:root{--brand: #2f80ed;--brand-dark: #1f6fe0;--brand-tint: #e8f1fe;--ink: #0f172a;--ink-2: #334155;--muted: #64748b;--line: #e6eaf0;--bg: #f7f9fc;--card: #ffffff;--ok: #16a34a;--warn: #d97706;--danger: #dc2626;--radius: 16px;--radius-sm: 10px;--shadow: 0 6px 24px rgba(15, 23, 42, .06);--shadow-lg: 0 12px 40px rgba(15, 23, 42, .1);--font: "Poppins", system-ui, -apple-system, Segoe UI, Roboto, sans-serif}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button{font-family:inherit;cursor:pointer}h1,h2,h3,h4{margin:0 0 .5rem;line-height:1.15}.container{max-width:1180px;margin:0 auto;padding:0 20px}.section{padding:40px 0}.row{display:flex;gap:12px;align-items:center}.between{justify-content:space-between}.wrap{flex-wrap:wrap}.grow{flex:1}.center{text-align:center}.muted{color:var(--muted)}.small{font-size:.85rem}.stack{display:flex;flex-direction:column;gap:14px}.h-hero{font-size:clamp(1.8rem,4vw,2.6rem);font-weight:800;letter-spacing:-.5px}.accent{color:var(--brand)}.btn{border:1px solid transparent;background:var(--brand);color:#fff;padding:10px 18px;border-radius:999px;font-weight:600;font-size:.95rem;transition:background .15s,transform .05s,box-shadow .15s;display:inline-flex;align-items:center;gap:8px}.btn:hover{background:var(--brand-dark)}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn.ghost{background:#fff;color:var(--ink);border-color:var(--line)}.btn.ghost:hover{border-color:var(--brand);color:var(--brand)}.btn.danger{background:var(--danger)}.btn.ok{background:var(--ok)}.btn.sm{padding:7px 13px;font-size:.85rem}.btn.block{width:100%;justify-content:center}.chips{display:flex;flex-wrap:wrap;gap:10px}.chip{border:1.5px solid var(--line);background:#fff;color:var(--ink-2);padding:8px 18px;border-radius:999px;font-weight:500;font-size:.92rem;transition:all .15s}.chip:hover{border-color:var(--brand);color:var(--brand)}.chip.active{background:var(--brand);border-color:var(--brand);color:#fff}.search{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:12px 20px;box-shadow:var(--shadow);min-width:260px}.search input{border:none;outline:none;flex:1;font-size:1rem;font-family:inherit;background:transparent}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.card.pad{padding:20px}.grid{display:grid;gap:26px}.grid.cards{grid-template-columns:repeat(3,1fr)}@media (max-width: 900px){.grid.cards{grid-template-columns:repeat(2,1fr)}}@media (max-width: 600px){.grid.cards{grid-template-columns:1fr}}.course-card{cursor:pointer;transition:transform .15s,box-shadow .15s}.course-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}.course-thumb{aspect-ratio:16 / 10;border-radius:14px;overflow:hidden;background:#dbe6f5;display:flex;align-items:center;justify-content:center;color:#7c93b3;font-weight:700}.course-thumb img{width:100%;height:100%;object-fit:cover}.course-title{font-weight:700;font-size:1.02rem;margin:12px 2px 4px;line-height:1.3}.course-meta{font-size:.8rem;color:var(--muted);padding:0 2px 4px}.price-tag{font-weight:700;color:var(--brand)}label{font-weight:600;font-size:.88rem;display:block;margin-bottom:6px}.input,select,textarea{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);font-family:inherit;font-size:.95rem;outline:none;background:#fff;color:var(--ink)}.input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-tint)}.field{margin-bottom:14px}.nav{position:sticky;top:0;z-index:40;background:#ffffffe6;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.nav-inner{display:flex;align-items:center;justify-content:space-between;height:82px}.brand{font-weight:800;font-size:1.25rem}.nav-links{display:flex;align-items:center;gap:22px}.nav-links a{font-weight:500;color:var(--ink-2)}.nav-links a:hover,.nav-links a.active{color:var(--brand)}.badge{display:inline-block;padding:4px 10px;border-radius:999px;font-size:.75rem;font-weight:600}.badge.gray{background:#eef2f7;color:var(--muted)}.badge.blue{background:var(--brand-tint);color:var(--brand)}.badge.green{background:#dcfce7;color:var(--ok)}.badge.amber{background:#fef3c7;color:var(--warn)}.badge.red{background:#fee2e2;color:var(--danger)}.table{width:100%;border-collapse:collapse}.table th,.table td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);font-size:.9rem}.table th{color:var(--muted);font-weight:600}.hero{background:linear-gradient(120deg,#0f2a5e,#1f6fe0);color:#fff;border-radius:24px;padding:46px;margin:24px 0}.hero h1{font-size:clamp(1.9rem,4vw,3rem);font-weight:800}.admin{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.side{background:#0f172a;color:#cbd5e1;padding:22px 14px}.side .brand{color:#fff;padding:0 10px 18px}.side a{display:block;padding:10px 14px;border-radius:10px;color:#cbd5e1;font-weight:500;font-size:.92rem;margin-bottom:3px}.side a:hover{background:#1e293b;color:#fff}.side a.active{background:var(--brand);color:#fff}.admin-main{padding:28px;overflow:auto}@media (max-width: 800px){.admin{grid-template-columns:1fr}.side{display:none}}.player{display:grid;grid-template-columns:1fr 320px;gap:20px}@media (max-width: 900px){.player{grid-template-columns:1fr}}.lesson-item{padding:10px 12px;border-radius:10px;cursor:pointer;font-size:.9rem;display:flex;gap:8px;align-items:center}.lesson-item:hover{background:var(--brand-tint)}.lesson-item.locked{opacity:.5;cursor:not-allowed}.lesson-item.active{background:var(--brand-tint);color:var(--brand);font-weight:600}.spinner{width:34px;height:34px;border:3px solid var(--line);border-top-color:var(--brand);border-radius:50%;animation:spin .8s linear infinite;margin:40px auto}@keyframes spin{to{transform:rotate(360deg)}}.notice{padding:12px 16px;border-radius:10px;font-size:.9rem}.notice.error{background:#fee2e2;color:var(--danger)}.notice.info{background:var(--brand-tint);color:var(--brand-dark)}.notice.ok{background:#dcfce7;color:var(--ok)}.divider{height:1px;background:var(--line);margin:18px 0}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a80;display:flex;align-items:center;justify-content:center;z-index:60;padding:20px}.modal{background:#fff;border-radius:var(--radius);padding:24px;width:100%;max-width:560px;max-height:90vh;overflow:auto}.footer{background:#f7fbff;color:var(--muted);padding:56px 0 40px;margin-top:30px;border-top:1px solid var(--line);text-align:center}.footer .thanks{font-size:clamp(2.2rem,5vw,3.4rem);font-weight:700;color:var(--ink);letter-spacing:-1px}.footer .foot-logo{height:56px;margin:14px auto 0}.footer a{color:var(--brand)}.brand-logo{height:62px;display:block}.brand-wordmark .l1{color:var(--brand)}.brand-wordmark .l2{color:#ef5b3f}.brand-wordmark .l3{color:var(--ink)}.home-hero{background:#f2f5f8}.home-hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:center;padding:40px 0 30px}.home-hero h1{font-size:clamp(2rem,4.4vw,3.5rem);font-weight:800;letter-spacing:-1.5px;line-height:1.05;color:var(--ink)}.hero-red{color:#ef5b3f;border-bottom:5px solid #ef5b3f;border-radius:2px;padding-bottom:2px}.hero-sub{color:var(--ink-2);font-size:1.02rem;max-width:520px;margin:18px 0 24px;line-height:1.6}.hero-cta{display:flex;gap:14px;flex-wrap:wrap}.hero-stats{display:flex;gap:44px;margin-top:34px;flex-wrap:wrap}.hero-stat .num{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;line-height:1}.hero-stat .num.p{color:#7c3aed}.hero-stat .num.b{color:var(--brand)}.hero-stat .num.o{color:#ef5b3f}.hero-stat .lbl{font-weight:600;font-size:.9rem;margin-top:8px;color:var(--ink)}.home-hero-img{display:flex;justify-content:center}.home-hero-img img{width:100%;max-width:560px}@media (max-width: 860px){.home-hero-inner{grid-template-columns:1fr}.home-hero-img{order:-1;max-width:420px;margin:0 auto}}.earning{background:linear-gradient(180deg,#fff,#eef5fc);padding:54px 0}.earning-head{text-align:center;margin-bottom:34px}.earning-head h2{font-size:clamp(1.7rem,3.5vw,2.4rem);font-weight:800}.earning-head p{color:var(--muted);font-weight:600;letter-spacing:2px;text-transform:uppercase;font-size:.85rem}.pkg-card{background:#fff;border-radius:22px;box-shadow:var(--shadow);overflow:hidden;margin:0 auto 34px;max-width:1000px}.pkg-head{color:#fff;text-align:center;padding:22px;font-size:clamp(1.4rem,3vw,1.9rem);font-weight:800;background:var(--brand)}.pkg-head.gold{background:linear-gradient(90deg,#e29a2e,#f5c451)}.pkg-body{padding:30px}.pkg-pills{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}.pkg-pill{background:var(--brand);color:#fff;padding:9px 18px;border-radius:999px;font-size:.9rem;font-weight:500}.pkg-card.gold .pkg-pill{background:#e8f1fe;color:var(--brand-dark)}.pkg-cta{display:block;width:100%;background:#d9614e;color:#fff;border:none;padding:15px;border-radius:999px;font-size:1.05rem;font-weight:600;margin-top:26px;text-align:center;transition:background .15s}.pkg-cta:hover{background:#c9503d}.pkg-price{text-align:center;font-weight:800;font-size:1.05rem;margin-top:12px;color:var(--ink)}