:root{--blue:#006bff;--navy:#071d55;--text:#0b1e4f;--muted:#4f638f;--line:#cfe0ff;--soft:#f2f7ff;--purple:#6d36ff;--red:#c9182a;--teal:#048a99;--orange:#ef8a00;--shadow:0 10px 30px rgba(19,54,120,.10)}

*{box-sizing:border-box}
html,body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Arial,sans-serif;color:var(--text);background:linear-gradient(90deg,#effcff,#fff 14%,#fff 86%,#f5efff)}
a{text-decoration:none;color:inherit}
.home-content{padding:0}
.hero{position:relative;min-height:362px;overflow:hidden;border-bottom:1px solid #d4e3ff}
.hero-bg{position:absolute;right:0;top:0;width:66%;height:100%;object-fit:cover}
.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#fff 0%,#fff 32%,rgba(255,255,255,.82) 44%,rgba(255,255,255,0) 62%)}
.hero-copy{position:relative;z-index:1;padding:58px 0 0 42px;max-width:560px}
.hero h1{font-size:76px;line-height:.95;margin:0 0 10px;font-weight:1000;letter-spacing:-.06em;background:linear-gradient(90deg,#005bdb,#081a57);-webkit-background-clip:text;color:transparent}
.hero .subtitle{font-size:31px;font-weight:1000;background:linear-gradient(90deg,#0072ff,#7a3dff);-webkit-background-clip:text;color:transparent;margin-bottom:16px}
.hero p{font-size:20px;line-height:1.45;margin:0 0 26px;max-width:520px}
.btns{display:flex;gap:18px}
.btn{border-radius:10px;padding:16px 24px;font-weight:900;display:inline-flex;gap:12px;align-items:center;border:2px solid #006bff;font-size:17px}
.btn.primary{background:linear-gradient(90deg,#006bff,#7238ff);color:#fff;box-shadow:0 12px 26px rgba(50,82,230,.28)}
.btn.secondary{background:#fff;color:#005be8}
.mode-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding:18px 16px 20px}
.mode-card{height:126px;border:1px solid #adcaff;border-radius:10px;position:relative;overflow:hidden;background:linear-gradient(90deg,#f7fcff,#f8f3ff);display:flex;align-items:center;padding:16px 95px 16px 18px}
.mode-card .icon{width:60px;height:60px;margin-right:18px}
.mode-card h3{font-size:30px;margin:0 0 3px;font-weight:1000}
.mode-card p{margin:0;font-size:16px;line-height:1.2}
.mode-card .char{position:absolute;right:30px;bottom:0;width:116px;max-height:126px;object-fit:contain}
.mode-card .arrow{position:absolute;right:12px;color:#008ea5;font-size:38px}
.topics{padding:0 16px 22px}
.section-head{border-top:1px solid #d4e3ff;padding:18px 6px 14px;display:flex;align-items:center;gap:14px}
.spark{color:#0072ff;font-size:26px}
.section-head h2{margin:0;font-size:26px;font-weight:1000}
.section-head p{margin:0;color:#3d5383}
.section-head a{margin-left:auto;color:#006bff;font-weight:900}
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.topic-card{border:1px solid #c2d8ff;border-radius:10px;overflow:hidden;background:#fff;box-shadow:0 6px 18px rgba(20,60,120,.07);position:relative;min-height:230px}
.topic-card img.cover{width:100%;height:110px;object-fit:cover;display:block}
.topic-card .cat{width:55px;height:55px;border-radius:50%;position:absolute;top:84px;left:18px}
.topic-card .body{padding:30px 20px 20px}
.topic-card h3{font-size:22px;margin:0 0 8px;font-weight:1000}
.topic-card p{font-size:15px;line-height:1.35;color:#213a70;margin:0;white-space:pre-line}
.topic-card .next{position:absolute;right:18px;bottom:54px;font-size:36px;font-weight:900}
.feature-strip{margin:0 16px 18px;border:1px solid #cfe0ff;border-radius:10px;display:grid;grid-template-columns:repeat(4,1fr);background:#fff}
.feature{display:flex;gap:14px;padding:18px 22px;border-right:1px solid #d6e3fa}
.feature:last-child{border-right:0}
.feature img{width:42px;height:42px}
.feature h4{margin:0 0 4px;font-size:16px}
.feature p{margin:0;font-size:13px;color:#51648e}
.page-pad{padding:16px}
.breadcrumb{font-size:13px;color:#006bff;display:flex;gap:14px;margin:6px 0 14px}
.category-hero,.detail-hero{border:1px solid #cfe0ff;border-radius:8px;overflow:hidden;position:relative;min-height:300px;background:#fff}
.category-hero img,.detail-hero img{position:absolute;right:0;top:0;width:72%;height:100%;object-fit:cover}
.category-hero:before,.detail-hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#fff 0%,#fff 35%,rgba(255,255,255,.80) 49%,transparent 67%);z-index:1}
.hero-label,.detail-copy{position:relative;z-index:2;padding:42px 0 0 32px;max-width:470px}
.pill{display:inline-flex;background:#c91422;color:#fff;border-radius:18px;padding:9px 14px;font-weight:900;gap:8px;margin-bottom:18px}
.category-hero h1,.detail-hero h1{font-size:56px;line-height:1.03;margin:0 0 14px;font-weight:1000;color:#081b61;letter-spacing:-.03em}
.category-hero p,.detail-hero p{font-size:19px;line-height:1.45;margin:0 0 20px}
.meta{display:flex;gap:12px}
.meta span{border:1px solid #cfe0ff;border-radius:8px;background:#fff;padding:11px 14px;font-weight:800;font-size:14px}
.filterbar{display:flex;align-items:center;gap:12px;border:1px solid #d4e3ff;border-radius:8px;padding:14px;margin:18px 0}
.chip{border:1px solid #cfe0ff;background:#fff;border-radius:8px;padding:10px 14px;font-weight:800}
.chip.active{background:#eff6ff;color:#006bff}
.sort{margin-left:auto}
.layout-with-sidebar{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:18px}
.lesson-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.lesson-card{border:1px solid #cfe0ff;border-radius:8px;overflow:hidden;background:#fff;min-height:258px;position:relative}
.lesson-card img{width:100%;height:118px;object-fit:cover;display:block}
.lesson-card .num{position:absolute;top:96px;left:8px;background:#e51a2e;color:#fff;border-radius:50%;width:28px;height:28px;display:grid;place-items:center;font-weight:900;border:2px solid #fff}
.lesson-card .level{position:absolute;right:8px;top:8px;background:#defbe7;border-radius:12px;color:#057542;padding:4px 8px;font-size:11px;font-weight:900}
.lesson-card .body{padding:18px 12px 12px}
.lesson-card h3{margin:0 0 8px;font-size:16px;color:#061e66}
.lesson-card p{margin:0 0 12px;font-size:13px;line-height:1.35;color:#29406d}
.card-meta{font-size:11px;color:#0d2a70;display:flex;gap:10px}
.side-panel{display:flex;flex-direction:column;gap:16px}
.info-panel{border:1px solid #cfe0ff;border-radius:8px;background:#fff;padding:18px}
.info-panel h3{margin-top:0}
.quiz-cta{margin-top:18px;border-radius:10px;background:#fff0f0;border:1px solid #f4c7c7;padding:20px;text-align:center}
.quiz-cta .btn{background:#d91722;color:#fff;border:0;justify-content:center;width:100%}
.bottom-cta{margin:20px 0;border:1px solid #f4c7c7;border-radius:10px;background:#fff0f0;padding:24px 28px;display:flex;align-items:center;justify-content:space-between}
.bottom-cta .btn{background:#d91722;color:#fff;border:0}
.detail-grid{display:grid;grid-template-columns:1.35fr .9fr .75fr;gap:14px}
.section-card{border:1px solid #cfe0ff;border-radius:8px;background:#fff;padding:14px}
.section-card h2,.section-card h3{margin:0 0 12px;color:#06246d}
.full{grid-column:1/-1}
.comic-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.comic-strip img{width:100%;height:170px;object-fit:cover;border-radius:8px;border:1px solid #cfe0ff}
.video-card img{width:100%;border-radius:8px;display:block}
.audio-fake{height:72px;border:1px solid #cfe0ff;border-radius:10px;display:flex;align-items:center;gap:14px;padding:0 18px;background:#f9fbff}
.play{width:44px;height:44px;border-radius:50%;background:#7644ff;color:#fff;display:grid;place-items:center;font-weight:900}
.wave{height:20px;flex:1;background:repeating-linear-gradient(90deg,#8c62ff 0 3px,transparent 3px 8px);opacity:.5}
.warning h3{color:#f08200}
.dialogue-list,.quote-list,.quiz-options{display:flex;flex-direction:column;gap:8px}
.line,.quote,.option{border:1px solid #d5e3ff;border-radius:8px;background:#fbfdff;padding:9px 12px;font-size:13px}
.quote:before{content:'“';font-size:22px;color:#006bff}
.quiz-options .option{display:flex;gap:8px;align-items:center}
.purple-btn{background:linear-gradient(90deg,#7541ff,#5800d9);color:#fff;border:0;border-radius:8px;padding:13px 18px;text-align:center;font-weight:900}
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.related{display:flex;border:1px solid #cfe0ff;border-radius:8px;overflow:hidden;min-height:96px;background:#fff}
.related img{width:96px;object-fit:cover}
.related div{padding:10px}
.footer{margin:18px 0 0;border:1px solid #cfe0ff;border-radius:9px;padding:18px 24px;display:flex;align-items:center;justify-content:space-between;background:#fff}
.footer img{width:150px}
.note{background:#fff9e8;border:1px solid #f3d688;border-radius:8px;padding:12px 14px;color:#705000;margin:12px 0}
@media(max-width:1100px){.lesson-grid{grid-template-columns:repeat(2,1fr)}
.layout-with-sidebar,.detail-grid{grid-template-columns:1fr}
.hero h1{font-size:52px}
.topic-grid,.mode-row,.feature-strip,.related-grid,.comic-strip{grid-template-columns:1fr}
.hero-bg{width:100%;opacity:.35}
.hero:before{background:linear-gradient(90deg,#fff 0%,rgba(255,255,255,.85) 100%)}
}