@import"https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800&family=Sora:wght@500;600;700;800&display=swap";:root{--bg: #f5f8ff;--surface: #ffffff;--surface-soft: #eff4ff;--text: #10213f;--muted: #586985;--line: #d6def0;--primary: #0b6aff;--primary-ink: #ffffff;--secondary: #13b989;--accent: #ff7b39;--shadow-soft: 0 16px 30px rgba(14, 37, 78, .1)}*{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0;font-family:Outfit,Segoe UI,sans-serif;color:var(--text);background:radial-gradient(920px 540px at 0% -10%,#4e97ff33,#4e97ff00 60%),radial-gradient(900px 520px at 100% 0%,#14b88433,#14b88400 60%),var(--bg)}a{color:inherit;text-decoration:none}h1,h2,h3{margin:0;font-family:Sora,Outfit,sans-serif;letter-spacing:-.03em}p{margin:0}input,textarea,select{border:1px solid var(--line);border-radius:12px;background:#fcfdff;color:var(--text);padding:11px 12px;font:inherit;width:100%;transition:border-color .2s ease,box-shadow .2s ease}input:focus,textarea:focus,select:focus{outline:none;border-color:#79a9ff;box-shadow:0 0 0 4px #3687ff24}.site-root{min-height:100vh;display:grid;grid-template-rows:auto 1fr auto}.container{width:min(1160px,calc(100% - 34px));margin-inline:auto}.site-header{position:sticky;top:0;z-index:60;border-bottom:1px solid rgba(214,222,240,.9);background:#f5f8ffe0;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.header-content{min-height:78px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px}.brand{display:inline-flex;align-items:center;gap:10px}.brand-logo{width:44px;height:44px;object-fit:contain;border-radius:12px;border:1px solid rgba(181,204,244,.66);background:#fff;padding:4px}.brand-text{display:grid;gap:2px}.brand-text strong{font-size:1rem}.brand-text small{color:var(--muted);font-size:.75rem}.site-nav{justify-self:center;display:flex;flex-wrap:wrap;justify-content:center;gap:6px}.nav-link{padding:10px 12px;border-radius:999px;font-weight:600;color:#3c4e6e;transition:background .2s ease,color .2s ease,transform .2s ease}.nav-link:hover{background:#2976ff1f;color:var(--primary)}.nav-link.active{background:var(--primary);color:#fff}.menu-toggle{display:none;border:1px solid var(--line);border-radius:10px;width:40px;height:40px;background:#fff;cursor:pointer;padding:0;align-items:center;justify-content:center;gap:4px}.menu-toggle span{width:18px;height:2px;border-radius:2px;background:var(--text);display:block}.btn{border:1px solid transparent;border-radius:12px;padding:10px 14px;min-height:42px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;text-align:center;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease}.btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 8px 18px #09214e1f}.btn:disabled{opacity:.6;cursor:default}.btn.primary{background:linear-gradient(140deg,#0b6aff,#3a9eff);color:var(--primary-ink)}.btn.secondary{background:linear-gradient(140deg,#10b487,#38cf9a);color:#fff}.btn.ghost{border-color:var(--line);color:var(--text);background:#fff}.nav-mobile-cta{display:none}.home{display:grid;gap:62px;padding:28px 0 74px}.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:24px;align-items:stretch}.hero-copy{border:1px solid var(--line);border-radius:22px;background:linear-gradient(180deg,#fff,#f4f8ff);box-shadow:var(--shadow-soft);padding:clamp(20px,3vw,34px);display:grid;align-content:start;gap:16px;animation:rise-up .55s ease both}.kicker{display:inline-flex;width:fit-content;border:1px solid #c5d8fd;background:#fff;color:#2f5fb8;border-radius:999px;padding:5px 10px;font-size:.74rem;font-weight:700}.hero-copy h1{font-size:clamp(2rem,5vw,3.2rem);line-height:1.07}.hero-copy p{color:#445878;font-size:1.02rem}.hero-emotion{color:#1f3f70;font-weight:700;font-size:.96rem}.hero-actions{display:flex;flex-wrap:wrap;gap:10px}.hero-visual{border:1px solid #cce0fa;border-radius:22px;background:linear-gradient(150deg,#0c234f,#153874 55%,#1a5ca5);padding:14px;box-shadow:0 30px 44px #0b1b3947;display:grid;gap:10px;animation:rise-up .7s ease both}.visual-stage{position:relative;border-radius:16px;overflow:hidden;min-height:340px}.visual-stage img{width:100%;height:100%;min-height:340px;display:block;object-fit:cover;transition:transform .45s ease}.visual-stage:hover img{transform:scale(1.03)}.visual-overlay{position:absolute;left:0;right:0;bottom:0;padding:14px 14px 16px;background:linear-gradient(180deg,#07142e00,#07142edb 78%);color:#f2f6ff}.visual-overlay strong{font-size:1rem}.visual-overlay p{margin-top:5px;font-size:.84rem;color:#d8e4ff}.visual-thumbs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.thumb{border:1px solid rgba(189,214,255,.28);border-radius:12px;background:#e6f2ff1a;color:#d8e6ff;font-weight:700;padding:10px 8px;cursor:pointer;transition:transform .2s ease,border-color .2s ease,background .2s ease}.thumb:hover{transform:translateY(-1px)}.thumb.active{border-color:#8bc7ff;background:#3892ff52;color:#fff}.section{display:grid;gap:16px;animation:rise-up .6s ease both}.section-head{display:grid;gap:10px}.section-head h2{font-size:clamp(1.5rem,3.2vw,2.25rem)}.lead{color:var(--muted);max-width:920px;font-size:1.03rem}.three-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.info-card,.feature-card,.content-card{border:1px solid var(--line);border-radius:16px;background:var(--surface);padding:16px;box-shadow:0 12px 24px #142b5214;display:grid;gap:9px}.info-card h3,.feature-card h3,.content-card h3{font-size:1.05rem}.info-card p,.feature-card p,.content-card p{color:var(--muted);line-height:1.45}.panel{border:1px solid var(--line);border-radius:18px;padding:clamp(18px,2.5vw,28px);display:grid;gap:12px;box-shadow:0 14px 30px #142b5214}.parents-panel{background:linear-gradient(140deg,#fff,#f1f7ff 54%,#e8fff7)}.library-panel{background:linear-gradient(140deg,#fff,#fff5ea 56%,#fff0e6)}.archive-panel{margin-top:14px;background:linear-gradient(145deg,#fff,#f2f7ff)}.page-wrap{padding:34px 0 70px;display:grid;gap:24px;animation:rise-up .56s ease both}.page-head{display:grid;gap:12px}.page-head h1{font-size:clamp(1.9rem,4vw,2.8rem)}.page-head p{color:var(--muted);max-width:860px;font-size:1.02rem}.grid-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}.muted{color:var(--muted)}.signup-page{gap:18px}.signup-grid{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.25fr);gap:14px}.signup-showcase{border:1px solid #204c90;border-radius:20px;background:linear-gradient(145deg,#0d2a5c,#143f85 56%,#1b60aa);color:#eff6ff;padding:clamp(18px,2.8vw,26px);display:grid;align-content:start;gap:12px;box-shadow:0 22px 36px #0818354d}.signup-kicker{border-color:#bad3ff73;color:#fff;background:#e2eeff1f}.signup-showcase h2{font-size:clamp(1.35rem,2.8vw,2.05rem);color:#fff}.signup-showcase p{color:#d2e4ff}.signup-pill-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.signup-pill{border:1px solid rgba(181,209,255,.35);border-radius:12px;background:#daebff1f;padding:10px;display:grid;gap:4px}.signup-pill strong{font-size:1.04rem;color:#fff}.signup-pill span{color:#d5e5ff;font-size:.78rem}.signup-list{margin:2px 0 0;padding-left:18px;display:grid;gap:7px;color:#e2edff}.signup-contact{color:#f5f9ff;font-size:.92rem}.signup-contact a{text-decoration:underline}.signup-form-card{border:1px solid var(--line);border-radius:20px;background:var(--surface);box-shadow:var(--shadow-soft);padding:clamp(16px,2.5vw,24px);display:grid;gap:12px}.signup-form-head{display:grid;gap:6px}.signup-form-head h2{font-size:clamp(1.25rem,2.6vw,1.8rem)}.signup-form-head p{color:var(--muted)}.form-section{border:1px solid #e2e9f6;border-radius:14px;background:#fbfcff;padding:12px;display:grid;gap:10px}.form-section h3{font-size:.95rem}.form-grid-two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.form-field{display:grid;gap:6px;font-size:.83rem;font-weight:700}.form-field.wide{grid-column:1 / -1}.field-hint{color:var(--muted);font-size:.84rem}.password-meter{border:1px dashed #d4def2;border-radius:12px;padding:9px 10px;background:#fff;display:grid;gap:7px}.password-meter-row{display:flex;justify-content:space-between;gap:10px;align-items:center;font-size:.8rem}.password-track{width:100%;height:8px;border-radius:999px;background:#e7edfa;overflow:hidden}.password-fill{display:block;height:100%;border-radius:999px;transition:width .25s ease}.password-fill.weak{background:#f59a9a}.password-fill.medium{background:#f4bf6b}.password-fill.strong{background:#36b980}.strength-weak{color:#c12424}.strength-medium{color:#bb6d10}.strength-strong{color:#15824e}.consent-check{border:1px solid #dbe4f7;border-radius:12px;padding:10px;background:#f8fbff;display:flex;gap:10px;align-items:flex-start;font-size:.84rem}.consent-check input{width:16px;height:16px;margin-top:2px;padding:0;border-radius:5px;accent-color:var(--primary)}.signup-actions{display:flex;flex-wrap:wrap;gap:10px}.signup-success-toast{position:fixed;right:18px;bottom:18px;width:min(460px,calc(100vw - 36px));border:1px solid #d5e3ff;border-radius:16px;background:linear-gradient(165deg,#fff,#f2f8ff);box-shadow:0 24px 42px #05122f42;padding:14px;display:grid;gap:10px;z-index:100;animation:fade-in .2s ease}.signup-success-head{display:grid;grid-template-columns:auto 1fr auto;align-items:start;gap:10px}.signup-success-icon{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(145deg,#15b784,#39cf9b);color:#fff;font-size:.82rem;font-weight:700;letter-spacing:.02em}.signup-success-head strong{display:block;font-size:1rem;line-height:1.2}.signup-success-head p{margin-top:3px;color:var(--muted);font-size:.84rem}.signup-success-close{border:1px solid #d8e4fc;border-radius:8px;background:#fff;color:#365e8f;width:28px;height:28px;font-weight:700;cursor:pointer}.signup-success-email{font-weight:700;color:#1f3f70!important;background:#ebf3ff;border:1px solid #d0def8;border-radius:10px;padding:8px 10px;word-break:break-word}.signup-success-tags{display:flex;flex-wrap:wrap;gap:8px}.signup-success-tags span{border:1px solid #d4e3ff;border-radius:999px;padding:6px 10px;background:#fff;color:#305788;font-size:.76rem;font-weight:700}.signup-success-actions{display:flex;flex-wrap:wrap;gap:10px}.notice{border:1px solid #cde0ff;border-radius:12px;padding:10px 12px;font-size:.86rem;font-weight:600;margin:0}.notice.error{border-color:#f7c5c5;background:#fff2f2;color:#b71e1e}.notice.success{border-color:#bae9d0;background:#eefcf4;color:#0f7a42}.teacher-workspace{gap:16px}.teacher-topbar{border:1px solid var(--line);border-radius:16px;background:linear-gradient(135deg,#fff,#f4f8ff);padding:16px;display:grid;gap:12px}.teacher-identity{border:1px solid var(--line);border-radius:14px;background:#fff;padding:12px 14px;display:grid;gap:6px}.teacher-auth-card{border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:var(--shadow-soft);padding:16px;display:grid;gap:10px}.teacher-kpi-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:10px}.teacher-kpi-card{border:1px solid var(--line);border-radius:14px;background:#fff;padding:10px;display:grid;gap:5px}.teacher-kpi-card span{color:var(--muted);font-size:.76rem;font-weight:700}.teacher-kpi-card strong{font-size:1.25rem;font-family:Sora,Outfit,sans-serif}.teacher-kpi-card small{color:var(--muted)}.teacher-tab-row{display:flex;flex-wrap:wrap;gap:8px}.teacher-tab{border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--text);font-weight:700;padding:8px 12px;cursor:pointer}.teacher-tab.active{border-color:transparent;background:var(--primary);color:#fff}.teacher-panel{border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:0 12px 28px #0e254e14;padding:14px;display:grid;gap:12px}.teacher-panel h2,.teacher-panel h3{font-size:1.08rem}.teacher-layout-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:12px}.teacher-panel-head{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between}.teacher-search-input{width:min(320px,100%)}.teacher-overview-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.teacher-analytics-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.teacher-charts-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:12px}.teacher-period-switch{display:inline-flex;gap:6px;padding:4px;border:1px solid #d8e4fb;border-radius:999px;background:#f6faff}.teacher-period-btn{border:1px solid transparent;border-radius:999px;background:transparent;color:#365b89;font-size:.78rem;font-weight:700;padding:6px 10px;cursor:pointer}.teacher-period-btn.active{background:#0b6aff;color:#fff}.teacher-chart-card{display:grid;gap:10px}.teacher-line-stack{position:relative;border:1px solid #e2ebfb;border-radius:12px;background:linear-gradient(180deg,#fbfdff,#f5f9ff);overflow:hidden;min-height:120px}.teacher-line-chart{width:100%;height:120px;position:absolute;inset:0}.teacher-line-chart line{stroke:#e2eafa;stroke-width:1}.teacher-line-chart polyline{fill:none;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}.teacher-line-chart.completion polyline{stroke:#0b6aff}.teacher-line-chart.score polyline{stroke:#11c08f}.teacher-chart-legend{display:flex;flex-wrap:wrap;gap:10px;color:#4d668b;font-size:.77rem;font-weight:700}.teacher-chart-legend span{display:inline-flex;align-items:center;gap:6px}.teacher-chart-legend span:before{content:"";width:10px;height:10px;border-radius:999px;background:#9ab4df}.teacher-chart-legend span.completion:before{background:#0b6aff}.teacher-chart-legend span.score:before{background:#11c08f}.teacher-chart-foot{display:flex;justify-content:space-between;gap:8px;color:#60789d;font-size:.76rem;font-weight:700}.teacher-bar-chart{border:1px solid #e2ebfb;border-radius:12px;background:linear-gradient(180deg,#fbfdff,#f5f9ff);min-height:120px;padding:10px;display:grid;grid-auto-flow:column;grid-auto-columns:1fr;align-items:end;gap:5px}.teacher-bar-chart-col{height:100%;display:flex;align-items:end}.teacher-bar-chart-col i{display:block;width:100%;border-radius:8px 8px 2px 2px;min-height:2px;background:linear-gradient(180deg,#6db6ff,#0b6aff)}.teacher-insight-card{min-height:100%}.teacher-insight-list{display:grid;gap:10px}.teacher-insight-row{border:1px solid #e3ebfa;border-radius:12px;background:#fbfdff;padding:10px;display:grid;gap:7px}.teacher-insight-head{display:flex;align-items:center;justify-content:space-between;gap:8px}.teacher-insight-head strong{font-size:.9rem}.teacher-insight-head span{color:#355b8c;font-size:.76rem;font-weight:700;text-align:right}.teacher-insight-sub{margin:0;color:#5a6f90;font-size:.78rem}.teacher-insight-question{margin:0;color:#263e68;font-size:.82rem;line-height:1.38}.teacher-insight-meta{display:flex;flex-wrap:wrap;gap:8px;color:#627a9e;font-size:.74rem}.teacher-insight-bar{height:8px;border-radius:999px;background:#e8f0ff;overflow:hidden}.teacher-insight-bar span{display:block;height:100%;border-radius:inherit;background:linear-gradient(120deg,#0b6aff,#11c08f)}.teacher-insight-bar.weak span{background:linear-gradient(120deg,#ff7f47,#ffb33d)}.teacher-mini-card{border:1px solid #e2eaf7;border-radius:12px;background:#fbfdff;padding:12px;display:grid;gap:6px}.teacher-mini-card p{color:var(--muted)}.teacher-form-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;border:1px solid #e2eaf7;border-radius:12px;background:#fbfdff;padding:12px}.teacher-field{display:grid;gap:6px;font-size:.8rem;font-weight:700}.teacher-field-wide{grid-column:1 / -1}.teacher-inline-actions{display:flex;flex-wrap:wrap;gap:8px}.teacher-list{display:grid;gap:10px}.teacher-empty{border:1px dashed #d5e2f7;border-radius:12px;background:#f8fbff;color:#4f6283;padding:12px;margin:0}.teacher-item-card{border:1px solid var(--line);border-radius:12px;background:#fff;padding:12px;display:grid;grid-template-columns:1fr auto;gap:8px;align-items:start}.teacher-item-card p,.teacher-item-card small{color:var(--muted)}.teacher-item-title{display:grid;gap:6px}.teacher-item-actions{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}.teacher-meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.8rem;color:var(--muted)}.teacher-pill{border:1px solid #d7e4fb;border-radius:999px;background:#f4f8ff;color:#2f5282;font-weight:700;font-size:.74rem;padding:5px 10px}.teacher-link{color:#0b6aff;text-decoration:underline;text-underline-offset:2px}.teacher-question-list{display:grid;gap:10px}.teacher-question-card{border:1px solid #dfe8f8;border-radius:12px;background:#f9fcff;padding:10px;display:grid;gap:10px}.teacher-question-head{display:flex;align-items:center;justify-content:space-between;gap:8px}.teacher-option-list{display:grid;gap:8px}.teacher-option-row{display:grid;grid-template-columns:auto 1fr auto;gap:8px;align-items:center}.teacher-option-correct{display:inline-flex;align-items:center;gap:6px;color:#365786;font-size:.78rem;font-weight:700}.teacher-option-correct input{width:16px;height:16px;margin:0;padding:0;accent-color:var(--secondary)}.danger-outline{border-color:#f4bcbc!important;color:#a92929!important}.parent-tracking{gap:14px}.parent-form-card,.parent-student-card,.parent-panel{border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:0 12px 26px #0e254e14;padding:14px;display:grid;gap:10px}.parent-panel-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}.parent-toggle-btn{border:1px solid #d6e4ff;border-radius:999px;background:#f5f9ff;color:#345885;font-size:.78rem;font-weight:700;padding:6px 11px;cursor:pointer}.parent-toggle-btn:hover{background:#eaf2ff}.parent-toggle-btn:focus-visible{outline:2px solid #8db4ff;outline-offset:1px}.parent-collapsed-hint{margin:0;color:var(--muted);font-size:.85rem}.parent-form-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.parent-filter-row{display:grid;grid-template-columns:1.2fr 1fr auto;gap:10px;align-items:end}.parent-period-switch{display:inline-flex;gap:6px;padding:4px;border:1px solid #d8e4fb;border-radius:999px;background:#f6faff}.parent-period-btn{border:1px solid transparent;border-radius:999px;background:transparent;color:#365b89;font-size:.78rem;font-weight:700;padding:6px 10px;cursor:pointer}.parent-period-btn.active{background:#0b6aff;color:#fff}.parent-period-btn:disabled{opacity:.58;cursor:not-allowed}.parent-student-meta{display:flex;flex-wrap:wrap;gap:8px;color:#4e6384}.parent-student-meta span{border:1px solid #dfe9fa;border-radius:999px;background:#f8fbff;padding:4px 9px;font-size:.76rem;font-weight:700}.parent-student-card small{color:var(--muted)}.parent-charts-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:10px}.parent-chart-card{display:grid;gap:10px}.parent-line-stack{position:relative;border:1px solid #e2ebfb;border-radius:12px;background:linear-gradient(180deg,#fbfdff,#f5f9ff);overflow:hidden;min-height:120px}.parent-line-chart{width:100%;height:120px;position:absolute;inset:0}.parent-line-chart line{stroke:#e2eafa;stroke-width:1}.parent-line-chart polyline{fill:none;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}.parent-line-chart.time polyline{stroke:#0b6aff}.parent-line-chart.score 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