:root{
    --night:#071522;--night-2:#0d2231;--turquoise:#35c6c8;--blue:#168aad;
    --gold:#c7a24a;--cream:#f3efe4;--paper:#fbfaf5;--earth:#7a4f35;
    --red:#a63d32;--text:#13222d;--muted:#64737c;--border:rgba(7,21,34,.12);
    --shadow:0 24px 70px rgba(4,18,28,.14)
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Manrope,system-ui,sans-serif;color:var(--text);background:var(--paper)}
a{text-decoration:none;color:inherit}button{font:inherit}.container{width:min(1180px,calc(100% - 40px));margin:auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(7,21,34,.93);backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,255,255,.08)}
.nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:12px;color:white}
.brand-mark{width:44px;height:44px;border:1px solid rgba(53,198,200,.5);display:grid;place-items:center;border-radius:14px;color:var(--turquoise);font-size:24px}
.brand strong{display:block;font-family:Marcellus,serif;font-size:22px;letter-spacing:.04em}.brand small{display:block;color:#9bb0bc;font-size:11px;letter-spacing:.08em;text-transform:uppercase}
.main-nav{display:flex;gap:30px;align-items:center;color:#d9e3e7;font-size:14px}.main-nav a:hover{color:var(--turquoise)}
.nav-cta{border:1px solid rgba(53,198,200,.55);padding:11px 16px;border-radius:999px}
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#071522 0%,#0d2a3a 55%,#103845 100%);color:white;min-height:720px;display:flex;align-items:center}
.hero-pattern{position:absolute;inset:0;opacity:.08;background-image:linear-gradient(45deg,transparent 45%,#fff 45%,#fff 48%,transparent 48%),linear-gradient(-45deg,transparent 45%,#fff 45%,#fff 48%,transparent 48%);background-size:90px 90px}
.hero:after{content:"";position:absolute;width:520px;height:520px;border:1px solid rgba(53,198,200,.16);border-radius:50%;right:-160px;top:80px;box-shadow:0 0 0 80px rgba(53,198,200,.03),0 0 0 160px rgba(53,198,200,.02)}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.2fr .8fr;gap:80px;align-items:center;padding:100px 0}
.eyebrow{display:inline-block;color:var(--turquoise);font-size:12px;font-weight:800;letter-spacing:.18em;margin-bottom:16px}
.hero h1,.lesson-hero h1,.dashboard-hero h1{font-family:Marcellus,serif;font-weight:400;line-height:1.05;margin:0}.hero h1{font-size:clamp(48px,7vw,82px)}
.hero h1 em{font-style:normal;color:#d6b65d}.hero-copy>p{max-width:680px;color:#c4d1d6;font-size:18px;line-height:1.8;margin:26px 0 34px}
.hero-actions{display:flex;gap:14px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:15px 22px;border-radius:12px;font-weight:800;border:0;cursor:pointer}
.btn-primary{background:var(--turquoise);color:var(--night);box-shadow:0 12px 30px rgba(53,198,200,.24)}.btn-primary:hover{transform:translateY(-2px)}
.btn-ghost{border:1px solid rgba(255,255,255,.2);color:white}.hero-stats{display:flex;gap:42px;margin-top:54px}.hero-stats div{display:flex;flex-direction:column}
.hero-stats strong{font-size:28px;color:white}.hero-stats span{font-size:12px;color:#93a9b3;text-transform:uppercase;letter-spacing:.08em}
.hero-card-wrap{display:flex;justify-content:center}.lesson-card{width:min(390px,100%);background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(18px);padding:30px;border-radius:28px;box-shadow:var(--shadow);transform:rotate(2deg)}
.lesson-card-top{display:flex;justify-content:space-between;color:#b9c8cf;font-size:13px}.lesson-badge{color:var(--turquoise);border:1px solid rgba(53,198,200,.35);padding:5px 8px;border-radius:8px}
.word{font-family:Marcellus,serif;font-size:98px;text-align:center;margin-top:22px}.translit{text-align:center;font-size:24px;color:var(--turquoise)}
.meaning{text-align:center;color:#d5dfe3;margin:8px 0 24px}.audio-button,.small-btn{width:100%;border:1px solid var(--border);background:white;padding:12px;border-radius:10px;cursor:pointer;font-weight:800}
.lesson-card .audio-button{background:rgba(255,255,255,.09);color:white;border-color:rgba(255,255,255,.14)}.motif-line{height:16px;margin:24px 0 12px;background:repeating-linear-gradient(90deg,transparent 0 9px,var(--gold) 9px 11px,transparent 11px 19px);opacity:.45}
.lesson-card small{display:block;text-align:center;color:#8299a4}.section{padding:100px 0}.section-heading{text-align:center;max-width:760px;margin:0 auto 50px}
.section-heading.left{text-align:left;margin-left:0}.section-heading h2,.content-title h2,.cta-box h2,.today-card h2,.skill-card h2{font-family:Marcellus,serif;font-weight:400;font-size:42px;margin:0 0 14px}
.section-heading p{color:var(--muted);line-height:1.8}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature-card{background:white;border:1px solid var(--border);padding:28px;border-radius:20px;transition:.2s}.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.feature-card .icon{display:grid;place-items:center;width:46px;height:46px;border-radius:14px;background:#e9f8f7;color:var(--blue);font-size:22px}.feature-card h3{margin:20px 0 10px}.feature-card p{color:var(--muted);line-height:1.7}
.dark-section{background:var(--night);color:white}.dark-section .section-heading p{color:#a8bac2}.roadmap{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.roadmap-item{display:flex;gap:20px;padding:24px;border:1px solid rgba(255,255,255,.1);border-radius:18px;background:rgba(255,255,255,.04)}
.roadmap-item>span{color:var(--gold);font-family:Marcellus,serif;font-size:30px}.roadmap-item h3{margin:0 0 8px}.roadmap-item p{margin:0;color:#9fb2bc;line-height:1.6}.roadmap-item.active{border-color:rgba(53,198,200,.45);background:rgba(53,198,200,.07)}
.cta-box{background:linear-gradient(135deg,#f1ead8,#f8f5eb);border:1px solid #dfd4b8;border-radius:28px;padding:48px;display:flex;align-items:center;justify-content:space-between;gap:30px}.cta-box p{max-width:700px;color:var(--muted)}
.site-footer{background:#051019;color:#cbd8dd;padding:60px 0}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px}.footer-grid>div{display:flex;flex-direction:column;gap:10px}.footer-grid a,.footer-grid p{color:#8298a3;font-size:14px;line-height:1.6}.footer-brand{color:white}
.lesson-hero,.dashboard-hero{background:linear-gradient(135deg,#071522,#123748);color:white;padding:84px 0}.lesson-hero h1,.dashboard-hero h1{font-size:54px}.lesson-hero p,.dashboard-hero p{max-width:760px;color:#b9c9cf;line-height:1.8}.back-link{display:block;color:#a9bdc5;margin-bottom:28px}
.lesson-layout{display:grid;grid-template-columns:250px 1fr;gap:50px}.lesson-sidebar{position:sticky;top:110px;align-self:start}.progress-ring{height:180px;border-radius:24px;background:var(--night);color:white;display:flex;flex-direction:column;align-items:center;justify-content:center;margin-bottom:20px}
.progress-ring strong{font-size:38px;color:var(--turquoise)}.progress-ring span{font-size:12px;color:#9bb0ba}.lesson-sidebar nav{display:flex;flex-direction:column;gap:8px}.lesson-sidebar nav a{padding:12px 14px;border-radius:10px;color:var(--muted)}.lesson-sidebar nav a.active{background:#e6f7f6;color:var(--night);font-weight:800}
.content-title{display:flex;gap:16px;align-items:flex-start;margin-bottom:28px}.content-title .step{display:grid;place-items:center;min-width:46px;height:46px;border-radius:14px;background:var(--night);color:var(--turquoise);font-weight:800}.content-title h2{font-size:34px}.content-title p{margin:0;color:var(--muted)}
.alphabet-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.letter-card{background:white;border:1px solid var(--border);border-radius:18px;padding:22px;text-align:center}.letter-card .letter{display:block;font-family:Marcellus,serif;font-size:50px;color:var(--night)}.letter-card strong{display:block;color:var(--blue);font-size:20px}.letter-card p{height:48px;color:var(--muted);font-size:13px}
.exercise-box{margin-top:70px}.quiz-card,.completion-card{background:white;border:1px solid var(--border);border-radius:22px;padding:30px}.quiz-letter{text-align:center;font-family:Marcellus,serif;font-size:86px}.quiz-card>p{text-align:center}
.choice-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.choice-grid button{border:1px solid var(--border);background:var(--paper);padding:15px;border-radius:12px;cursor:pointer;font-weight:800}.choice-grid button.correct{background:#dff6e8;border-color:#6fc68e}.choice-grid button.wrong{background:#fae5e2;border-color:#d9776c}.quiz-feedback{min-height:24px;margin-top:18px;text-align:center;font-weight:700}.quiz-feedback.success{color:#247842}.quiz-feedback.error{color:#a03d35}
.completion-card{display:flex;align-items:center;justify-content:space-between}.completion-card div{display:flex;flex-direction:column}.completion-card strong{font-size:28px}.completion-card span{color:var(--muted)}
.dashboard-section{background:#f5f3ec}.dashboard-grid{display:grid;grid-template-columns:1fr 330px;gap:26px}.today-card{background:var(--night);color:white;border-radius:24px;padding:34px;display:flex;justify-content:space-between;gap:30px}.today-card h2{font-size:34px}.today-card p{color:#a9bbc4;max-width:650px}.today-actions{display:flex;flex-direction:column;align-items:flex-end;justify-content:center;gap:18px;white-space:nowrap}.today-actions span{color:#94aab4;font-size:13px}
.metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:18px 0}.metric-grid article,.skill-card,.streak-card,.review-card,.notice-card{background:white;border:1px solid var(--border);border-radius:20px;padding:24px}.metric-grid span,.metric-grid small{display:block;color:var(--muted)}.metric-grid strong{display:block;font-size:30px;margin:10px 0}
.card-heading{display:flex;justify-content:space-between;align-items:center}.card-heading span{color:var(--turquoise);background:var(--night);padding:6px 10px;border-radius:999px;font-size:12px}.skill-list{display:flex;flex-direction:column;gap:18px;margin-top:24px}.skill-list>div{display:grid;grid-template-columns:90px 1fr 50px;gap:14px;align-items:center}.bar{height:10px;background:#e7ecec;border-radius:99px;overflow:hidden}.bar i{display:block;height:100%;background:var(--turquoise);border-radius:99px}
.dashboard-side{display:flex;flex-direction:column;gap:18px}.streak-card{background:linear-gradient(135deg,#f1ead8,#fffaf0);text-align:center}.streak-icon{display:block;font-size:42px;color:var(--gold)}.streak-card strong{font-size:22px}.streak-card p,.review-card p,.notice-card p{color:var(--muted);line-height:1.6}.notice-card{background:#fff8e7;border-color:#ead9a4}
@media(max-width:900px){.main-nav a:not(.nav-cta){display:none}.hero-grid,.lesson-layout,.dashboard-grid{grid-template-columns:1fr}.hero-grid{gap:40px;padding:80px 0}.hero{min-height:auto}.feature-grid{grid-template-columns:repeat(2,1fr)}.alphabet-grid{grid-template-columns:repeat(2,1fr)}.lesson-sidebar{position:static}.dashboard-side{display:grid;grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.container{width:min(100% - 24px,1180px)}.section{padding:70px 0}.hero h1{font-size:48px}.hero-stats{gap:18px;flex-wrap:wrap}.feature-grid,.roadmap,.metric-grid,.dashboard-side,.alphabet-grid,.choice-grid{grid-template-columns:1fr}.cta-box,.today-card,.completion-card{flex-direction:column;align-items:flex-start}.today-actions{align-items:flex-start}.footer-grid{grid-template-columns:1fr}.lesson-hero h1,.dashboard-hero h1{font-size:42px}.section-heading h2{font-size:34px}}