*{box-sizing:border-box}html,body{margin:0;padding:0;background:#080b0a;color:#eeeeeb;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}body{min-height:100vh}.app{min-height:100vh;overflow:hidden;background:radial-gradient(circle at 76% 8%,rgba(93,99,89,.22),transparent 31%),radial-gradient(circle at 12% 78%,rgba(45,49,45,.18),transparent 28%),#080b0a}header{height:70px;padding:0 5.5vw;border-bottom:1px solid rgba(220,225,220,.12);display:flex;align-items:center;justify-content:space-between;position:relative;z-index:10}header b{font-size:14px;font-weight:650;letter-spacing:.22em}header b span{margin:0 4px;color:#858b85}.header-right{display:flex;align-items:center;gap:30px}header small,label{font-size:10px;letter-spacing:.2em;color:#858b86}.menu-icon{font-size:20px;color:#aeb3ad}main{width:min(1120px,89vw);margin:0 auto;padding:0 0 145px}.hero{min-height:570px;position:relative;display:flex;align-items:center}.hero-copy{position:relative;z-index:3;width:54%;padding-top:20px}.hero-copy label{display:block;line-height:1.8;margin-bottom:20px}.hero h1{margin:0;font-size:clamp(70px,9vw,124px);line-height:.86;letter-spacing:-.065em;font-weight:750}.hero p{margin:24px 0 30px;font-size:18px;color:#a9ada8}.primary{border:0;border-radius:6px;padding:17px 27px;background:#eceeea;color:#111311;font-weight:750;letter-spacing:.1em;font-size:11px;cursor:pointer}.primary span{margin-left:20px;font-size:17px}.hero-visual{position:absolute;top:0;right:-9vw;width:70%;height:100%;overflow:hidden;pointer-events:none}.hero-visual:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(90deg,#080b0a,#080b0ad1 12%,#080b0a26 48%,#080b0a08),linear-gradient(0deg,#080b0a 0%,transparent 28%,transparent 75%,rgba(8,11,10,.45) 100%)}.hero-visual img{width:100%;height:100%;object-fit:cover;object-position:57% center;filter:saturate(.72) contrast(1.08)}.lesson-card{margin-top:-4px;min-height:230px;padding:34px 36px;border:1px solid rgba(220,225,220,.17);border-radius:12px;background:#0f1211ba;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);display:flex;justify-content:space-between;gap:30px;position:relative;z-index:4}.lesson-copy{flex:1;min-width:0}.lesson-card h2{margin:13px 0 4px;font-size:38px;line-height:1;letter-spacing:-.04em}.lesson-card p{margin:0 0 27px;color:#a2a7a2}.progress-row{display:flex;align-items:center;gap:25px}.bar{flex:1;height:4px;background:#2a2f2c;border-radius:10px}.circle-arrow{width:40px;height:40px;flex:0 0 40px;border-radius:50%;border:1px solid #6a706b;background:transparent;color:#e8ebe7;font-size:17px;cursor:pointer}.lesson-card small{display:block;margin-top:9px;color:#777d78}.lesson-thumb{width:245px;height:165px;flex:0 0 245px;border-radius:9px;overflow:hidden}.lesson-thumb img{width:100%;height:100%;object-fit:cover;filter:saturate(.72) contrast(1.08)}.note{display:flex;align-items:flex-start;gap:18px;margin-top:62px;padding-top:28px;border-top:1px solid rgba(220,225,220,.12)}.note>span{color:#737973;font-size:11px;padding-top:2px}.note-line{width:1px;height:42px;background:#9ca19c}.note strong{font-size:16px;font-weight:650}.note p{margin:5px 0 0;font-size:13px}.lesson-screen{padding-top:28px}.lesson-top{display:flex;justify-content:space-between;align-items:center;color:#777d78;font-size:11px;letter-spacing:.14em}.back{border:0;background:none;color:#a8ada8;padding:10px 0;cursor:pointer;letter-spacing:.12em;font-size:10px}.learning-stage{display:grid;grid-template-columns:1.08fr .92fr;gap:42px;margin-top:38px;align-items:stretch}.visual-card{min-height:560px;border:1px solid #303632;border-radius:16px;background:linear-gradient(145deg,#252b27,#101412);display:flex;flex-direction:column;justify-content:center;align-items:center;position:relative;overflow:hidden}.visual-card:before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(172,181,164,.12),transparent 68%);top:50%;left:50%;transform:translate(-50%,-55%)}.visual-symbol{position:relative;font-size:170px;filter:grayscale(.15);line-height:1}.visual-caption{position:relative;margin-top:28px;color:#9ea59e;font-size:13px;letter-spacing:.08em;text-transform:uppercase}.word-panel{padding:25px 8px 10px}.word-panel h2{font-size:64px;line-height:.95;letter-spacing:-.05em;margin:18px 0 8px}.pos{font-size:12px;color:#7d847e;letter-spacing:.12em;text-transform:uppercase}.meaning{margin-top:12px;color:#b2b7b2;font-size:18px}.sound-row{margin-top:44px;display:flex;align-items:center;gap:18px}.sound-button{width:52px;height:52px;border-radius:50%;border:1px solid #5e665f;background:#e9ebe7;color:#111;cursor:pointer}.sound-row small{color:#777d78;font-size:10px;letter-spacing:.12em}.sound-bars{display:flex;gap:4px;margin-top:8px;align-items:center;height:18px}.sound-bars i{display:block;width:3px;height:9px;background:#858c86;border-radius:4px}.sound-bars i:nth-child(2){height:15px}.sound-bars i:nth-child(3){height:8px}.sound-bars i:nth-child(4){height:18px}.sound-bars i:nth-child(5){height:11px}.sound-bars i:nth-child(6){height:16px}.sound-bars i:nth-child(7){height:7px}.phonics-box{margin-top:40px;padding:22px 0;border-top:1px solid #2b302d;border-bottom:1px solid #2b302d}.phonics-row{display:flex;align-items:flex-end;gap:18px;margin-top:14px;flex-wrap:wrap}.phonics{display:flex;gap:10px}.phonics span{padding:10px 13px;border:1px solid #454c46;border-radius:5px;background:#121613;font-size:21px;letter-spacing:.03em;cursor:pointer;transition:background .12s ease,border-color .12s ease}.phonics span:hover{border-color:#79f2a5}.phonics span:active{background:#1c211d;transform:scale(.96)}.ipa-reference{display:flex;align-items:baseline;gap:8px;padding-bottom:8px;color:#b9beb9}.ipa-reference small{font-size:9px;letter-spacing:.16em;color:#777d78}.ipa-reference strong{font-size:16px;font-weight:500;letter-spacing:.01em}.phonics-box p{font-size:12px;color:#777d78;margin:14px 0 0}.learning-actions{display:flex;gap:10px;margin-top:28px;align-items:center}.secondary{border:1px solid #3b413d;background:transparent;color:#888f89;border-radius:6px;padding:16px 18px;font-size:10px;letter-spacing:.1em;cursor:pointer}.learning-actions .primary{padding:16px 21px}.learning-note{display:flex;gap:20px;align-items:center;margin-top:35px;padding:18px 0;border-top:1px solid #292e2b}.learning-note span{font-size:9px;letter-spacing:.16em;color:#777e78}.learning-note p{margin:0;font-size:12px;color:#858b86}.content-mini{display:flex;gap:30px;color:#555d56;font-size:9px;letter-spacing:.14em;margin-top:20px}.talk,.search{max-width:760px;margin:0 auto;padding-top:110px}.talk{text-align:center}.talk h1,.search h1{margin-top:18px}.talk p,.search p{margin:20px 0 42px;font-size:18px}.orb{width:260px;height:260px;margin:40px auto;border-radius:50%;display:grid;place-items:center;background:#171a18;border:1px solid #353a36;color:#aeb4ae;box-shadow:0 0 80px #ffffff09}.help{display:block;margin:22px auto;background:none;border:0;color:#777d78;cursor:pointer}.searchbox{display:flex;min-height:68px;border:1px solid #383c39;border-radius:7px;overflow:hidden}.searchbox input{flex:1;min-width:0;background:transparent;color:#eee;border:0;outline:0;padding:20px 22px;font-size:16px}.searchbox input::placeholder{color:#777d78}.searchbox button{width:72px;border:0;background:#eceeea;color:#111;font-size:22px;cursor:pointer}.result{margin-top:22px;padding:28px;border:1px solid #292c2a;border-radius:8px}.result b{display:block;font-size:30px}.result small{display:block;margin-top:7px;color:#747a75}@media(max-width:700px){main{width:88vw}.hero{min-height:610px}.hero-copy{width:100%;padding-top:80px}.hero-visual{right:-42vw;width:125%;opacity:.62}.hero h1{font-size:clamp(62px,18vw,90px)}.lesson-card{padding:26px}.lesson-thumb{display:none}.learning-stage{grid-template-columns:1fr;gap:18px}.visual-card{min-height:360px}.visual-symbol{font-size:110px}.word-panel h2{font-size:52px}.learning-actions{flex-wrap:wrap}nav{width:calc(100vw - 32px);bottom:16px}nav button{flex:1;min-width:0;padding:13px 8px}}nav{position:fixed;left:50%;bottom:24px;transform:translate(-50%);display:flex;gap:4px;padding:5px;background:#121513f0;border:1px solid #343834;border-radius:18px;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:20}nav button{min-width:86px;border:0;background:transparent;color:#777d78;padding:13px 20px;font-size:10px;letter-spacing:.18em;border-radius:14px;cursor:pointer}nav button.on{background:#e9ebe7;color:#111}.word-navigation{display:flex;align-items:center;gap:10px}.word-navigation>span{min-width:54px;text-align:center}.word-nav-btn{width:30px;height:30px;padding:0;border:1px solid rgba(255,255,255,.16);border-radius:50%;background:#ffffff0a;color:inherit;font-size:23px;line-height:26px;cursor:pointer}.word-nav-btn:disabled{opacity:.25;cursor:default}.word-nav-btn:hover:not(:disabled){background:#ffffff1a}.mode-tabs{display:flex;gap:6px;margin:14px 0 18px;border-bottom:1px solid rgba(255,255,255,.08);padding-bottom:8px}.mode-tabs button{border:0;background:transparent;color:inherit;opacity:.45;padding:9px 14px;font-size:10px;letter-spacing:.14em;cursor:pointer}.mode-tabs button.active{opacity:1;border-bottom:2px solid #79f2a5}.tactical-screen{min-height:72vh}.tactical-top{display:flex;align-items:center;justify-content:space-between;gap:18px}.tactical-title{font-size:11px;letter-spacing:.14em;opacity:.5}.tactical-tabs{justify-content:center}.tactical-scene{position:relative;min-height:610px;margin-top:4px;border:1px solid rgba(255,255,255,.12);border-radius:18px;overflow:hidden;background-size:cover;background-position:center;box-shadow:0 24px 70px #0006}.tactical-scene:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(90deg,#03090bd1,#03090b59 52%,#03090bc7);pointer-events:none}.scene-grid{position:absolute;top:0;right:0;bottom:0;left:0;background-image:linear-gradient(rgba(120,255,180,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(120,255,180,.08) 1px,transparent 1px);background-size:60px 60px;opacity:.25;z-index:1}.scene-status{position:absolute;left:24px;top:22px;z-index:3;display:flex;flex-direction:column;gap:5px;text-shadow:0 2px 8px #000}.scene-status span{font-size:9px;color:#8df5b1;letter-spacing:.18em}.scene-status strong{font-size:12px;letter-spacing:.16em}.scene-status small{font-size:10px;opacity:.55}.mission-panel{position:absolute;left:28px;bottom:105px;z-index:3;width:min(58%,680px);padding:24px;border-left:2px solid #72efa5;background:linear-gradient(90deg,rgba(4,12,14,.82),rgba(4,12,14,.35),transparent)}.mission-panel label,.side-label{font-size:9px;letter-spacing:.18em;opacity:.55}.mission-panel h1{font-size:clamp(30px,4vw,58px);line-height:1.08;margin:12px 0 20px;max-width:100%;text-shadow:0 3px 16px rgba(0,0,0,.7)}.listen-large,.scene-action{border:1px solid rgba(255,255,255,.2);background:#050f109e;color:inherit;padding:11px 15px;border-radius:8px;cursor:pointer;letter-spacing:.1em;font-size:10px}.hint-panel{margin-top:14px;display:inline-block;padding:9px 12px;background:#0000008c;border:1px solid rgba(255,255,255,.1);font-size:12px;opacity:.8}.tactical-side{position:absolute;right:24px;top:24px;z-index:3;width:250px;padding:16px;border:1px solid rgba(255,255,255,.12);background:#040c0eb3;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.tactical-choices{display:flex;flex-direction:column;gap:8px;margin-top:14px}.tactical-choices button{display:flex;align-items:center;gap:12px;padding:12px;border:1px solid rgba(255,255,255,.1);background:#ffffff06;color:inherit;text-align:left;cursor:pointer}.tactical-choices b{width:24px;height:24px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.18);font-size:10px}.tactical-choices span{font-size:11px;opacity:.75}.tactical-bottom{position:absolute;left:24px;right:24px;bottom:20px;z-index:4;display:flex;justify-content:center;gap:10px}.tactical-bottom button{min-width:115px;padding:11px 14px;border:1px solid rgba(255,255,255,.16);background:#040c0ec7;color:inherit;border-radius:7px;font-size:9px;letter-spacing:.12em;cursor:pointer}.tactical-bottom .try-btn{border-color:#73efa5;box-shadow:0 0 18px #73efa51f}@media(max-width:800px){.mission-panel{width:calc(100% - 40px);left:20px}.tactical-side{display:none}.tactical-bottom{left:12px;right:12px;gap:5px}.tactical-bottom button{min-width:0;flex:1;padding:10px 6px}.tactical-scene{min-height:540px}}.sentence-tools{display:flex;gap:10px;flex-direction:column}.grammar-button{border:1px solid rgba(255,255,255,.25);background:#00000059;color:#fff;padding:12px 16px;letter-spacing:1.2px;font-size:11px}.adaptive-panel{position:absolute;left:6%;right:6%;bottom:78px;z-index:5;background:#080e10f0;border:1px solid rgba(255,255,255,.2);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);padding:18px 20px;box-shadow:0 16px 40px #00000059}.adaptive-head{display:flex;justify-content:space-between;align-items:center;font-size:10px;letter-spacing:1.6px}.adaptive-head button{background:none;border:0;color:#fff;font-size:22px;line-height:1}.adaptive-panel>p{margin:8px 0 14px;color:#ffffffa6;font-size:12px}.practice-example,.grammar-example{border-left:2px solid rgba(255,255,255,.65);padding:12px 14px;background:#ffffff0a;display:flex;flex-direction:column;gap:7px}.practice-example small{font-size:9px;letter-spacing:1.4px;opacity:.55}.practice-example strong,.grammar-example strong{font-size:18px;font-weight:500;line-height:1.45}.practice-example button{align-self:flex-start;margin-top:4px;background:none;border:1px solid rgba(255,255,255,.25);color:#fff;padding:7px 10px;font-size:10px}.practice-levels{display:flex;gap:18px;margin-top:14px;font-size:9px;letter-spacing:1px;opacity:.65;flex-wrap:wrap}.grammar-cn{color:#ffffffe0!important;font-size:13px!important;line-height:1.6}.grammar-example small{font-size:10px;opacity:.55;line-height:1.4}.practice-panel{max-height:52vh;overflow:auto}.practice-toolbar{display:flex;justify-content:space-between;align-items:center;gap:14px}.practice-toolbar p{margin:8px 0 14px}.cn-toggle{background:#ffffff0d;border:1px solid rgba(255,255,255,.22);color:#fff;padding:7px 10px;font-size:9px;letter-spacing:1px;white-space:nowrap}.practice-steps{display:grid;gap:8px}.practice-step{width:100%;text-align:left;background:#ffffff09;border:1px solid rgba(255,255,255,.12);color:#fff;padding:11px 13px;display:grid;gap:5px;cursor:pointer}.practice-step.selected{border-color:#ffffff6b;background:#ffffff12}.practice-step small{font-size:8px;letter-spacing:1.2px;opacity:.5}.practice-step strong{font-size:15px;font-weight:500;line-height:1.4}.practice-step em{font-style:normal;color:#ffffff9e;font-size:12px;line-height:1.4}.practice-step span{font-size:8px;letter-spacing:1.2px;opacity:.55}@media(max-width:800px){.practice-panel{left:3%;right:3%;bottom:72px;max-height:60vh}.practice-step strong{font-size:14px}}.word-visual-image{display:block;width:100%;height:100%;object-fit:contain;object-position:center;border-radius:14px}