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@layer exercise-workspace{.thinking-layout.start-style-layout{margin-inline:auto}.sequential-stage-shell,.exercise-panel.sequential-stage-shell,.clean-thinking-card.sequential-stage-shell{grid-template-columns:1fr;gap:14px;display:grid}.exercise-panel.sequential-stage-shell{width:min(100%,760px)}.sequential-stage-shell,.exercise-panel.sequential-stage-shell,.clean-thinking-card.sequential-stage-shell{margin-inline:auto}.exercise-panel.sequential-stage-shell{padding:clamp(14px,2.4vw,22px)}.sequential-stage-shell,.exercise-panel.sequential-stage-shell{background:radial-gradient(760px 360px at 20% 0,#2f9e9e29,#0000 55%),linear-gradient(#06101cf5,#071e2be6);border:1px solid #5eead42e;border-radius:28px;overflow:visible;box-shadow:0 24px 70px #00000042}.sequential-active-card.clean-question-block,.clean-thinking-card .sequential-active-card.clean-question-block{width:100%}.sequential-active-card,.sequential-active-card.clean-question-block,.clean-thinking-card .sequential-active-card.clean-question-block{max-width:100%}.sequential-active-card.clean-question-block,.clean-thinking-card .sequential-active-card.clean-question-block{color:#102235;background:linear-gradient(#fffffff7,#f8fcfff2);border:1px solid #ffffff21;border-radius:24px;margin:0;padding:clamp(14px,2.4vw,22px);box-shadow:0 22px 56px #0206172e}.sequential-active-card{display:grid}.sequential-active-card,.sequential-active-card.clean-question-block,.clean-thinking-card .sequential-active-card.clean-question-block{gap:12px}.sequential-sentence-line{width:100%}.dialogue-sentence-text .exercise-target-word,.sequential-sentence-line .exercise-target-word{color:#0f172a;box-shadow:none;background:0 0;border-bottom:3px solid #e0b84c;border-radius:0;padding:0 2px;text-decoration:none}.sequential-active-card .clean-question-title,.sequential-active-card .exercise-question-title{color:#102235;text-align:center;margin:0;font-size:clamp(20px,3.3vw,30px);font-weight:950;line-height:1.8}.dialogue-question-note{background:#fff7d6;border:1px solid #e0b84c59;border-radius:14px;width:fit-content;max-width:100%;margin-inline:auto;padding:8px 12px;line-height:1.7}.sequential-active-card .clean-answer-grid,.sequential-active-card .stage-one-draggable-grid{grid-template-columns:1fr;gap:10px;width:100%;display:grid}.sequential-active-card .clean-answer-btn,.sequential-active-card .exercise-answer-btn.clean-answer-btn{text-align:center;color:#102235;background:#fff;border:1px solid #dbe5ee;border-radius:17px;justify-content:center;align-items:center;width:100%;min-height:56px;margin:0;padding:12px 14px;font-size:17px;font-weight:950;line-height:1.7;display:flex;box-shadow:0 8px 20px #0f23370f}.sequential-active-card .clean-answer-btn:hover{background:#f0fdfa;border-color:#2f9e9e8c;transform:translateY(-1px)}.answer-main-text{justify-content:center;align-items:center;display:inline-flex}.sequential-active-card .thinking-bubble{text-align:center;border-radius:18px;width:min(100%,620px);margin:0 auto}.clean-question-nav{flex-wrap:wrap}@keyframes activeCardArrive{0%{opacity:0;transform:translateY(22px)scale(.985)}to{opacity:1;transform:translateY(0)scale(1)}}@media (max-width:640px){.exercise-page-shell{padding:10px 8px 32px}.sequential-stage-shell,.exercise-panel.sequential-stage-shell,.clean-thinking-card.sequential-stage-shell{border-radius:22px;gap:10px;padding:10px}.sequential-active-card,.sequential-active-card.clean-question-block,.clean-thinking-card .sequential-active-card.clean-question-block{border-radius:20px;gap:10px;padding:12px 10px}.sequential-sentence-line{border-radius:15px;padding:8px 9px;font-size:16px}.sequential-active-card .clean-question-title,.sequential-active-card .exercise-question-title{font-size:20px;line-height:1.75}.sequential-active-card .clean-answer-btn,.sequential-active-card .exercise-answer-btn.clean-answer-btn{border-radius:15px;min-height:50px;padding:10px 9px;font-size:15.5px}.dialogue-question-note{padding:7px 9px;font-size:12px}}.start-style-layout{justify-content:center;align-items:flex-start;width:100%;display:flex}.sequential-stage-shell{scroll-behavior:smooth;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#19b889 #ffffff1a;width:min(760px,100%);max-height:calc(100svh - 150px);padding:18px 14px 22px;overflow:hidden auto}.sequential-stage-shell::-webkit-scrollbar{width:8px}.sequential-stage-shell::-webkit-scrollbar-track{background:#ffffff1a;border-radius:999px}.sequential-stage-shell::-webkit-scrollbar-thumb{background:linear-gradient(#16a34a,#22d3ee);border-radius:999px}.algorithm-step-card{color:#0f172a;text-align:center;direction:rtl;width:100%}.algorithm-step-card.is-solved{border-color:#16a34a3d}.algorithm-active-card:after{content:"↑"}.algorithm-step-card.is-solved:after,.algorithm-active-card:after{width:30px;height:30px;position:absolute;bottom:-23px;left:50%;transform:translate(-50%)}.algorithm-active-card:after{display:grid}.algorithm-step-card.is-solved:after,.algorithm-active-card:after{place-items:center}.algorithm-active-card:after{color:#10b981}.algorithm-step-card.is-solved:after,.algorithm-active-card:after{font-size:28px}.algorithm-active-card:after{font-weight:950}.algorithm-step-card.is-solved:after,.algorithm-active-card:after{text-shadow:0 2px #fff,0 0 12px #10b98159;z-index:3}.algorithm-card-label{background:#10b98114;border:1px solid #10b9812e;border-radius:999px;width:max-content;max-width:calc(100% - 52px);margin:0 auto 9px;padding:5px 12px}.algorithm-step-card h3,.algorithm-active-card .exercise-question-title{color:#0f172a;text-align:center;margin:0 0 14px;padding-inline:38px;font-size:clamp(18px,2.7vw,25px);font-weight:950;line-height:1.75}.algorithm-active-card{outline-offset:2px;outline:2px solid #10b98173;animation:.9s cubic-bezier(.22,1,.36,1) both activeCardDrop}.sequential-sentence-line{flex-wrap:wrap;justify-content:center;align-items:center;margin:0 0 14px}.algorithm-active-card .exercise-target-word,.algorithm-step-card .exercise-target-word{color:#0f172a;background:0 0;border-bottom:2px solid #10b981;padding:0 2px}.algorithm-active-card .clean-answer-grid{grid-template-columns:1fr;gap:10px;margin-top:10px;display:grid}.algorithm-active-card .clean-answer-btn{color:#0f172a;width:100%;min-height:52px;box-shadow:none;text-align:right;background:#fff;border:1px solid #dbe4ef;border-radius:16px;justify-content:space-between;align-items:center;gap:10px;margin:0;display:flex}.algorithm-active-card .clean-answer-btn:hover{background:#fff;border-color:#dbe4ef;transform:none}.algorithm-active-card .clean-answer-btn.is-correct{color:#064e3b;background:#dcfce7;border-color:#16a34a}.algorithm-active-card .clean-answer-btn.is-wrong{color:#7f1d1d;background:#fee2e2;border-color:#ef4444}.answer-main-text{text-align:start;flex:1;line-height:1.7}.clean-question-nav{gap:8px}.clean-question-nav button{margin-top:0}@keyframes activeCardDrop{0%{opacity:0;transform:translateY(28px)scale(.985)}to{opacity:1;transform:translateY(0)scale(1)}}@media (max-width:640px){.exercise-page-shell{padding:10px 8px 32px}.sequential-stage-shell{border-radius:22px;width:100%;max-height:calc(100svh - 118px);padding:12px 9px 18px}.algorithm-step-card{border-radius:20px;padding:20px 10px 14px}.algorithm-step-card h3,.algorithm-active-card .exercise-question-title{padding-inline:28px;font-size:18px;line-height:1.75}.sequential-sentence-line{margin-bottom:12px;padding:9px 10px}.dialogue-sentence-text{font-size:16px}.algorithm-active-card .clean-answer-btn{min-height:48px;padding:9px 10px;font-size:14px}.algorithm-step-card.is-solved:after,.algorithm-active-card:after{font-size:24px;bottom:-20px}}.algorithm-active-card .clean-answer-btn{transition:transform .8s,box-shadow .8s,border-color .8s,background .8s}.algorithm-step-card.is-solved{animation:.78s cubic-bezier(.2,.9,.2,1) both solvedCardSettle}.sequential-active-card.clean-question-block,.clean-thinking-card .sequential-active-card.clean-question-block{scroll-margin-top:150px}@keyframes solvedCardSettle{0%{opacity:.25;transform:translateY(36px)scale(.985)}to{opacity:1;transform:translateY(0)scale(1)}}.algorithm-active-card .clean-answer-btn:not(.is-correct):not(.is-wrong):hover{background:#f8fffd;border-color:#2f9e9e73}.exercise-page-shell{scroll-behavior:smooth}.algorithm-step-card.is-solved{color:#0f172a;background:#ffffffd1;border:1px solid #2f9e9e38;border-radius:16px;grid-template-columns:32px 1fr;align-items:center;gap:8px;min-height:0;padding:8px 12px;display:grid;box-shadow:0 8px 20px #0f172a0f}.algorithm-step-card.is-solved .algorithm-card-label,.algorithm-step-card.is-solved h3{display:none}.algorithm-step-card.is-solved:after{content:"↓";text-align:center;color:#5eead4;grid-column:1/-1;margin-top:2px;font-weight:950;line-height:1;display:block}.algorithm-step-card.is-solved:last-child:after{display:none}.algorithm-active-card,.sequential-active-card{width:min(760px,100%)}.algorithm-active-card{background:#fbfdff;margin:0 auto 14px}.algorithm-active-card,.sequential-active-card{color:#0f172a}.algorithm-active-card{border:2px solid #2f9e9e75;box-shadow:0 18px 50px #02061733,inset 0 1px #ffffffa6}.algorithm-active-card,.sequential-active-card{will-change:transform}.clean-answer-btn:not(.is-correct):not(.is-wrong),.algorithm-active-card .clean-answer-btn:not(.is-correct):not(.is-wrong){color:#0f172a;background:#fff;border:1px solid #dbe5ec;box-shadow:0 7px 16px #0f172a0b}.clean-answer-btn:not(.is-correct):not(.is-wrong):hover{background:#f8fffd;border-color:#2f9e9e73}.thinking-bubble{z-index:4;max-width:96%}.thinking-bubble.success{border-color:#22c55e}.thinking-bubble.hint{border-color:#e0b84c}@media (max-width:700px){.algorithm-active-card,.sequential-active-card{border-radius:20px;width:100%}.algorithm-step-card.is-solved{border-radius:14px;grid-template-columns:26px 1fr;padding:7px 9px}.stage-one-draggable-grid,.clean-answer-grid{gap:8px}.clean-answer-btn{min-height:46px;font-size:14px}}.exercise-complete-banner:not(.final-only-complete-banner),.exercise-hero-card .exercise-hero-side,.exercise-hero-card .exercise-meta-inline,.final-only-complete-banner,.exercise-bottom-nav.stage-locked-next{display:none}.exercise-page-shell{margin-inline:auto;padding-inline:12px}.exercise-hero-card{text-align:center;margin-bottom:8px}.stage-learning-badge{color:#ffe89a;box-shadow:none;background:#e0b84c1a;border:1px solid #e0b84c47}.clean-thinking-card.sequential-stage-shell{background:linear-gradient(#06101cf0,#07222ae0);border:1px solid #2f9e9e38;border-radius:28px;width:min(820px,100%);margin:0 auto 20px;padding:16px;position:relative;overflow:visible;box-shadow:0 24px 70px #00000042}.algorithm-active-card.sequential-active-card{color:#0f172a;transform-origin:top;will-change:transform,opacity;background:linear-gradient(#fff,#f8fffc);border:1px solid #0f172a1a;border-radius:26px;width:min(720px,100%);margin-inline:auto;padding:18px;box-shadow:0 18px 44px #0206171f}@keyframes khStepNumberPulse{0%,to{box-shadow:0 0 0 3px #e0b84c1a,0 8px 20px #0000001f}50%{box-shadow:0 0 0 8px #e0b84c0d,0 12px 28px #2f9e9e2e}}.sequential-sentence-line{justify-items:center;margin-bottom:10px}.exercise-target-word{color:inherit;background:0 0;border-bottom:3px solid #e0b84c;padding:0 2px;text-decoration:none}.clean-answer-grid.stage-one-draggable-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;display:grid}.sequential-active-card .clean-answer-btn:not(.is-correct):not(.is-wrong),.sequential-active-card .exercise-answer-btn.clean-answer-btn:not(.is-correct):not(.is-wrong){color:#0f172a;text-align:center;background:#fff;border:1px solid #d8e2ee;border-radius:18px;justify-content:center;align-items:center;min-height:54px;margin:0;padding:12px;font-weight:950;display:flex;box-shadow:0 8px 18px #0f172a0b}.sequential-active-card .clean-answer-btn:hover:not(.is-correct):not(.is-wrong){background:#fbffff;border-color:#2f9e9e6b;transform:translateY(-1px)}.sequential-active-card .clean-answer-btn.is-correct{color:#064e3b;background:#dcfce7;border-color:#22c55e;box-shadow:0 0 0 4px #22c55e24,0 12px 28px #22c55e29}.sequential-active-card .clean-answer-btn.is-wrong{color:#7f1d1d;background:#fee2e2;border-color:#ef4444;box-shadow:0 0 0 4px #ef44441f}@keyframes khResultBecomeChip{0%{opacity:0;transform:scale(.94)}50%{opacity:1;transform:scale(1.04)}to{opacity:1;transform:scale(1)}}.thinking-bubble{text-align:right;gap:4px;display:grid;position:static;transform:none}.clean-question-nav button{border-color:#0f766e38}@media (max-width:700px){.exercise-page-shell{padding-inline:8px}.clean-thinking-card.sequential-stage-shell{border-radius:22px;padding:10px}.algorithm-active-card.sequential-active-card{border-radius:20px}.dialogue-sentence-text{font-size:24px}.clean-question-title{font-size:19px;line-height:1.75}.clean-answer-grid.stage-one-draggable-grid{grid-template-columns:1fr 1fr;gap:8px}.sequential-active-card .clean-answer-btn:not(.is-correct):not(.is-wrong){min-height:48px;padding:9px;font-size:14px}}@media (max-width:390px){.clean-answer-grid.stage-one-draggable-grid{grid-template-columns:1fr}}.algorithm-active-card.sequential-active-card,.sequential-active-card.clean-question-block,.clean-thinking-card .sequential-active-card.clean-question-block{flex-direction:column;justify-content:flex-start;display:flex}@keyframes khResultChipForms{0%{opacity:0;transform:translateY(8px)scale(.96)}to{opacity:1;transform:translateY(0)scale(1)}}@keyframes khNextStepQuietPulse{0%{opacity:0;transform:translateY(4px)}35%{opacity:1;transform:translateY(0)}to{opacity:.92;transform:translateY(0)}}@media (max-width:700px){.algorithm-active-card.sequential-active-card,.sequential-active-card.clean-question-block,.clean-thinking-card .sequential-active-card.clean-question-block{padding:16px 12px 18px}}@media (prefers-reduced-motion:reduce){.question-content-motion,.sequential-active-card{transition:none;animation:none}}.sequential-active-card{filter:none;opacity:1;animation:none;transform:none}.question-content-motion{transform-origin:50%}@media (max-width:700px){.question-content-motion{min-height:390px}}}
@layer exercise-stability{.exercise-page-shell{--kh-progress-h:54px}@media (min-width:701px){.exercise-page-shell{padding-top:88px}}.exercise-page-shell .algorithm-step-card{animation:none}.exercise-page-shell{--kh-fixed-progress-top:74px;--kh-fixed-progress-height:48px}@media (max-width:700px){.exercise-page-shell{--kh-fixed-progress-top:58px;--kh-fixed-progress-height:42px;padding-top:calc(var(--kh-fixed-progress-top) + var(--kh-fixed-progress-height) + 12px)}}.exercise-hero-side .exercise-progress-panel{display:none}.exercise-page-shell .question-content-motion{backface-visibility:hidden}@media (max-width:700px){.exercise-page-shell .question-content-motion{min-height:390px}}.exercise-page-shell .thinking-bubble.hint{white-space:pre-line;box-shadow:0 10px 26px #02061714}.exercise-page-shell .thinking-layout,.exercise-page-shell .start-style-layout{width:min(720px,100%);margin:0 auto;display:block}.exercise-page-shell .clean-question-block,.exercise-page-shell .algorithm-active-card,.exercise-page-shell .sequential-active-card{opacity:1}.exercise-page-shell .exercise-answer-btn{color:#0f172a;background:#fff;border:1px solid #0f172a1f;border-radius:16px;min-height:52px;font-weight:900;animation:none;transform:none;box-shadow:0 8px 18px #0206170d}.exercise-page-shell .clean-answer-btn:hover{background:#f8fffc;border-color:#159a78}.exercise-page-shell .thinking-bubble{display:block}:root{--kh-fixed-nav-h:66px;--kh-progress-h:58px;--kh-focus-teal:#159a78;--kh-focus-teal-2:#2f9e9e;--kh-soft-bg:#eef7f5}html,body{scroll-behavior:smooth;height:auto;overflow-y:auto}.exercise-page-shell{min-height:auto;transform:none}.exercise-page-shell .exercise-progress-panel,.exercise-page-shell .stage-locked-next{display:none}.thinking-layout.start-style-layout{width:min(760px,100vw - 28px);max-width:760px;transform:none}.exercise-page-shell .exercise-core-card.clean-thinking-card,.exercise-page-shell .clean-thinking-card.sequential-stage-shell,.exercise-page-shell .sequential-stage-shell{color:#0f172a;background:linear-gradient(#f8fffc,#edf8f6);border:2px solid #159a7857;border-radius:30px;width:100%;max-width:760px;min-height:auto;max-height:none;margin:0 auto 18px;padding:18px;animation:none;transform:translateZ(0)scale(1.01);box-shadow:0 22px 48px #02061733,0 0 0 8px #159a780d}.exercise-page-shell .exercise-core-card:before,.exercise-page-shell .exercise-core-card:after,.exercise-page-shell .clean-thinking-card:before,.exercise-page-shell .clean-thinking-card:after,.exercise-page-shell .sequential-stage-shell:before,.exercise-page-shell .sequential-stage-shell:after{content:none;display:none}.exercise-page-shell .clean-question-block,.exercise-page-shell .sequential-active-card,.exercise-page-shell .algorithm-active-card{color:#0f172a;filter:none;background:#fff;border:1px solid #0f172a1a;border-radius:26px;width:100%;max-width:680px;min-height:auto;max-height:none;margin:0 auto;padding:20px 18px 18px;overflow:visible;box-shadow:0 12px 30px #02061714}.exercise-page-shell .question-content-motion{will-change:opacity, transform;contain:layout paint;animation:none}.exercise-page-shell .algorithm-step-card:before,.exercise-page-shell .algorithm-step-card:after,.exercise-page-shell .algorithm-active-card:before,.exercise-page-shell .algorithm-active-card:after,.exercise-page-shell .sequential-active-card:before,.exercise-page-shell .sequential-active-card:after{content:none;animation:none;display:none}.exercise-page-shell .sequential-sentence-line{color:#0f172a;background:#f8fafc;border:1px solid #0f172a14}.exercise-page-shell .clean-question-title,.exercise-page-shell .exercise-question-title{color:#111827}.exercise-page-shell .clean-answer-grid{grid-template-columns:1fr;margin:0 auto;display:grid}.exercise-page-shell .clean-answer-btn,.exercise-page-shell .exercise-answer-btn.clean-answer-btn{color:#0f172a;background:#fff;border:1px solid #0f172a21;width:100%;font-weight:900;animation:none;transform:none;box-shadow:0 8px 18px #0206170d}.exercise-page-shell .clean-answer-btn.is-correct{color:#14532d;background:#dcfce7;border-color:#22c55e}.exercise-page-shell .clean-answer-btn.is-wrong{color:#7f1d1d;background:#fee2e2;border-color:#ef4444}.exercise-page-shell .thinking-bubble{text-align:right;border-radius:18px;width:100%;max-width:620px;margin:16px auto 0;padding:14px 16px;line-height:1.85;animation:none;transform:none;box-shadow:0 10px 26px #02061714}.exercise-page-shell .thinking-bubble.hint{color:#2f2205;background:#fff7d6;border:1px solid #e0b84c7a}.exercise-page-shell .thinking-bubble.success{color:#064e3b;background:#ecfdf5;border:1px solid #159a7840}.exercise-page-shell .clean-question-nav{justify-content:center;margin-top:12px}.exercise-page-shell .clean-question-nav button{min-width:118px}@media (max-width:700px){:root{--kh-fixed-nav-h:58px;--kh-progress-h:48px}.exercise-page-shell{max-width:100%}.thinking-layout.start-style-layout{width:100%;max-width:100%}.exercise-page-shell .clean-thinking-card.sequential-stage-shell,.exercise-page-shell .sequential-stage-shell{border-radius:22px;padding:10px}.exercise-page-shell .exercise-core-card.clean-thinking-card,.exercise-page-shell .clean-thinking-card.sequential-stage-shell,.exercise-page-shell .sequential-stage-shell{transform:none}.exercise-page-shell .clean-question-block,.exercise-page-shell .sequential-active-card,.exercise-page-shell .algorithm-active-card{border-radius:20px;padding:13px 10px}.exercise-page-shell .clean-question-title,.exercise-page-shell .exercise-question-title{margin:8px auto 14px}.exercise-page-shell .thinking-bubble{border-radius:15px;margin-top:10px;padding:10px 11px;font-size:12px;line-height:1.65}}.exercise-page-shell{overflow:visible}.exercise-page-shell .exercise-hero-card{display:none}.thinking-layout.start-style-layout{padding-top:0;overflow:visible}.exercise-page-shell .exercise-core-card.clean-thinking-card,.exercise-page-shell .clean-thinking-card.sequential-stage-shell,.exercise-page-shell .sequential-stage-shell{scroll-margin-top:calc(var(--kh-fixed-nav-h,66px) + 58px);padding-top:12px;position:relative;overflow:visible}.exercise-page-shell .clean-question-block,.exercise-page-shell .sequential-active-card,.exercise-page-shell .algorithm-active-card{margin-top:0;transition:none;animation:none;transform:none}.exercise-page-shell .question-content-motion{transform-origin:50%}@media (max-width:700px){.exercise-page-shell .exercise-core-card.clean-thinking-card,.exercise-page-shell .clean-thinking-card.sequential-stage-shell,.exercise-page-shell .sequential-stage-shell{padding-top:8px}}.exercise-page-shell .clean-answer-grid.stage-one-draggable-grid{margin-bottom:0}.exercise-page-shell .sequential-active-card.clean-question-block{scroll-margin-top:110px}.exercise-page-shell .thinking-bubble{scroll-margin-top:120px}@media (max-width:700px){.exercise-page-shell .sequential-active-card.clean-question-block{scroll-margin-top:82px}}.inline-correction-hint{text-align:center;flex-direction:column;align-items:center;animation:.34s both kh-soft-text-in}.inline-correction-hint-title{border:1px solid #e0b84c8c;border-radius:999px;justify-content:center;align-items:center;min-height:28px;padding:4px 14px;font-size:14px;font-weight:900;display:inline-flex}.inline-correction-hint-text{white-space:pre-line;width:100%;font-size:clamp(16px,2vw,20px)}.inline-correction-hint-btn{appearance:none;cursor:pointer;min-width:140px;font-weight:900}.inline-correction-hint-btn:hover{transform:translateY(-1px)}.sequential-active-card:has(.inline-correction-hint) .clean-question-nav{margin-top:8px}@keyframes kh-soft-text-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@media (max-width:700px){.inline-correction-hint{border-radius:18px;gap:7px;width:100%;margin:10px auto 8px;padding:13px 12px}.inline-correction-hint-title{min-height:24px;padding:3px 10px;font-size:12px}.inline-correction-hint-text{font-size:13.5px;line-height:1.75}.inline-correction-hint-btn{min-width:108px;min-height:32px;padding:5px 14px;font-size:12px}}html,body{overflow-x:hidden}.exercise-page-shell *{min-width:0}.exercise-page-shell .clean-answer-grid,.exercise-page-shell .stage-one-draggable-grid,.exercise-page-shell .exercise-answer-btn,.exercise-page-shell .clean-answer-btn{overflow-wrap:anywhere;max-width:100%}.exercise-page-shell .exercise-answer-btn{position:relative}.exercise-page-shell .global-example-progress-wrap{flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;width:min(100%,780px);max-width:calc(100vw - 24px);margin:12px auto 18px;padding:0 8px;display:flex;overflow:visible}.exercise-page-shell .click-success-pop{color:#fff;z-index:99999;pointer-events:none;will-change:transform,opacity;background:#22c55e;border-radius:999px;place-items:center;width:34px;height:34px;font-size:22px;font-weight:950;animation:.72s cubic-bezier(.22,.9,.2,1) both khClickCheckOnly;display:grid;position:fixed;transform:translate(-50%,-50%);box-shadow:0 10px 22px #22c55e57}@keyframes khClickCheckOnly{0%{opacity:0;transform:translate(-50%,-50%)scale(.55)}22%{opacity:1;transform:translate(-50%,-86%)scale(1.08)}58%{opacity:1;transform:translate(-50%,-70%)scale(1)}to{opacity:0;transform:translate(-50%,-112%)scale(.88)}}.exercise-page-shell .sequential-active-card,.exercise-page-shell .algorithm-step-card{transform-origin:top}@media (max-width:700px){.exercise-page-shell .global-example-progress-wrap{gap:7px;margin:8px auto 12px}}.exercise-page-shell .stage-learning-badge{letter-spacing:0}.practice-game-shell .exercise-hero-card{background:radial-gradient(circle at 12% 20%,#e0b84c38,#0000 28%),radial-gradient(circle at 88% 14%,#2f9e9e38,#0000 30%),linear-gradient(145deg,#071523f5,#0c3036d1);border-color:#e0b84c4d}.practice-challenge-card{background:radial-gradient(circle at 15% 0,#e0b84c21,#0000 30%),linear-gradient(#081a28f5,#092e32d6);border-color:#e0b84c3d;position:relative;overflow:hidden}.practice-challenge-card:before{content:"التدريب";top:12px;color:#ffe89a;background:#e0b84c21;border:1px solid #e0b84c38;border-radius:999px;padding:5px 10px;font-size:12px;font-weight:950;position:absolute;inset-inline-start:14px}}
@layer exercise-stability{.practice-game-shell .practice-challenge-card .clean-question-title{display:none}.practice-game-shell .practice-challenge-card{color:#102b3a;background:#fff;border-color:#0f2f3e29}.practice-game-shell .practice-challenge-card:before{display:none}.practice-game-shell .practice-challenge-card .sequential-sentence-line{color:#102b3a;background:#f5f9fb;border:1px solid #d9e7ec;border-radius:20px;padding:18px 20px}.practice-game-shell .practice-challenge-card .dialogue-label{color:#167f7a;font-weight:900}.practice-game-shell .practice-challenge-card .dialogue-sentence-text{color:#0b2230}.practice-game-shell .practice-challenge-card .inline-correction-hint{color:#392d13;background:#fff7e8;border-color:#e5bd62}.practice-game-shell .practice-challenge-card .inline-correction-hint-title,.practice-game-shell .practice-challenge-card .inline-correction-hint-text{color:#392d13}.practice-direct-board{color:#102b3a;background:#f7fbfb;border:1px solid #2f9e9e47;border-radius:24px;margin-top:18px;padding:22px;box-shadow:0 16px 40px #102b3a14}.practice-direct-kicker{color:#126f6b;background:#e4f5f3;border-radius:999px;padding:7px 12px;font-size:13px;font-weight:950;display:inline-flex}.practice-direct-prompt{margin-top:18px}.practice-direct-prompt strong{color:#147d78}.practice-direct-note{margin-top:4px}.practice-retry-message{color:#5b4911;background:#fff8df;border:1px solid #ead27b;border-radius:15px;margin-top:14px;padding:12px 14px;font-weight:900;line-height:1.7}.practice-direct-options{margin-top:20px}.practice-direct-option{cursor:pointer;font:inherit;transition:all .18s}.practice-direct-option:hover{transform:translateY(-2px);box-shadow:0 10px 24px #2f9e9e1f}.practice-direct-option span{color:#126f6b;background:#e8f6f5;border-radius:50%;place-items:center;min-width:32px;height:32px;font-weight:950;display:grid}.practice-direct-option strong{line-height:1.75}.practice-success-pulse{margin-top:16px;font-weight:950;animation:.55s practicePulse}@keyframes practicePulse{0%{opacity:.25;transform:scale(.97)}to{opacity:1;transform:scale(1)}}@media (max-width:700px){.practice-direct-board{border-radius:20px;padding:16px}.practice-direct-option{padding:14px}.practice-direct-option strong{font-size:15px}}.practice-wrong-sequence{color:#102b3a;background:#fff8ea;border:1px solid #ead59a;margin-top:18px}.practice-wrong-title{color:#7a3f10;font-size:18px;font-weight:950;line-height:1.8}.practice-wrong-subtitle{color:#415866;margin-bottom:8px;font-weight:900}.practice-correction-result{background:#fff;border:1px solid #0f77753d;border-radius:15px;gap:5px;margin:12px 0;padding:12px 14px;display:grid}.practice-correction-result span{color:#0f7775;font-size:12px;font-weight:950}.practice-correction-result strong{color:#102b3a;font-size:16px;font-weight:900;line-height:1.85}.practice-wrong-actions{flex-wrap:wrap}.practice-wrong-actions button{color:#fff;cursor:pointer;font-weight:950;font:inherit;background:#0f7775;border:0;border-radius:999px;padding:11px 18px}.practice-wrong-actions button.secondary{color:#0f7775;background:#fff;border:1px solid #9fd0cd}.practice-wrong-actions button:hover{filter:brightness(.98);transform:translateY(-1px)}.practice-wrong-sequence.is-primary-panel{background:linear-gradient(135deg,#fff8e8,#f1fbf8);border:1px solid #e0b84c94;border-radius:24px;margin:8px 0 0;padding:18px 18px 16px;box-shadow:0 18px 42px #0f172a1a}.practice-wrong-sequence.is-primary-panel .practice-wrong-title{color:#7a3f10;font-size:20px}.practice-wrong-sequence.is-primary-panel .practice-wrong-subtitle{color:#102b3a}.hint-after-options{margin-top:12px}.hint-after-options-btn{appearance:none;font:inherit;cursor:pointer;font-weight:800;transition:transform .16s,background .16s,border-color .16s}.hint-after-options-btn:hover:not(:disabled),.hint-after-options-btn:focus-visible:not(:disabled){background:#1e6f7475;border-color:#70ebe0b8;outline:none;transform:translateY(-1px)}.hint-after-options-btn:disabled{opacity:.5;cursor:default}.solution-step-progress{color:#0f172a;direction:rtl;width:min(680px,100%)}.solution-step-progress-head{justify-content:space-between;align-items:center;gap:10px;margin-bottom:7px;display:flex}.solution-step-progress-head strong{color:#075985;font-size:14px;font-weight:950}.solution-step-progress-head span{color:#0f766e;white-space:nowrap;background:#0f766e1a;border-radius:999px;padding:4px 9px;font-size:12px;font-weight:950}.solution-step-progress-track{box-shadow:inset 0 1px 2px #0f172a14}.solution-step-progress-track i{border-radius:inherit;height:100%;transition:width .45s;display:block;box-shadow:0 0 14px #2dd4bf52}.solution-step-progress p{color:#475569;text-align:center;margin:6px 0 0;font-size:12px;font-weight:750;line-height:1.65}@media (max-width:700px){.solution-step-progress{border-radius:15px;margin:0 auto 9px;padding:9px 10px 8px}.solution-step-progress-head strong{font-size:13px}.solution-step-progress-head span{padding:3px 8px;font-size:11px}.solution-step-progress-track{height:7px}.solution-step-progress p{margin-top:5px;font-size:12px}.exercise-page-shell .global-example-progress-wrap.global-example-progress-bottom{gap:6px;margin:14px auto 4px}}.solution-step-progress.solution-step-progress-sticky{z-index:120;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff7;border:1px solid #0f766e33;border-radius:15px;width:min(680px,100%);margin:0 auto 10px;padding:8px 12px;position:sticky;top:8px;box-shadow:0 8px 20px #0206171a}.solution-step-progress.solution-step-progress-sticky .solution-step-progress-head{margin-bottom:5px}.solution-step-progress.solution-step-progress-sticky .solution-step-progress-head strong{color:#0f766e;font-size:13px;font-weight:950}.solution-step-progress.solution-step-progress-sticky .solution-step-progress-head span{color:#64748b;background:0 0;padding:0;font-size:12px;font-weight:900}.solution-step-progress.solution-step-progress-sticky .solution-step-progress-track{height:6px;box-shadow:none;background:#e5f3f0}.solution-step-progress.solution-step-progress-sticky .solution-step-progress-track i{box-shadow:none;background:#159a78;transition:width .35s}.exercise-page-shell .global-example-progress-wrap.global-example-progress-bottom{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);opacity:1;direction:rtl;background:#061620f0;border:1px solid #5eead438;gap:5px;display:grid;box-shadow:0 10px 28px #0000003d}.global-example-progress-topline{color:#dffdfa;justify-content:space-between;align-items:center;gap:10px;font-size:12px;font-weight:850;line-height:1.4;display:flex}.global-example-progress-topline strong{color:#ffe89a;white-space:nowrap;font-weight:950}.global-example-progress-track{background:#ffffff24;border-radius:999px;height:5px;overflow:hidden}.global-example-progress-track i{border-radius:inherit;background:#2dd4bf;height:100%;transition:width .4s;display:block}.algorithm-active-card.sequential-active-card,.sequential-active-card.clean-question-block,.clean-thinking-card .sequential-active-card.clean-question-block{opacity:1;filter:none;min-height:clamp(430px,68vh,610px);animation:none;position:relative;overflow:hidden;transform:none}@media (max-width:700px){.exercise-page-shell{padding-bottom:74px}.solution-step-progress.solution-step-progress-sticky{border-radius:13px;width:100%;margin-bottom:7px;padding:7px 9px;top:4px}.solution-step-progress.solution-step-progress-sticky .solution-step-progress-head strong,.solution-step-progress.solution-step-progress-sticky .solution-step-progress-head span{font-size:12px}.solution-step-progress.solution-step-progress-sticky .solution-step-progress-track{height:5px}.exercise-page-shell .global-example-progress-wrap.global-example-progress-bottom{bottom:6px}.algorithm-active-card.sequential-active-card,.sequential-active-card.clean-question-block,.clean-thinking-card .sequential-active-card.clean-question-block{min-height:min(68vh,560px)}}.exercise-page-shell{overflow-x:hidden}.exercise-page-shell .exercise-hero-card{min-height:0;box-shadow:none;border-radius:16px;margin:0 auto 10px;padding:9px 12px}.exercise-page-shell .exercise-hero-main{justify-content:center;align-items:center;width:100%;display:flex}.exercise-page-shell .exercise-meta-inline,.exercise-page-shell .exercise-hero-side{display:none}.exercise-page-shell .stage-learning-badge{margin:0;font-size:13px;line-height:1.4}.exercise-page-shell .solution-step-progress.solution-step-progress-sticky{z-index:2;width:100%;box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none;border-radius:14px;margin:0 0 10px;padding:8px 11px;position:relative;top:auto}.exercise-page-shell .solution-step-progress-head{margin-bottom:5px}.exercise-page-shell .solution-step-progress-head strong{font-size:13px}.exercise-page-shell .solution-step-progress-head span{font-size:11px}.exercise-page-shell .algorithm-active-card.sequential-active-card,.exercise-page-shell .sequential-active-card.clean-question-block,.exercise-page-shell .clean-thinking-card .sequential-active-card.clean-question-block{border-radius:22px;height:auto;min-height:0;padding:clamp(14px,2.8vw,24px);overflow:visible}.exercise-page-shell .question-content-motion{min-height:0;padding:1px;overflow:hidden}.exercise-page-shell .sequential-sentence-line{text-align:center;border-radius:17px;gap:5px;margin:0 0 14px;padding:13px 15px;display:grid}.exercise-page-shell .dialogue-label{font-size:var(--clean-text-meta);line-height:1.5}.exercise-page-shell .dialogue-sentence-text{font-size:var(--clean-sentence);font-weight:900;line-height:1.7}.exercise-page-shell .clean-question-title,.exercise-page-shell .exercise-question-title{text-align:right;max-width:700px;font-size:var(--clean-text-question);margin:0 auto 9px;padding:0;font-weight:850;line-height:1.85}.exercise-page-shell .clean-answer-grid,.exercise-page-shell .practice-direct-options{gap:9px}.exercise-page-shell .clean-answer-btn,.exercise-page-shell .exercise-answer-btn.clean-answer-btn,.exercise-page-shell .practice-direct-option{text-align:right;min-height:50px;font-size:var(--clean-text-option);border-radius:15px;margin:0;padding:10px 13px;line-height:1.65}.exercise-page-shell .hint-after-options{justify-content:center;margin:11px 0 0;display:flex}.exercise-page-shell .hint-after-options-btn{color:#0f766e;background:#eef9f7;border:1px solid #0f766e4d;border-radius:14px;min-width:180px;min-height:42px;padding:8px 18px;font-weight:900}.exercise-page-shell .global-example-progress-wrap.global-example-progress-bottom{z-index:2;pointer-events:none;border-radius:14px;width:100%;max-width:100%;margin:12px auto 0;padding:8px 11px;position:relative;bottom:auto;left:auto;right:auto;transform:none}@media (max-width:700px){.exercise-page-shell{width:100%;padding:7px 7px 24px}.exercise-page-shell .exercise-hero-card{border-radius:13px;margin-bottom:7px;padding:7px 9px}.exercise-page-shell .stage-learning-badge{font-size:13px}.exercise-page-shell .exercise-core-card.clean-thinking-card{border-radius:17px;margin-bottom:8px;padding:8px}.exercise-page-shell .solution-step-progress.solution-step-progress-sticky{border-radius:12px;margin-bottom:7px;padding:6px 8px}.exercise-page-shell .solution-step-progress-head strong,.exercise-page-shell .solution-step-progress-head span{font-size:13px}.exercise-page-shell .solution-step-progress-track{height:5px}.exercise-page-shell .algorithm-active-card.sequential-active-card,.exercise-page-shell .sequential-active-card.clean-question-block,.exercise-page-shell .clean-thinking-card .sequential-active-card.clean-question-block{border-radius:16px;padding:11px 9px 12px}.exercise-page-shell .sequential-sentence-line{border-radius:13px;margin-bottom:10px;padding:10px 9px}.exercise-page-shell .dialogue-sentence-text{font-size:var(--clean-sentence);line-height:1.65}.exercise-page-shell .clean-question-title,.exercise-page-shell .exercise-question-title{font-size:var(--clean-text-question);margin-bottom:7px;line-height:1.75}.exercise-page-shell .clean-answer-btn,.exercise-page-shell .exercise-answer-btn.clean-answer-btn,.exercise-page-shell .practice-direct-option{min-height:44px;font-size:var(--clean-text-option);border-radius:13px;padding:8px 10px;line-height:1.65}.exercise-page-shell .hint-after-options{margin-top:9px}.exercise-page-shell .hint-after-options-btn{min-width:160px;min-height:39px;font-size:var(--clean-text-meta);padding:7px 14px}.exercise-page-shell .global-example-progress-wrap.global-example-progress-bottom{border-radius:12px;width:100%;margin-top:8px;padding:7px 9px}.global-example-progress-topline{font-size:13px}}.quiz-form-option>span:last-child,.remedial-options .quiz-form-option>span:last-child{white-space:pre-line;text-align:start;line-height:1.75}.practice-teacher-steps{color:#173845;text-align:right;box-sizing:border-box;direction:rtl;background:#fff;border:1px solid #d8e7e5;border-radius:16px;width:100%;max-width:720px;margin:0 auto;padding:14px 34px 14px 16px}.practice-teacher-steps li{text-align:right;overflow-wrap:break-word;padding:5px 0;font-weight:780;line-height:1.8}.practice-teacher-steps li::marker{color:#0f766e;font-weight:950}.exercise-page-shell .hint-after-options{flex-wrap:wrap;align-items:flex-start;gap:10px}.result-example-navigation{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:12px;display:flex}.result-previous-example{color:#0f766e;min-height:42px;font:inherit;cursor:pointer;background:#fff;border:1px solid #9fd0cd;border-radius:14px;padding:8px 16px;font-weight:900}@media (max-width:700px){.practice-teacher-steps{color:#173845;text-align:right;box-sizing:border-box;direction:rtl;background:#fff;border:1px solid #d8e7e5;border-radius:16px;width:100%;max-width:720px;margin:0 auto;padding:14px 34px 14px 16px}}.practice-return-cue{color:#173845;text-align:right;border-top:1px solid #7a3f1029;margin:10px 0 2px;padding-top:9px;font-weight:850;line-height:1.8}}
@layer pages-games-dashboard{.exercise-page-shell .question-choice-prompt,.quiz-question-with-instruction .question-choice-prompt{display:inline}.exercise-page-shell .question-choice-prompt{color:#0f766e}.exercise-page-shell .question-choice-prompt,.quiz-question-with-instruction .question-choice-prompt{font-size:.88em;font-weight:600;line-height:inherit}.quiz-question-with-instruction .question-choice-prompt{color:#5eead4}.exercise-page-shell:not(.practice-game-shell) .question-content-motion{will-change:transform,opacity;flex-direction:column;justify-content:flex-start;min-height:320px;padding:2px;display:flex;overflow:hidden}.exercise-page-shell .sequential-sentence-line{animation:none;transform:none}@media (max-width:820px){.exercise-page-shell:not(.practice-game-shell) .question-content-motion{min-height:290px}}.exercise-page-shell{padding-top:10px;padding-bottom:30px;scroll-padding-top:16px}.exercise-page-shell .exercise-panel,.exercise-page-shell .clean-thinking-card{margin-top:0}.exercise-review-card{font-weight:400;line-height:1.9}.exercise-review-card strong{font-weight:600}@media (max-width:820px){.exercise-page-shell{padding-top:6px;padding-bottom:18px}}.question-slide-viewport{min-width:0}@media (prefers-reduced-motion:reduce){.question-slide-viewport{transition:none}}html body .exercise-page-shell .question-slide-viewport{contain:paint;width:100%;max-width:100%;transition:height .18s ease-out;position:relative;overflow:hidden}html body .exercise-page-shell .question-content-motion{backface-visibility:hidden;will-change:transform, opacity;width:100%;min-width:100%;max-width:100%}}