body:has(.classroom-page),html:has(.classroom-page){overflow:auto;height:auto}.classroom-page{--cl-ink:#0f172a;--cl-text:#334155;--cl-muted:#64748b;--cl-line:#e2e8f0;--cl-soft:#f8fafc;--cl-ok:#15803d;--cl-warn:#b45309;--cl-err:#b91c1c;min-height:100vh;background:#f4f6f8;color:var(--cl-text);font-size:16px;line-height:1.6;-webkit-user-select:text;-moz-user-select:text;user-select:text}.classroom-page *,.classroom-page :after,.classroom-page :before{box-sizing:border-box}.classroom-page a{color:var(--primary-dark)}.cl-top{display:flex;align-items:center;justify-content:space-between;gap:12px;max-width:1040px;margin:0 auto;padding:16px 16px 0}.cl-logo img{display:block;height:40px;width:auto}.cl-top-links{display:flex;align-items:center;gap:16px;font-size:14px}.cl-top-links a{color:var(--cl-text);text-decoration:none}.cl-top-links a:hover{color:var(--primary-color)}.cl-main{max-width:1040px;margin:0 auto;padding:8px 16px 48px}.cl-hero{text-align:center;padding:40px 0 28px;max-width:760px;margin:0 auto}.cl-eyebrow{display:inline-block;margin:0 0 14px;padding:4px 12px;border-radius:999px;background:rgba(var(--primary-rgb),.1);color:var(--primary-dark);font-size:13px;font-weight:600;letter-spacing:.02em}.cl-hero h1{margin:0 0 14px;color:var(--cl-ink);font-size:clamp(28px,5vw,42px);line-height:1.15;font-weight:700;letter-spacing:-.01em;text-wrap:balance}.cl-lead{margin:0 auto 24px;font-size:18px;color:var(--cl-text);text-wrap:pretty}.cl-hero-actions{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:12px 20px}.cl-hero-note{margin:14px 0 0;font-size:13px;color:var(--cl-muted)}.cl-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:12px 22px;border:0;border-radius:10px;font:inherit;font-weight:700;font-size:16px;line-height:1.2;text-decoration:none;cursor:pointer;transition:background-color .15s ease,transform .15s ease}.classroom-page .cl-btn-primary{background:var(--primary-color);color:#fff}.cl-btn-primary:hover:not(:disabled){background:var(--primary-dark);transform:translateY(-1px)}.cl-btn:disabled{opacity:.6;cursor:not-allowed}.classroom-page .cl-btn-ghost{background:#fff;color:var(--cl-ink);border:1px solid var(--cl-line)}.cl-btn-ghost:hover:not(:disabled){border-color:var(--primary-color)}.cl-btn-block{width:100%}.cl-link{font-weight:600;text-decoration:underline;text-underline-offset:3px}.cl-section{margin-top:28px;padding:28px 24px;background:#fff;border:1px solid var(--cl-line);border-radius:16px}.cl-section h2{margin:0 0 18px;color:var(--cl-ink);font-size:22px;line-height:1.3;font-weight:700}.cl-note{margin:14px 0 0;font-size:14px;color:var(--cl-muted)}.cl-banner{margin:8px auto 0;max-width:760px;padding:12px 16px;border-radius:10px;background:#fffbeb;border:1px solid #fde68a;color:#78350f;font-size:15px;text-align:center}.cl-features{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));grid-gap:16px;gap:16px}.cl-feature{padding:18px;background:var(--cl-soft);border:1px solid var(--cl-line);border-radius:12px}.cl-feature i{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;background:rgba(var(--primary-rgb),.1);color:var(--primary-color);font-size:18px;margin-bottom:10px}.cl-feature h3{margin:0 0 6px;color:var(--cl-ink);font-size:16px;font-weight:700}.cl-feature p{margin:0;font-size:14px}.cl-plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));grid-gap:16px;gap:16px}.cl-plan{display:flex;flex-direction:column;gap:6px;padding:22px;border:2px solid var(--cl-line);border-radius:14px;background:#fff}.cl-plan-seats{font-size:17px}.cl-plan-price,.cl-plan-seats{margin:0;color:var(--cl-ink);font-weight:700}.cl-plan-price{font-size:40px;line-height:1.1;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.cl-plan-per,.cl-plan-period{margin:0;font-size:14px;color:var(--cl-muted)}.cl-plan .cl-btn{margin-top:12px}.cl-steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));grid-gap:16px;gap:16px;counter-reset:cl-step}.cl-steps li{position:relative;padding:18px 18px 18px 62px;background:var(--cl-soft);border:1px solid var(--cl-line);border-radius:12px;counter-increment:cl-step}.cl-steps li:before{content:counter(cl-step);position:absolute;left:18px;top:18px;width:30px;height:30px;border-radius:50%;background:var(--primary-color);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center}.cl-steps h3{margin:0 0 4px;color:var(--cl-ink);font-size:16px}.cl-steps p{margin:0;font-size:14px}.cl-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:14px 16px;gap:14px 16px}.cl-field{display:flex;flex-direction:column;gap:6px;min-width:0}.cl-field-wide{grid-column:1/-1}.cl-field label{color:var(--cl-ink);font-size:14px;font-weight:600}.cl-field input{width:100%;min-height:46px;padding:11px 14px;border:1px solid #cbd5e1;border-radius:10px;background:#fff;color:var(--cl-ink);font:inherit;font-size:16px}.cl-field input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(var(--primary-rgb),.15)}.cl-hint{margin:0;font-size:13px;color:var(--cl-muted)}.cl-plan-summary{grid-column:1/-1;margin:0;padding:12px 14px;border-radius:10px;background:rgba(var(--primary-rgb),.07);color:var(--cl-ink);font-weight:600}.cl-plan-summary.is-warn{background:#fffbeb;color:#78350f;font-weight:500}.cl-form-actions{grid-column:1/-1;display:flex;flex-direction:column;gap:10px}.cl-secure{margin:0;font-size:13px;color:var(--cl-muted);text-align:center}.cl-error{border-radius:10px;background:#fef2f2;border:1px solid #fecaca;color:var(--cl-err)}.cl-error,.cl-success-msg{margin:0;padding:10px 14px;font-size:14px}.cl-success-msg{border-radius:10px;background:#f0fdf4;border:1px solid #bbf7d0;color:var(--cl-ok)}.cl-code-row{display:flex;gap:10px;flex-wrap:wrap}.cl-code-row input{flex:1 1 200px;min-width:0;min-height:46px;padding:11px 14px;border:1px solid #cbd5e1;border-radius:10px;font-family:Menlo,Consolas,monospace;font-size:18px;letter-spacing:.08em;text-transform:uppercase;color:var(--cl-ink)}.cl-code-row input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(var(--primary-rgb),.15)}.cl-code-row .cl-btn{flex:0 0 auto}.cl-faq details{border-top:1px solid var(--cl-line);padding:14px 0}.cl-faq details:last-child{border-bottom:1px solid var(--cl-line)}.cl-faq summary{cursor:pointer;color:var(--cl-ink);font-weight:600;list-style-position:outside}.cl-faq details p{margin:8px 0 0;font-size:15px}.cl-footer{max-width:1040px;margin:0 auto;padding:0 16px 32px;display:flex;flex-wrap:wrap;gap:8px 18px;justify-content:center;font-size:13px}.cl-footer,.cl-footer a{color:var(--cl-muted)}.cl-card{max-width:620px;margin:32px auto 0;padding:32px 24px;background:#fff;border:1px solid var(--cl-line);border-radius:16px;text-align:center}.cl-card h1{margin:0 0 10px;color:var(--cl-ink);font-size:26px;line-height:1.25}.cl-card>p{margin:0 0 16px}.cl-card-icon{font-size:44px;margin-bottom:12px;color:var(--primary-color)}.cl-card-icon.is-ok{color:var(--cl-ok)}.cl-card-icon.is-warn{color:var(--cl-warn)}.cl-card .cl-code-row,.cl-card form{text-align:left}.cl-card-actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:18px}.cl-kv{text-align:left;margin:18px 0 0}.cl-kv-label{display:block;margin:0 0 6px;color:var(--cl-ink);font-size:14px;font-weight:600}.cl-copy-row{display:flex;gap:8px;align-items:stretch}.cl-copy-value{flex:1 1;min-width:0;display:flex;align-items:center;padding:10px 14px;border:1px solid var(--cl-line);border-radius:10px;background:var(--cl-soft);color:var(--cl-ink);font-size:15px;overflow-wrap:anywhere}.cl-copy-value.is-code{justify-content:center;font-family:Menlo,Consolas,monospace;font-size:clamp(22px,6vw,30px);font-weight:700;letter-spacing:.12em}.cl-copy-row .cl-btn{flex:0 0 auto;min-height:0;padding:10px 14px;font-size:14px}.cl-message{width:100%;min-height:112px;padding:10px 14px;border:1px solid var(--cl-line);border-radius:10px;background:var(--cl-soft);color:var(--cl-ink);font:inherit;font-size:14px;resize:vertical}.cl-facts{display:flex;flex-wrap:wrap;gap:8px 18px;justify-content:center;margin:18px 0 0;padding:0;list-style:none;font-size:14px;color:var(--cl-muted)}.cl-facts strong{color:var(--cl-ink)}.cl-muted{color:var(--cl-muted);font-size:14px}@media (max-width:640px){.cl-hero{padding-top:24px}.cl-section{padding:22px 16px;border-radius:14px}.cl-form{grid-template-columns:minmax(0,1fr)}.cl-card{padding:24px 16px}.cl-top-links .cl-hide-sm{display:none}}