:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--ink-950:#102a2a;--ink-850:#173f3d;--ink-700:#285a57;--ink-600:#456e6b;--paper-0:#fff;--paper-50:#f8fbfa;--paper-100:#eff8f6;--paper-200:#e3f1ee;--teal-800:#06665f;--teal-700:#087c73;--teal-600:#0d9488;--teal-300:#5eead4;--amber-700:#b45309;--amber-600:#d97706;--amber-100:#fef3c7;--red-700:#b91c1c;--red-100:#fee2e2;--blue-focus:#0b6fff;--border:#cce4df;--border-strong:#91c7c0;--font-display:"Microsoft YaHei UI", "PingFang SC", "Noto Sans CJK SC", sans-serif;--font-body:"Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;--font-data:"Cascadia Mono", "Microsoft YaHei UI", monospace;--shadow-panel:0 12px 40px #102a2a14;--shadow-raised:0 20px 60px #102a2a29;--radius-control:10px;--radius-panel:16px;--radius-feature:24px;--content:1240px;--motion:.2s cubic-bezier(.2, .8, .2, 1)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper-50);color:var(--ink-950);font-family:var(--font-body);-webkit-font-smoothing:antialiased;margin:0;font-size:16px;line-height:1.55}button,input,select,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button:not(:disabled),a,select{cursor:pointer}a{color:inherit;text-decoration:none}img{display:block}h1,h2,h3,p{margin-top:0}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--blue-focus);outline-offset:3px}button:disabled,.is-disabled{cursor:not-allowed;opacity:.52}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.skip-link{z-index:1000;background:var(--paper-0);border:2px solid var(--teal-700);border-radius:8px;padding:10px 14px;position:fixed;top:-80px;left:16px}.skip-link:focus{top:16px}.eyebrow{color:var(--teal-700);font:700 .74rem/1.2 var(--font-data);letter-spacing:.14em;text-transform:uppercase;margin-bottom:10px}.brand-mark{font:700 1.16rem/1 var(--font-display);letter-spacing:-.03em;align-items:center;gap:10px;display:inline-flex}.brand-mark__icon{background:var(--ink-950);color:var(--teal-300);border-radius:9px 9px 3px;justify-content:center;align-items:center;width:36px;height:36px;display:inline-flex}.button{border-radius:var(--radius-control);min-height:44px;transition:background var(--motion), border-color var(--motion), color var(--motion), box-shadow var(--motion), transform var(--motion);border:1px solid #0000;justify-content:center;align-items:center;gap:9px;padding:10px 17px;font-weight:700;display:inline-flex}.button:not(:disabled):active{transform:translateY(1px)}.button--primary{background:var(--teal-700);color:#fff;box-shadow:0 8px 18px #087c732e}.button--primary:hover:not(:disabled){background:var(--teal-800);box-shadow:0 10px 24px #087c7340}.button--outline{background:var(--paper-0);border-color:var(--border-strong);color:var(--ink-850)}.button--outline:hover:not(:disabled){border-color:var(--teal-700);color:var(--teal-700)}.button--ghost{color:var(--ink-700);background:0 0}.button--ghost:hover:not(:disabled){background:var(--paper-100);color:var(--ink-950)}.button--large{min-height:52px;padding:13px 21px}.button--wide{width:100%}.icon-button{color:var(--ink-600);background:0 0;border:0;border-radius:8px;justify-content:center;align-items:center;width:40px;height:40px;padding:0;display:inline-flex}.icon-button:hover:not(:disabled){background:var(--paper-200);color:var(--ink-950)}.spin{animation:.9s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.section-shell{max-width:var(--content);margin:0 auto;padding-left:32px;padding-right:32px}.marketing-page{background:var(--paper-50);min-height:100vh;overflow:hidden}.marketing-nav{max-width:var(--content);grid-template-columns:1fr auto 1fr;align-items:center;gap:28px;min-height:82px;margin:0 auto;padding:0 32px;display:grid}.marketing-nav nav{gap:28px;display:flex}.marketing-nav nav a{color:var(--ink-600);font-size:.94rem;font-weight:600}.marketing-nav nav a:hover{color:var(--teal-700)}.marketing-nav__actions{justify-content:flex-end;gap:4px;display:flex}.hero{grid-template-columns:minmax(0,1.03fr) minmax(420px,.97fr);align-items:center;gap:clamp(40px,7vw,92px);min-height:calc(100vh - 82px);padding-top:68px;padding-bottom:92px;display:grid}.hero__copy h1{font:700 clamp(3.2rem, 6.3vw, 6.6rem)/.98 var(--font-display);letter-spacing:-.075em;max-width:760px;margin-bottom:30px}.hero__copy h1 span{color:var(--teal-700);display:block}.hero__lead{color:var(--ink-600);max-width:650px;font-size:clamp(1.05rem,1.6vw,1.28rem);line-height:1.75}.hero__actions{flex-wrap:wrap;gap:12px;margin:34px 0 24px;display:flex}.hero__note{color:var(--ink-600);align-items:center;gap:8px;margin:0;font-size:.9rem;display:flex}.hero-console{color:#fff;background:#0e2928;border:1px solid #27504d;border-radius:28px;min-height:565px;padding:24px;position:relative;overflow:hidden;box-shadow:0 42px 80px #0e292847}.hero-console:after{background:var(--amber-600);content:"";filter:blur(90px);opacity:.14;border-radius:50%;width:190px;height:190px;position:absolute;top:130px;right:-40px}.hero-console__topline{color:#9dc3bf;font:600 .76rem/1 var(--font-data);letter-spacing:.05em;z-index:1;justify-content:space-between;display:flex;position:relative}.hero-console__topline span:first-child{align-items:center;gap:8px;display:flex}.hero-console__topline i{background:#4ade80;border-radius:50%;width:7px;height:7px;box-shadow:0 0 0 5px #4ade801a}.voice-orbit{justify-content:center;align-items:center;height:230px;margin-top:28px;display:flex;position:relative}.voice-orbit__ring{border:1px solid #5eead440;border-radius:50%;width:180px;height:180px;position:absolute}.voice-orbit__ring:before,.voice-orbit__ring:after{border-radius:inherit;content:"";border:1px solid #5eead421;position:absolute;inset:-26px}.voice-orbit__ring:after{inset:-55px}.voice-orbit__core{background:var(--teal-300);color:var(--ink-950);z-index:1;border-radius:50%;justify-content:center;align-items:center;width:88px;height:88px;display:flex;position:relative;box-shadow:0 0 0 12px #5eead417,0 20px 40px #0003}.voice-transcript{font:700 clamp(1.35rem, 2.1vw, 1.9rem)/1.4 var(--font-display);text-align:center;margin:2px 0 20px}.score-confirmation{z-index:1;background:#ffffff14;border:1px solid #ffffff1c;border-radius:14px;grid-template-columns:42px 1fr auto;align-items:center;gap:12px;padding:15px;display:grid;position:relative}.score-confirmation>svg{color:#047857;background:#d1fae5;border-radius:50%;width:38px;height:38px;padding:9px}.score-confirmation div{flex-direction:column;display:flex}.score-confirmation strong{font-size:.95rem}.score-confirmation span{color:#9dc3bf;font-size:.76rem}.score-confirmation b{color:#fbbf24;font:700 1.55rem/1 var(--font-data)}.growth-rail{z-index:1;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;margin-top:28px;display:grid;position:relative}.growth-rail span{color:#9dc3bf;font-size:.76rem}.growth-rail>div{background:#ffffff1a;border-radius:10px;height:8px;overflow:hidden}.growth-rail i{background:var(--amber-600);border-radius:inherit;height:100%;display:block}.growth-rail strong{font:700 .82rem/1 var(--font-data)}.principle-strip{background:var(--ink-950);color:#d6efeb;font:600 .82rem/1 var(--font-data);letter-spacing:.07em;text-transform:uppercase;justify-content:center;align-items:center;gap:28px;min-height:72px;display:flex}.principle-strip i{background:var(--teal-300);opacity:.7;border-radius:50%;width:4px;height:4px}.how-section{padding-top:120px;padding-bottom:120px}.section-heading{max-width:760px}.section-heading h2,.pet-story h2,.final-cta h2{font:700 clamp(2.2rem, 4vw, 4rem)/1.12 var(--font-display);letter-spacing:-.055em;margin-bottom:20px}.section-heading>p:last-child,.pet-story__copy>p{color:var(--ink-600);font-size:1.08rem}.process-list{border-top:1px solid var(--border);margin:58px 0 0;padding:0;list-style:none}.process-list li{border-bottom:1px solid var(--border);min-height:148px;transition:background var(--motion), padding var(--motion);grid-template-columns:74px 1fr auto;align-items:center;gap:28px;padding:24px 8px;display:grid}.process-list li:hover{background:var(--paper-0);padding-left:22px;padding-right:22px}.process-list li>span{color:var(--amber-700);font:700 .9rem/1 var(--font-data)}.process-list strong{font:700 1.35rem/1.3 var(--font-display);margin-bottom:7px;display:block}.process-list p{color:var(--ink-600);margin:0}.process-list svg{color:var(--teal-700)}.pet-story{border-bottom:1px solid var(--border);border-top:1px solid var(--border);background:#e6f3f0}.pet-story__inner{grid-template-columns:.82fr 1.18fr;align-items:center;gap:68px;min-height:690px;padding-top:90px;padding-bottom:90px;display:grid}.check-list{gap:13px;margin:30px 0 0;padding:0;list-style:none;display:grid}.check-list li{align-items:center;gap:10px;display:flex}.check-list svg{color:var(--teal-700)}.mascot-stage{grid-template-columns:repeat(3,1fr);align-items:end;min-height:430px;padding-bottom:52px;display:grid;position:relative}.mascot-stage .pet-avatar:nth-child(2){transform:translateY(-42px)}.mascot-stage__baseline{color:var(--ink-600);font:600 .72rem/1 var(--font-data);grid-template-columns:auto 1fr auto;align-items:center;gap:12px;display:grid;position:absolute;bottom:8px;left:0;right:0}.mascot-stage__baseline i{background:var(--border-strong);height:1px;position:relative}.mascot-stage__baseline i:after{background:var(--amber-600);content:"";border-radius:50%;width:8px;height:8px;position:absolute;top:-3px;right:0}.split-section{padding-top:120px;padding-bottom:130px}.section-heading--wide{max-width:900px}.mode-comparison{grid-template-columns:1fr 1fr;gap:20px;margin-top:56px;display:grid}.mode-comparison article{background:var(--paper-0);border:1px solid var(--border);border-radius:var(--radius-feature);min-height:370px;padding:34px}.mode-comparison__featured{color:#fff;background:var(--ink-950)!important;border-color:var(--ink-950)!important}.mode-comparison__icon{background:var(--paper-100);color:var(--teal-700);border-radius:12px;justify-content:center;align-items:center;width:52px;height:52px;margin-bottom:44px;display:flex}.mode-comparison__featured .mode-comparison__icon{color:var(--teal-300);background:#5eead41f}.mode-comparison h3{font:700 1.8rem/1.2 var(--font-display);margin-bottom:14px}.mode-comparison article>p:not(.eyebrow){color:var(--ink-600);min-height:94px}.mode-comparison__featured article,.mode-comparison__featured>p:not(.eyebrow){color:#b5d1ce!important}.mode-comparison a{color:var(--teal-700);align-items:center;gap:7px;margin-top:25px;font-weight:700;display:inline-flex}.mode-comparison__featured a{color:var(--teal-300)}.final-cta{max-width:calc(var(--content) - 64px);background:#efe1c8;justify-content:space-between;align-items:center;min-height:300px;margin:0 auto 38px;padding:54px;display:flex}.final-cta>div>svg{color:var(--amber-700);margin-bottom:18px}.final-cta h2{margin-bottom:8px}.final-cta p{color:var(--ink-600);margin:0}.final-cta__actions{flex-direction:column;align-items:stretch;gap:12px;display:flex}.marketing-footer{max-width:var(--content);grid-template-columns:1fr auto 1fr;align-items:center;min-height:110px;margin:auto;padding:0 32px;display:grid}.marketing-footer p{color:var(--ink-600);margin:0;font-size:.86rem}.marketing-footer>a{color:var(--teal-700);justify-self:end;font-weight:700}.pet-avatar{vertical-align:middle;flex:none;display:inline-block;position:relative;overflow:hidden}.pet-avatar img{transform-origin:0;width:300%;max-width:none;height:auto}.pet-avatar--small{width:42px;height:48px}.pet-avatar--small img{margin-top:-2px}.pet-avatar--medium{width:116px;height:142px}.pet-avatar--large{width:100%;height:330px}.auth-page{grid-template-columns:minmax(380px,.9fr) minmax(480px,1.1fr);min-height:100vh;display:grid}.auth-page__story{background:var(--ink-950);color:#fff;flex-direction:column;justify-content:space-between;min-height:100vh;padding:clamp(32px,5vw,72px);display:flex;position:relative}.auth-page__story:after{content:"";border:1px solid #5eead426;border-radius:50%;width:280px;height:280px;position:absolute;bottom:10%;right:-130px}.auth-page__story .brand-mark__icon{background:var(--teal-300);color:var(--ink-950)}.auth-page__story>div h1{font:700 clamp(2.7rem, 5vw, 5.2rem)/1.03 var(--font-display);letter-spacing:-.065em;max-width:720px}.auth-page__story>div>p:last-child{color:#afcfcb;max-width:560px;font-size:1.05rem}.auth-back{color:#a8c5c2;align-items:center;gap:8px;font-size:.9rem;display:inline-flex;position:absolute;top:26px;left:clamp(32px,5vw,72px)}.auth-page__story>.brand-mark{margin-top:28px}.auth-security{color:#a8c5c2;align-items:center;gap:8px;margin:0;font-size:.85rem;display:flex}.auth-page__panel{justify-content:center;align-items:center;padding:40px;display:flex}.auth-card{width:100%;max-width:440px}.auth-card h2{font:700 2.2rem/1.2 var(--font-display);letter-spacing:-.045em;margin-bottom:8px}.auth-card>p:not(.eyebrow):not(.auth-switch){color:var(--ink-600);margin-bottom:30px}.auth-form{gap:20px;display:grid}.auth-form label,.stack-form 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var(--font-display);letter-spacing:-.055em;margin:0}.app-header__actions{align-items:center;gap:10px;display:flex}.notice{border-radius:10px;align-items:center;gap:9px;margin-bottom:18px;padding:12px 14px;display:flex}.notice--error{background:var(--red-100);color:var(--red-700)}.notice--success{color:#05675f;background:#d9f7ee}.notice button{color:inherit;background:0 0;border:0;margin-left:auto;font-size:.8rem;font-weight:700}.dashboard-intro{border:1px solid var(--border);border-radius:var(--radius-feature);background:#e2f2ef;grid-template-columns:1fr minmax(300px,.42fr);align-items:center;gap:30px;min-height:240px;margin-bottom:38px;padding:32px;display:grid}.dashboard-intro>div:first-child{grid-template-columns:58px 1fr;display:grid}.dashboard-intro__icon{background:var(--ink-950);color:var(--teal-300);border-radius:14px;grid-row:1/4;justify-content:center;align-items:center;width:50px;height:50px;margin-right:18px;display:flex}.dashboard-intro h2{font:700 clamp(1.55rem, 2.4vw, 2.3rem)/1.25 var(--font-display);letter-spacing:-.04em;margin-bottom:8px}.dashboard-intro>div p:last-child{color:var(--ink-600);max-width:700px;margin:0}.desktop-prompt{background:var(--paper-0);border:1px solid var(--border);min-height:92px;transition:border var(--motion), box-shadow var(--motion);border-radius:13px;grid-template-columns:34px 1fr auto;align-items:center;gap:12px;padding:17px;display:grid}.desktop-prompt:hover{border-color:var(--teal-700);box-shadow:var(--shadow-panel)}.desktop-prompt>svg:first-child{color:var(--teal-700)}.desktop-prompt span{flex-direction:column;display:flex}.desktop-prompt small{color:var(--ink-600);font-size:.73rem}.section-row-heading,.panel-toolbar{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.section-row-heading h2,.panel-toolbar h2{font:700 1.35rem/1.2 var(--font-display);margin:0}.section-row-heading>span,.panel-toolbar p{color:var(--ink-600);margin:0;font-size:.84rem}.class-table{background:var(--paper-0);border:1px solid var(--border);border-radius:var(--radius-panel);overflow:hidden}.class-row{min-height:88px;transition:background var(--motion);align-items:center;display:flex}.class-row+.class-row{border-top:1px solid var(--border)}.class-row__open{flex:1;grid-template-columns:48px minmax(180px,1fr) minmax(130px,.45fr) minmax(145px,auto) 24px;align-items:center;gap:15px;min-width:0;padding:15px 8px 15px 20px;display:grid}.class-row:hover{background:var(--paper-100)}.class-row__monogram{background:var(--paper-200);color:var(--teal-700);border-radius:11px;justify-content:center;align-items:center;width:44px;height:44px;font-weight:700;display:flex}.class-row__name{flex-direction:column;display:flex}.class-row__name small,.student-identity small{color:var(--ink-600);font-size:.76rem}.class-row__students{color:var(--ink-600);align-items:center;gap:6px;font-size:.84rem;display:flex}.class-row__arrow{color:var(--teal-700)}.class-row__actions{gap:3px;padding-right:14px;display:flex}.class-row__actions .icon-button{color:var(--ink-600);background:0 0}.class-row__actions .icon-button:hover{background:var(--paper-200);color:var(--teal-700)}.class-list--archived{opacity:.86;margin-top:34px}.status-pill{color:#05675f;background:#d9f7ee;border-radius:20px;justify-self:start;padding:5px 9px;font-size:.75rem}.status-pill--warning{background:var(--amber-100);color:#92400e}.empty-state,.loading-state{background:var(--paper-0);border:1px dashed 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