:root{
  --ink:#132238;--ink-2:#24405f;--muted:#66758b;--line:#e6ebf2;--bg:#f6f8fc;--panel:#ffffff;
  --navy:#10253f;--blue:#3558f4;--violet:#7c5cff;--cyan:#20b7d8;--green:#19a879;--warm:#ffb84d;
  --danger:#c94040;--radius:22px;--radius-sm:14px;--shadow:0 22px 70px rgba(17,34,56,.10);
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg);line-height:1.62;-webkit-font-smoothing:antialiased}a{color:inherit}button,input,textarea,select{font:inherit}
.site-header{height:78px;padding:0 5vw;display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(230,235,242,.9);position:sticky;top:0;z-index:50}.brand{display:flex;align-items:center;gap:11px;font-size:1.35rem;font-weight:900;color:var(--navy);text-decoration:none;letter-spacing:-.03em}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:14px;background:linear-gradient(145deg,var(--blue),var(--violet));box-shadow:0 10px 25px rgba(53,88,244,.24);color:#fff;font-size:.70rem;letter-spacing:-.04em}.brand span:last-child::after{content:"360";color:var(--blue);margin-left:2px}.site-header nav{display:flex;align-items:center;gap:20px}.site-header nav a{text-decoration:none;color:var(--ink-2);font-weight:750;font-size:.95rem}.site-header nav a:hover{color:var(--blue)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:13px;padding:13px 19px;background:linear-gradient(135deg,var(--blue),var(--violet));color:#fff!important;text-decoration:none;font-weight:850;cursor:pointer;box-shadow:0 10px 24px rgba(53,88,244,.18);transition:transform .2s ease,box-shadow .2s ease}.btn:hover{transform:translateY(-1px);box-shadow:0 14px 30px rgba(53,88,244,.25)}.btn-secondary{background:#fff;color:var(--ink)!important;border:1px solid var(--line);box-shadow:none}.btn-success{background:linear-gradient(135deg,#15966c,#27ba8b)}.btn-small{padding:9px 13px;border-radius:11px;font-size:.9rem}
.hero{position:relative;overflow:hidden;padding:98px 5vw 82px;background:radial-gradient(circle at 78% 14%,rgba(124,92,255,.17),transparent 26%),radial-gradient(circle at 8% 22%,rgba(32,183,216,.11),transparent 24%),linear-gradient(180deg,#fff 0%,#f7f9ff 100%)}.hero:after{content:"";position:absolute;width:460px;height:460px;border-radius:50%;border:1px solid rgba(53,88,244,.09);right:-180px;bottom:-220px}.hero-inner{max-width:1220px;margin:auto;display:grid;grid-template-columns:1.08fr .92fr;gap:64px;align-items:center;position:relative;z-index:1}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;text-transform:uppercase;letter-spacing:.14em;font-weight:900;color:var(--blue)}.eyebrow:before{content:"";width:24px;height:2px;background:currentColor;border-radius:10px}h1{font-size:clamp(3rem,6vw,5.7rem);line-height:.95;letter-spacing:-.06em;margin:.16em 0;color:var(--navy)}.hero h1 .gradient{background:linear-gradient(100deg,var(--blue),var(--violet),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}.hero p{font-size:1.19rem;color:var(--muted);max-width:690px;margin:18px 0 0}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.trust-row{display:flex;gap:20px;flex-wrap:wrap;margin-top:28px;color:var(--muted);font-size:.9rem;font-weight:700}.trust-row span{display:flex;align-items:center;gap:7px}.trust-row span:before{content:"✓";display:grid;place-items:center;width:21px;height:21px;border-radius:50%;background:#e9f8f3;color:var(--green);font-size:.75rem}
.hero-card{background:rgba(255,255,255,.92);border:1px solid rgba(230,235,242,.9);padding:18px;border-radius:30px;box-shadow:var(--shadow);transform:rotate(1deg)}.idea-orbit{height:385px;border-radius:24px;background:radial-gradient(circle at 30% 28%,rgba(255,255,255,.12),transparent 18%),linear-gradient(145deg,#10253f 5%,#3046a9 55%,#7c5cff 100%);display:grid;place-items:center;position:relative;overflow:hidden;color:#fff}.idea-orbit:before,.idea-orbit:after{content:"";position:absolute;border:1px solid rgba(255,255,255,.25);border-radius:50%;width:300px;height:300px}.idea-orbit:after{width:190px;height:190px}.brain{width:120px;height:120px;border-radius:34px;display:grid;place-items:center;background:rgba(255,255,255,.13);backdrop-filter:blur(10px);font-size:4.8rem;z-index:2;box-shadow:inset 0 0 0 1px rgba(255,255,255,.16)}.float-chip{position:absolute;background:#fff;color:var(--navy);padding:9px 12px;border-radius:12px;box-shadow:0 12px 30px rgba(0,0,0,.13);font-weight:800;font-size:.82rem;z-index:3}.chip-1{left:28px;top:44px}.chip-2{right:26px;top:92px}.chip-3{left:56px;bottom:34px}.hero-card-foot{display:flex;justify-content:space-between;gap:15px;align-items:center;margin-top:16px;padding:0 4px}.hero-card-foot strong{font-size:.95rem}
.section{padding:82px 5vw}.container{max-width:1220px;margin:auto}.section-head{display:flex;justify-content:space-between;gap:28px;align-items:end;margin-bottom:30px}.section h2{font-size:clamp(2rem,4vw,3.35rem);line-height:1.04;letter-spacing:-.045em;margin:.12em 0 .25em;color:var(--navy)}.lead{color:var(--muted);font-size:1.12rem;max-width:800px}.soft-section{background:linear-gradient(180deg,#f8faff,#f2f5fb)}.white-section{background:#fff}.dark-section{background:linear-gradient(145deg,#0e2036,#172f50);color:#fff;position:relative;overflow:hidden}.dark-section:before{content:"";position:absolute;width:420px;height:420px;background:rgba(124,92,255,.18);filter:blur(30px);border-radius:50%;right:-140px;top:-190px}.dark-section h2{color:#fff}.dark-section .lead{color:#c8d4e5}
.grid{display:grid;gap:20px}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px;box-shadow:0 8px 28px rgba(17,34,56,.045);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}.card:hover{transform:translateY(-3px);border-color:#d8def0;box-shadow:0 18px 42px rgba(17,34,56,.08)}.card h3{margin:12px 0 8px;color:var(--navy);letter-spacing:-.02em}.card p{color:var(--muted);margin-bottom:0}.icon-tile{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(145deg,#eef2ff,#f4efff);font-size:1.35rem}.tag{display:inline-block;padding:6px 10px;border-radius:999px;background:#eef1ff;color:#4255d9;font-size:.75rem;font-weight:900}.tag.green{background:#e7f7f1;color:#14805f}.tag.warm{background:#fff3dc;color:#9c6200}.tag.dark{background:rgba(255,255,255,.12);color:#fff}.age-card{position:relative;overflow:hidden}.age-card:after{content:"";position:absolute;width:110px;height:110px;border-radius:50%;background:linear-gradient(145deg,rgba(53,88,244,.06),rgba(124,92,255,.08));right:-42px;bottom:-42px}.course-card{position:relative}.course-card.locked{opacity:.6;filter:saturate(.7)}.course-number{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:#f1f4fb;font-weight:900;color:var(--blue);margin-bottom:14px}.course-meta{display:flex;justify-content:space-between;gap:10px;align-items:center}.progress{height:9px;border-radius:999px;background:#edf0f5;overflow:hidden}.progress>span{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--violet));border-radius:999px}.feature-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:24px;overflow:hidden}.feature-strip>div{background:#fff;padding:28px}.feature-strip strong{display:block;font-size:1.05rem;color:var(--navy);margin-bottom:5px}.feature-strip span{color:var(--muted);font-size:.94rem}
.pricing-box{max-width:760px;margin:auto;text-align:center;position:relative;z-index:1}.pricing-box .price{font-size:clamp(3rem,7vw,5rem);line-height:1;font-weight:950;letter-spacing:-.055em;margin:18px 0 8px}.pricing-box .price small{font-size:1rem;font-weight:700;color:#b9c8db;letter-spacing:0}.pricing-points{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin:24px 0 30px}.pricing-points span{padding:8px 11px;border-radius:999px;background:rgba(255,255,255,.08);color:#d6e0ee;font-size:.88rem;font-weight:700}
.dashboard{padding:48px 5vw 78px;background:linear-gradient(180deg,#f8faff,#f4f7fb)}.dashboard .container{max-width:1160px}.dashboard-hero{background:linear-gradient(135deg,#10253f,#3046a9);color:#fff;border-radius:26px;padding:30px;margin-bottom:24px;box-shadow:var(--shadow)}.dashboard-hero h2{color:#fff;margin:.2em 0;font-size:clamp(2rem,4vw,3rem)}.dashboard-hero .eyebrow{color:#9fdff0}.metric-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:28px}.metric{background:#fff;border:1px solid var(--line);border-radius:19px;padding:22px;box-shadow:0 8px 25px rgba(17,34,56,.04)}.metric strong{font-size:2rem;display:block;color:var(--navy);line-height:1.15;margin-top:6px}.metric .small{color:var(--muted)}
.auth-wrap{min-height:calc(100vh - 78px);display:grid;place-items:center;padding:48px 20px;background:radial-gradient(circle at 20% 15%,rgba(53,88,244,.1),transparent 28%),radial-gradient(circle at 80% 82%,rgba(124,92,255,.09),transparent 25%),#f7f9fd}.auth-card{width:min(540px,100%);background:#fff;padding:36px;border:1px solid var(--line);border-radius:26px;box-shadow:var(--shadow)}.auth-card h1{font-size:2.5rem;line-height:1.05;margin-top:0}.field{margin-bottom:17px}.field label{display:block;font-weight:800;margin-bottom:7px;color:var(--ink-2)}.field input,.field textarea,.field select{width:100%;padding:13px 14px;border:1px solid #ccd5e2;border-radius:12px;background:#fbfcfe;color:var(--ink);outline:none}.field input:focus,.field textarea:focus,.field select:focus{border-color:#8b9df8;box-shadow:0 0 0 4px rgba(53,88,244,.08);background:#fff}.notice{padding:14px 16px;border-radius:13px;background:#fff7e6;border:1px solid #f1d79c;margin:16px 0}.success{background:#ecfbf5;border-color:#b9ead9}.danger{background:#fff0f0;border-color:#f3c1c1}
.lesson-layout{display:grid;grid-template-columns:270px 1fr;gap:24px}.sidebar{background:#fff;border:1px solid var(--line);border-radius:19px;padding:16px;align-self:start;position:sticky;top:98px;box-shadow:0 8px 28px rgba(17,34,56,.04)}.sidebar a{display:block;padding:10px 12px;border-radius:10px;color:var(--ink);text-decoration:none}.sidebar a:hover{background:#f1f4fb;color:var(--blue)}.lesson-content{background:#fff;border:1px solid var(--line);border-radius:22px;padding:38px;min-height:500px;box-shadow:0 8px 28px rgba(17,34,56,.04)}.lesson-content h1{font-size:2.65rem;line-height:1.06}.lesson-body{font-size:1.07rem;color:#334b65}.lesson-body h2{margin-top:1.8em;color:var(--navy)}.quiz-option{display:block;border:1px solid var(--line);padding:13px 14px;border-radius:12px;margin:9px 0;background:#fff}.table-wrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:17px;box-shadow:0 8px 28px rgba(17,34,56,.04)}table{width:100%;border-collapse:collapse}th,td{padding:13px 14px;border-bottom:1px solid var(--line);text-align:left}th{font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);background:#fafbfe}.admin-nav{display:flex;gap:10px;flex-wrap:wrap;margin:0 0 24px}.admin-nav a{text-decoration:none;padding:9px 12px;background:#fff;border:1px solid var(--line);border-radius:10px;color:var(--ink);font-weight:750}.admin-nav a:hover{border-color:#bec9e5;color:var(--blue)}
.install-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 24px}.install-steps div{padding:12px;background:#f7f9fd;border-radius:12px;font-size:.84rem;color:var(--muted)}.install-steps strong{display:block;color:var(--navy)}
footer{padding:40px 5vw;border-top:1px solid var(--line);color:var(--muted);background:#fff;display:flex;justify-content:space-between;gap:34px}.small{font-size:.85rem;max-width:670px}.footer-brand{color:var(--navy);font-weight:900}
@media(max-width:900px){.hero-inner,.grid-3,.metric-row,.lesson-layout{grid-template-columns:1fr}.grid-4{grid-template-columns:1fr 1fr}.hero{padding-top:68px}.idea-orbit{height:310px}.sidebar{position:static}.feature-strip{grid-template-columns:1fr}.section-head{display:block}.hero-card{transform:none}footer{display:block}.footer-brand{display:block;margin-bottom:8px}}
@media(max-width:620px){.grid-4{grid-template-columns:1fr}.section{padding:58px 20px}.hero{padding:60px 20px}.site-header{padding:0 20px}.site-header nav a:not(.btn){display:none}.idea-orbit{height:280px}.chip-2{display:none}.hero-card-foot{display:block}.install-steps{grid-template-columns:1fr}.auth-card{padding:26px}.dashboard{padding-left:20px;padding-right:20px}.lesson-content{padding:25px}}

/* Admin curriculum editor */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.section-head.compact{align-items:flex-start;margin-bottom:10px}.admin-tabs{display:flex;gap:10px;flex-wrap:wrap}.editor-item{border:1px solid var(--line);border-radius:15px;margin:12px 0;background:#fbfcff;overflow:hidden}.editor-item summary{cursor:pointer;display:flex;justify-content:space-between;gap:18px;align-items:center;padding:15px 17px;list-style:none}.editor-item summary::-webkit-details-marker{display:none}.editor-item summary span{font-size:.78rem;color:var(--muted);font-weight:750}.editor-item[open] summary{background:#f3f6fd;border-bottom:1px solid var(--line)}.editor-form{padding:18px}.new-item{border-style:dashed;background:#fff}.text-danger{border:0;background:transparent;color:var(--danger);font-weight:800;cursor:pointer;padding:6px 18px 16px}.text-danger:hover{text-decoration:underline}@media(max-width:700px){.grid-2{grid-template-columns:1fr}.editor-item summary{align-items:flex-start;flex-direction:column;gap:4px}}

/* Interactive curriculum v2 */
.age-guide{margin:26px 0;padding:22px;border:1px solid var(--line);border-radius:18px;background:#f8faff}.age-guide h3{margin-top:0}.age-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.age-grid>div{padding:14px;border-radius:14px;background:#fff;border:1px solid var(--line)}.age-grid p{margin:5px 0 0;font-size:.92rem;color:var(--muted)}
.learn-block,.project-callout{margin:26px 0}.prompt-example{margin:22px 0;padding:20px;border-radius:16px;background:#101f36;color:#eef5ff}.prompt-example .eyebrow{color:#9fdff0}.prompt-example p{margin:8px 0 0;white-space:pre-wrap}.project-callout{padding:22px;border-radius:18px;background:linear-gradient(135deg,#eef2ff,#f7efff);border:1px solid #dfe4ff}.project-callout h2{margin-top:0}
.interactive-panel{margin:34px 0;padding:25px;border-radius:20px;background:linear-gradient(145deg,#f2f5ff,#faf7ff);border:1px solid #dfe5fa}.interactive-panel h2{margin:.15em 0}.prompt-result{margin:14px 0;padding:15px;border-radius:12px;background:#fff;border:1px dashed #aebbe0;min-height:58px;white-space:pre-wrap}.student-workspace{margin-top:34px;border-top:1px solid var(--line);padding-top:30px}.workspace-head{display:flex;justify-content:space-between;gap:18px;align-items:start}.autosave-label,.char-count{font-size:.78rem;color:var(--muted)}.work-step{display:grid;grid-template-columns:42px 1fr;gap:14px;margin:22px 0}.work-step>span{width:36px;height:36px;border-radius:12px;display:grid;place-items:center;background:#eef1ff;color:var(--blue);font-weight:900}.work-step .field{margin:0}.work-step textarea{min-height:120px}.lesson-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}.mini-note{margin-top:14px;padding:12px;background:#fff8e8;border-radius:10px;font-size:.78rem;line-height:1.45;color:#705720}.lesson-card .small{display:block;margin-bottom:10px}.quiz-gate{border-left:4px solid var(--blue)}.quiz-option{display:flex;gap:10px;align-items:flex-start;cursor:pointer}.quiz-option:hover{border-color:#a8b5dc;background:#f8faff}.answer-review{margin:12px 0}.answer-correct{border-left:4px solid #2ba879}.answer-wrong{border-left:4px solid #d75a5a}.check-list{padding-left:20px}.check-list li{margin:8px 0}
@media(max-width:700px){.age-grid{grid-template-columns:1fr}.workspace-head{display:block}.work-step{grid-template-columns:1fr}.work-step>span{margin-bottom:-4px}}
@media print{.site-header,.sidebar,footer,.lesson-actions,.interactive-panel{display:none!important}.lesson-layout{display:block}.dashboard{padding:0;background:#fff}.lesson-content{box-shadow:none;border:0;padding:0}.student-workspace textarea{border:1px solid #999;min-height:120px}}