:root{--cskh-bg:#071a3a;--cskh-panel:#0d2850;--cskh-panel2:#102f5c;--cskh-text:#f8fbff;--cskh-muted:#b9c9df;--cskh-cyan:#22d3c5;--cskh-purple:#a96bff;--cskh-pink:#ff5fa7;--cskh-yellow:#ffd84d;--cskh-green:#6ee7a6;--cskh-radius:24px}.cskh-app{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:radial-gradient(circle at 75% 5%,rgba(169,107,255,.18),transparent 30%),var(--cskh-bg);color:var(--cskh-text);min-height:100vh;line-height:1.55}.cskh-app *{box-sizing:border-box}.cskh-app a{text-decoration:none}.cskh-header{max-width:1200px;margin:auto;padding:20px 26px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(255,255,255,.08)}.cskh-brand{display:flex;align-items:center;gap:14px;color:white;font-weight:800}.cskh-brand img,.cskh-footer img{width:210px;max-height:58px;object-fit:contain}.cskh-brand span{padding:6px 10px;border:1px solid rgba(34,211,197,.45);border-radius:999px;color:var(--cskh-cyan)}.cskh-ghost{color:#fff;border:1px solid rgba(255,255,255,.18);padding:11px 16px;border-radius:14px}.cskh-app main{max-width:1200px;margin:auto;padding:34px 26px 70px}.cskh-hero{display:grid;grid-template-columns:1.35fr .65fr;align-items:center;gap:28px;background:linear-gradient(135deg,rgba(13,40,80,.96),rgba(16,47,92,.88));padding:46px;border:1px solid rgba(34,211,197,.22);border-radius:32px;box-shadow:0 25px 80px rgba(0,0,0,.25)}.cskh-kicker{color:var(--cskh-cyan);text-transform:uppercase;letter-spacing:.12em;font-weight:800;font-size:.82rem}.cskh-hero h1{font-size:clamp(2.4rem,6vw,5.2rem);line-height:.98;margin:.2em 0;color:white}.cskh-lead{font-size:1.14rem;color:var(--cskh-muted);max-width:720px}.cskh-ravi{width:100%;max-height:430px;object-fit:contain;filter:drop-shadow(0 25px 30px rgba(0,0,0,.32))}.cskh-actions{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0}.cskh-primary,.cskh-secondary{display:inline-flex;align-items:center;justify-content:center;min-height:52px;border-radius:15px;padding:12px 20px;font-weight:800;cursor:pointer}.cskh-primary{background:var(--cskh-cyan);color:#052c34}.cskh-secondary{background:transparent;color:white;border:1px solid rgba(255,255,255,.22)}.cskh-plan{display:flex;gap:10px;flex-wrap:wrap}.cskh-plan span{background:rgba(255,255,255,.07);padding:9px 12px;border-radius:12px;color:#dfeafb}.cskh-section{padding:70px 0 10px}.cskh-section h2{font-size:clamp(2rem,4vw,3.2rem);margin:.15em 0 .8em}.cskh-training-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}.cskh-card{background:linear-gradient(180deg,var(--cskh-panel2),var(--cskh-panel));border:1px solid rgba(255,255,255,.11);border-radius:var(--cskh-radius);padding:24px;min-height:260px;display:flex;flex-direction:column}.cskh-card:hover{transform:translateY(-3px);border-color:rgba(34,211,197,.45)}.cskh-card h3{font-size:1.55rem;margin:.4em 0}.cskh-card p{color:var(--cskh-muted)}.cskh-meta{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0 22px}.cskh-meta span{font-size:.83rem;border-radius:999px;padding:6px 9px;background:rgba(255,255,255,.07)}.cskh-card .cskh-primary{margin-top:auto}.cskh-safe{display:grid;grid-template-columns:1fr 1fr;gap:30px;background:rgba(255,255,255,.04);padding:34px;border-radius:var(--cskh-radius);margin-top:60px}.cskh-safe li{margin:10px 0;color:var(--cskh-muted)}.cskh-footer{max-width:1200px;margin:auto;padding:32px 26px;display:flex;justify-content:space-between;align-items:center;border-top:1px solid rgba(255,255,255,.08);color:var(--cskh-muted)}.cskh-loading{padding:30px;background:rgba(255,255,255,.05);border-radius:18px}.cskh-training-shell{max-width:1200px;margin:auto;padding:24px}.cskh-training-nav{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:22px}.cskh-training-nav button{background:rgba(255,255,255,.07);color:#fff;border:1px solid rgba(255,255,255,.12);padding:11px 14px;border-radius:13px;cursor:pointer}.cskh-training-home,.cskh-lesson-view{background:linear-gradient(160deg,var(--cskh-panel2),var(--cskh-panel));border:1px solid rgba(34,211,197,.18);border-radius:28px;padding:32px}.cskh-progress{height:12px;background:rgba(255,255,255,.1);border-radius:999px;overflow:hidden}.cskh-progress i{display:block;height:100%;background:linear-gradient(90deg,var(--cskh-cyan),var(--cskh-purple));width:0}.cskh-lessons{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin-top:24px}.cskh-lesson-card{background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.1);border-radius:20px;padding:20px}.cskh-step{padding:18px 0}.cskh-step h2{font-size:2rem}.cskh-step-copy{font-size:1.12rem;color:#dce7f7;max-width:760px}.cskh-options{display:grid;gap:10px;margin:20px 0}.cskh-option{padding:15px;border-radius:14px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);color:#fff;text-align:left;cursor:pointer}.cskh-option.is-correct{border-color:var(--cskh-green);background:rgba(110,231,166,.12)}.cskh-option.is-wrong{border-color:var(--cskh-pink);background:rgba(255,95,167,.11)}.cskh-feedback{min-height:36px;font-weight:700}.cskh-step-controls{display:flex;justify-content:space-between;gap:12px;margin-top:26px}.cskh-step-controls button{min-height:50px;padding:12px 18px;border-radius:14px;border:0;font-weight:800;cursor:pointer}.cskh-step-controls button:disabled{opacity:.4;cursor:not-allowed}.cskh-typing{width:100%;min-height:110px;padding:16px;border-radius:14px;border:2px solid rgba(34,211,197,.3);font-size:1.05rem}.cskh-badge-row{display:flex;gap:12px;flex-wrap:wrap}.cskh-badge{padding:12px 15px;border-radius:15px;background:rgba(255,216,77,.13);border:1px solid rgba(255,216,77,.3)}@media(max-width:760px){.cskh-hero{grid-template-columns:1fr;padding:28px}.cskh-ravi{max-height:300px}.cskh-safe{grid-template-columns:1fr}.cskh-header,.cskh-footer{align-items:flex-start;gap:15px;flex-direction:column}.cskh-brand img,.cskh-footer img{width:185px}.cskh-app main{padding-inline:16px}.cskh-training-shell{padding:14px}.cskh-training-home,.cskh-lesson-view{padding:22px}}
.cskh-account{display:flex;align-items:center;gap:12px}.cskh-login-section,.cskh-free{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:start}.cskh-form-card{background:linear-gradient(180deg,var(--cskh-panel2),var(--cskh-panel));border:1px solid rgba(34,211,197,.25);border-radius:var(--cskh-radius);padding:26px;display:grid;gap:15px}.cskh-form-card h3{font-size:1.6rem;margin:0}.cskh-form-card label{display:grid;gap:7px;font-weight:700}.cskh-form-card input,.cskh-form-card select{width:100%;min-height:50px;border-radius:13px;border:1px solid rgba(255,255,255,.2);background:#fff;color:#10213c;padding:11px 13px;font-size:1rem}.cskh-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.cskh-check{grid-template-columns:auto 1fr!important;align-items:start;font-weight:500!important}.cskh-check input{width:22px!important;min-height:22px!important}.cskh-form-note{color:var(--cskh-muted);font-size:.9rem}.cskh-alert,.cskh-success{padding:11px 13px;border-radius:12px}.cskh-alert{background:rgba(255,95,167,.14);border:1px solid rgba(255,95,167,.35)}.cskh-success{background:rgba(110,231,166,.13);border:1px solid rgba(110,231,166,.35)}.cskh-next-group{display:grid;gap:3px;background:rgba(34,211,197,.09);border:1px solid rgba(34,211,197,.22);padding:12px;border-radius:14px;margin:3px 0 16px}.cskh-next-group small{color:var(--cskh-muted)}.cskh-next-group.is-muted{color:var(--cskh-muted);background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.09)}.cskh-text-link{color:var(--cskh-cyan);margin-top:12px;font-weight:700}.cskh-mini-demo{margin-top:22px;padding:20px;border-radius:20px;background:rgba(255,255,255,.05)}.cskh-demo-options{display:flex;gap:10px;flex-wrap:wrap}.cskh-demo-options button{min-height:50px;padding:12px 16px;border-radius:14px;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.08);color:white;cursor:pointer}.cskh-standalone{padding:30px;min-height:auto}.cskh-standalone>.cskh-form-card{max-width:820px;margin:auto}@media(max-width:760px){.cskh-login-section,.cskh-free,.cskh-form-grid{grid-template-columns:1fr}.cskh-account{flex-wrap:wrap}}
/* Version 1.1.1 visual demo additions */
.cskh-section-intro{max-width:760px;color:var(--cskh-muted);margin:-12px 0 24px}
.cskh-card{overflow:hidden;padding:0}
.cskh-card-art{min-height:230px;display:flex;align-items:flex-end;justify-content:center;padding:14px 14px 0;background:radial-gradient(circle at 65% 8%,rgba(34,211,197,.16),transparent 35%)}
.cskh-card-art img{width:100%;height:250px;object-fit:contain;object-position:center bottom;filter:drop-shadow(0 20px 24px rgba(0,0,0,.28))}
.cskh-card-body{display:flex;flex-direction:column;flex:1;padding:22px 24px 24px}
.cskh-guidance{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:center;background:linear-gradient(160deg,rgba(16,47,92,.92),rgba(13,40,80,.96));padding:34px!important;border:1px solid rgba(34,211,197,.2);border-radius:var(--cskh-radius);margin-top:65px}
.cskh-guidance h2{margin:.15em 0 .4em}.cskh-guidance p{color:var(--cskh-muted)}
.cskh-guidance img{width:100%;max-height:390px;object-fit:contain;filter:drop-shadow(0 24px 28px rgba(0,0,0,.28))}
.cskh-training-intro{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:center}
.cskh-training-art{width:100%;max-height:420px;object-fit:contain;filter:drop-shadow(0 24px 30px rgba(0,0,0,.3))}
@media(max-width:760px){.cskh-guidance,.cskh-training-intro{grid-template-columns:1fr}.cskh-card-art img{height:220px}.cskh-guidance{padding:24px!important}}