr .65fr;gap:40px;align-items:center}.two-col.reverse{grid-template-columns:.65fr 1.35fr}.two-col.reverse>div{order:2}.mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.mini-card,.memory-card,.split-examples article{background:#fff;border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:0 12px 34px rgba(44,35,12,.08)}.mini-card h3{margin-top:0}.sentence{background:#f5f7f7;padding:12px 14px;border-radius:13px}.sentence mark{background:var(--yellow);padding:2px 5px;border-radius:6px;font-weight:900}.memory-card{background:var(--yellow);border:3px solid var(--ink);transform:rotate(1.5deg);box-shadow:10px 10px 0 var(--ink)}.memory-card.teal{background:var(--teal-soft);transform:rotate(-1.5deg)}.memory-badge{display:inline-block;background:var(--ink);color:#fff;padding:5px 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1fr;gap:20px}.quiz-section{position:relative;overflow:hidden;background:linear-gradient(135deg,#0f232b,#183b43);color:#fff;padding:90px 24px}.quiz-shell{max-width:1050px;margin:auto;display:grid;grid-template-columns:.72fr 1.28fr;gap:38px;align-items:start}.quiz-intro{position:sticky;top:110px}.quiz-intro .eyebrow{color:#ffbf38}.quiz-intro p{color:#cfe0e4}.quiz-stats{display:flex;flex-wrap:wrap;gap:8px}.quiz-stats span{border:1px solid rgba(255,255,255,.18);padding:7px 10px;border-radius:999px;font-size:.86rem}.quiz-card-main{background:#fff;color:var(--ink);border-radius:32px;padding:32px;box-shadow:0 28px 80px rgba(0,0,0,.28);min-height:480px}.progress-row{display:flex;justify-content:space-between;font-size:.9rem;font-weight:850}.progress-track{height:12px;background:#eaf0f1;border-radius:999px;overflow:hidden;margin:12px 0 34px}.progress-track>div{height:100%;width:0;background:linear-gradient(90deg,var(--teal),var(--yellow));transition:width .45s ease}.quiz-kicker{font-size:.83rem;text-transform:uppercase;letter-spacing:.12em;font-weight:900;color:var(--orange-dark)}#questionText{font-size:clamp(1.8rem,4vw,2.8rem);line-height:1.14;margin:8px 0 28px}.answer-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.answer-grid button{min-height:74px;border-radius:20px;border:2px solid var(--ink);background:#fff;font-size:1.35rem;font-weight:950;cursor:pointer;transition:.2s}.answer-grid button:hover:not(:disabled){transform:translateY(-3px);background:var(--yellow)}.answer-grid button.correct{background:#dff6e9;border-color:var(--green);color:var(--green)}.answer-grid button.wrong{background:#ffe8e4;border-color:var(--red);color:var(--red)}.answer-grid button:disabled{cursor:default}.feedback{min-height:66px;margin:20px 0 4px;padding:14px 16px;border-radius:16px;background:#f2f6f6;display:none}.feedback.show{display:block}.next-btn{margin-top:8px;box-shadow:none}.result-panel{text-align:center}.result-robot{position:relative;width:210px;margin:0 auto 14px}.result-robot img{position:relative;z-index:2;border-radius:30px}.success-glow{position:absolute;inset:15%;border-radius:50%;background:#ffd64f;filter:blur(28px);opacity:0}.result-panel.winner .result-robot{animation:robotCelebrate .7s ease both}.result-panel.winner .success-glow{animation:successGlow 1.2s ease-in-out infinite}.score-ring{width:112px;height:112px;border-radius:50%;display:grid;place-items:center;margin:24px auto;border:10px solid var(--yellow);background:var(--ink);color:#fff;font-size:1.45rem;font-weight:950}@keyframes robotCelebrate{30%{transform:translateY(-18px) rotate(-4deg)}60%{transform:translateY(-4px) rotate(4deg)}100%{transform:none}}@keyframes successGlow{50%{opacity:.95;transform:scale(1.24)}}#sparkLayer{position:absolute;inset:0;pointer-events:none;overflow:hidden}.spark{position:absolute;width:10px;height:10px;border-radius:50%;animation:sparkFly 1.3s ease-out forwards}@keyframes sparkFly{to{transform:translate(var(--x),var(--y)) scale(0);opacity:0}}.faq-list{max-width:850px;margin:auto;display:grid;gap:12px}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px 20px}.faq-list summary{font-weight:900;cursor:pointer}.footer{background:#0f232b;color:#dce8eb;padding:50px 24px 20px}.footer-inner{max-width:1180px;margin:auto;display:flex;justify-content:space-between;gap:30px}.footer-brand{color:#fff}.footer-links{display:flex;gap:18px;flex-wrap:wrap}.copyright{max-width:1180px;margin:30px auto 0;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);font-size:.88rem}@media(max-width:900px){nav{display:none}.hero-inner,.two-col,.two-col.reverse,.quiz-shell{grid-template-columns:1fr}.hero-visual{justify-self:center;max-width:460px}.two-col.reverse>div{order:0}.quiz-intro{position:static}.compare-grid,.error-grid{grid-template-columns:1fr}.mini-grid{grid-template-columns:1fr}.robot-bubble{right:4px}.hero{padding-top:50px}}@media(max-width:620px){.nav-wrap{padding:0 16px}.hero,.section,.quiz-section{padding-left:16px;padding-right:16px}.hero h1 span{display:block;margin:10px 0}.hero-actions .btn{width:100%}.rule-card{grid-template-columns:1fr}.split-examples,.answer-grid{grid-template-columns:1fr}.quiz-card-main{padding:22px 18px}.footer-inner{flex-direction:column}.robot-bubble{position:static;margin:12px auto 0;text-align:center}.hero-visual img{border-radius:28px}.quick-rule{display:grid}.quick-rule span{text-align:center}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}