*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#FCFAF6;
  --surface:oklch(0.970 0.005 85);
  --surface-2:oklch(0.940 0.008 85);
  --ink:#13294B;
  --muted:oklch(0.450 0.015 80);
  --border:oklch(0.880 0.008 85);
  --primary:#D4A017;
  --primary-hover:#b8890e;
  --primary-soft:oklch(0.920 0.060 91.3);
  --primary-soft-2:oklch(0.945 0.035 91.3);
  --accent:#13294B;
  --accent-hover:oklch(0.220 0.140 260);
  --accent-soft:oklch(0.880 0.040 260);
  --success:oklch(0.550 0.165 145);
  --success-soft:oklch(0.920 0.050 145);
  --error:oklch(0.520 0.185 30);
  --error-soft:oklch(0.930 0.050 30);
  --warning:oklch(0.720 0.140 85);
  --warning-soft:oklch(0.930 0.050 85);
  --radius:8px;
  --radius-sm:4px;
  --radius-lg:14px;
  --shadow-sm:0 1px 2px oklch(0 0 0 / 0.04),0 1px 3px oklch(0 0 0 / 0.06);
  --shadow:0 2px 6px oklch(0 0 0 / 0.06),0 4px 12px oklch(0 0 0 / 0.08);
  --shadow-lg:0 12px 40px oklch(0 0 0 / 0.05);
  --shadow-xl:0 20px 60px oklch(0 0 0 / 0.08);
  --font:Inter,system-ui,-apple-system,Segoe UI,Roboto,Noto Sans,sans-serif;
  --max-w:1200px;
  --nav-h:64px;
}
html{font-family:var(--font);color:var(--ink);background:#FCFAF6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth;line-height:1.5}
body{min-height:100vh}
a{color:inherit;text-decoration:none}
button{cursor:pointer;font:inherit;border:none;background:none;color:inherit}
input{font:inherit}
img{max-width:100%;display:block}

.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-header{text-align:center;margin-bottom:64px}
.section-header h2{font-size:clamp(1.75rem,3vw,2.5rem);font-weight:700;letter-spacing:-0.03em;text-wrap:balance;margin-bottom:16px}
.section-header p{font-size:1.125rem;color:var(--muted);max-width:600px;margin:0 auto}

.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:var(--radius);font-weight:600;font-size:0.9375rem;transition:all 0.2s ease;white-space:nowrap}
.btn-primary{background:var(--primary);color:var(--bg)}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-accent{background:var(--accent);color:var(--bg)}.btn-accent:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-outline{border:1.5px solid var(--border);color:var(--ink)}.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-ghost{color:var(--muted)}.btn-ghost:hover{color:var(--ink);background:var(--surface)}
.btn-lg{padding:14px 32px;font-size:1rem}
.btn-sm{padding:8px 16px;font-size:0.8125rem}
.btn-icon{padding:8px;border-radius:var(--radius)}

/* Nav */
nav{position:fixed;top:0;left:0;right:0;height:var(--nav-h);background:oklch(1 0 0 / 0.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);z-index:100}
nav .container{display:flex;align-items:center;height:100%;gap:32px;justify-content:space-between}
.nl2{display:flex;align-items:center;gap:12px;font-weight:800;font-size:1.1rem;letter-spacing:-0.02em;color:var(--ink);text-decoration:none}
.nl2 .logo-mark{width:36px;height:36px;border-radius:50%;background:var(--primary);color:var(--bg);display:flex;align-items:center;justify-content:center;font-size:.8125rem;font-weight:800}
.nl2 .nl-full{display:flex;flex-direction:column}
.nl2 .nl-name{font-size:1rem;font-weight:800;letter-spacing:-.02em;line-height:1.2}
.nl2 .nl-title{font-size:.625rem;color:var(--muted);font-weight:500;letter-spacing:.04em;text-transform:uppercase}
.nv1{display:flex;align-items:center;gap:12px}
.nv1 .nv-link{font-size:.875rem;font-weight:600;color:var(--ink);text-decoration:none;padding:6px 12px;border-radius:var(--radius);transition:background .15s}
.nv1 .nv-link:hover{background:var(--surface)}
@keyframes navScaleIn { from { opacity:0; transform:scale(.92); } to { opacity:1; transform:scale(1); } }
.nav-anim .nl2,
.nav-anim .nv1 > * { animation: navScaleIn .4s cubic-bezier(.16,1,.3,1) both; transform-origin:center; }
.nav-anim .nl2 { animation-delay: 0ms; }
.nav-anim .nv1 > *:nth-child(1) { animation-delay: 60ms; }
.nav-anim .nv1 > *:nth-child(2) { animation-delay: 110ms; }
.nav-anim .nv1 > *:nth-child(3) { animation-delay: 160ms; }
.nav-anim .nv1 > *:nth-child(4) { animation-delay: 210ms; }
.nv1 .nv-link.active{background:var(--primary-soft);color:var(--primary)}
.nv1 .nv-cta{display:flex;gap:8px}
.nv1 .avatar{width:32px;height:32px;border-radius:50%;background:var(--primary);color:var(--bg);display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:800;cursor:pointer;border:2px solid transparent;transition:border-color .15s}
.nv1 .avatar:hover{border-color:var(--primary)}

/* Hero */
.hero{min-height:100vh;display:flex;align-items:center;padding-top:var(--nav-h);position:relative;overflow:hidden}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.hero-bg .gradient-1{position:absolute;top:-40%;right:-20%;width:80%;height:80%;background:radial-gradient(circle at center,var(--primary-soft) 0%,transparent 70%);opacity:0.5}
.hero-bg .gradient-2{position:absolute;bottom:-30%;left:-10%;width:60%;height:60%;background:radial-gradient(circle at center,var(--accent-soft) 0%,transparent 70%);opacity:0.3}
.hero-split{display:flex;align-items:center;gap:60px;position:relative;z-index:1}
.hero-text-col{flex:1;min-width:0}
.hero-tag{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:100px;background:var(--primary-soft);color:var(--primary-hover);font-size:0.8125rem;font-weight:600;margin-bottom:24px}
.hero-tag::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--primary)}
.hero-text-col h1{font-size:clamp(2.2rem,5vw,3.8rem);font-weight:800;letter-spacing:-0.04em;line-height:1.08;text-wrap:balance;margin-bottom:16px}
.hero-text-col h1 .highlight{color:var(--primary)}
.hero-desc{font-size:clamp(1rem,1.8vw,1.15rem);color:var(--muted);max-width:520px;line-height:1.7;margin-bottom:32px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-img-col{flex-shrink:0;text-align:center;width:320px}
.hero-img-frame{width:280px;height:280px;border-radius:50%;overflow:hidden;margin:0 auto 16px;background:var(--surface);border:3px solid var(--primary);box-shadow:0 8px 32px oklch(0.68 0.175 91.3 / .2);display:flex;align-items:center;justify-content:center}
.hero-img-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:var(--surface-2);font-size:2.5rem;transition:opacity .3s}
.hero-img-placeholder.loaded{background:transparent}
.hero-img-loaded{width:100%;height:100%;object-fit:cover}
.hip-icon{opacity:.4}
.hero-img-name{font-size:1.25rem;font-weight:700;color:var(--ink)}
.hero-img-title{font-size:.875rem;color:var(--muted);margin-top:4px}

/* Features */
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.feature-card{padding:32px;border-radius:var(--radius-lg);border:1px solid var(--border);background:var(--surface);transition:all 0.25s ease}
.feature-card:hover{border-color:var(--primary-soft);box-shadow:var(--shadow);transform:translateY(-2px)}
.feature-icon{width:48px;height:48px;border-radius:var(--radius);background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1.25rem;margin-bottom:20px}
.feature-card h3{font-size:1.125rem;font-weight:700;margin-bottom:8px;letter-spacing:-0.02em}
.feature-card p{font-size:0.9375rem;color:var(--muted);line-height:1.6}

/* Steps */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;position:relative}
.steps-grid::before{content:'';position:absolute;top:40px;left:16.66%;right:16.66%;height:2px;background:linear-gradient(to right,var(--primary) 0%,var(--primary) 100%);opacity:0.2}
.step-card{text-align:center;position:relative}
.step-number{width:80px;height:80px;border-radius:50%;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1.75rem;font-weight:800;margin:0 auto 24px;position:relative;z-index:1}
.step-card h3{font-size:1.125rem;font-weight:700;margin-bottom:8px}
.step-card p{font-size:0.9375rem;color:var(--muted);line-height:1.6;max-width:300px;margin:0 auto}

/* About */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.about-content h2{font-size:clamp(1.75rem,3vw,2.5rem);font-weight:700;letter-spacing:-0.03em;text-wrap:balance;margin-bottom:16px}
.about-content p{color:var(--muted);line-height:1.7;margin-bottom:16px;font-size:1rem}
.about-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:32px}
.about-stat{text-align:center}
.about-stat .stat-num{font-size:1.5rem;font-weight:800;color:var(--primary);letter-spacing:-0.02em}
.about-stat .stat-label{font-size:0.8125rem;color:var(--muted);margin-top:4px}
.about-visual{background:var(--surface);border-radius:var(--radius-lg);border:1px solid var(--border);aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.about-visual .placeholder{text-align:center;color:var(--muted)}
.about-visual .placeholder .initials{width:80px;height:80px;border-radius:50%;background:var(--primary);color:var(--bg);display:flex;align-items:center;justify-content:center;font-size:1.75rem;font-weight:800;margin:0 auto 12px}

/* Testimonials */
.testimonials-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.testimonial-card{padding:32px;border-radius:var(--radius-lg);border:1px solid var(--border);background:var(--surface)}
.testimonial-stars{color:var(--primary);margin-bottom:16px;font-size:1rem}
.testimonial-card blockquote{font-size:0.9375rem;line-height:1.7;color:var(--muted);margin-bottom:20px;font-style:italic}
.testimonial-author{display:flex;align-items:center;gap:12px}
.testimonial-author .avatar{width:44px;height:44px;border-radius:50%;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1rem}
.testimonial-author .name{font-weight:600;font-size:0.9375rem}
.testimonial-author .role{font-size:0.8125rem;color:var(--muted)}

/* Pricing */
.analysis-v1{padding:32px 24px;background:var(--surface);border-bottom:1px solid var(--border)}.analysis-v1 .analysis-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.analysis-v1 .analysis-header h2{font-size:1.25rem;font-weight:700;letter-spacing:-0.02em}.analysis-v1 .analysis-header .period{font-size:.8125rem;color:var(--muted);background:var(--bg);padding:6px 14px;border-radius:100px;border:1px solid var(--border)}.analysis-v1 .charts-grid{display:grid;grid-template-columns:2fr 1fr;gap:20px}.analysis-v1 .chart-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px}.analysis-v1 .chart-card .chart-title{font-size:.8125rem;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;margin-bottom:16px}.analysis-v1 .chart-card .chart-bars{display:flex;align-items:flex-end;gap:8px;height:120px;padding-top:8px}.analysis-v1 .chart-card .chart-bars .bar{flex:1;border-radius:4px 4px 0 0;min-height:8px;background:var(--primary-soft);position:relative}.analysis-v1 .chart-card .chart-bars .bar span{position:absolute;top:-18px;left:50%;transform:translateX(-50%);font-size:.625rem;color:var(--muted)}.analysis-v1 .chart-card .chart-bars .bar.high{background:var(--primary)}.analysis-v1 .chart-card .chart-labels{display:flex;gap:8px;margin-top:8px}.analysis-v1 .chart-card .chart-labels span{flex:1;font-size:.625rem;color:var(--muted);text-align:center}.analysis-v1 .topic-breakdown{display:grid;grid-template-columns:1fr 1fr;gap:12px}.analysis-v1 .topic-breakdown .topic-row{display:flex;align-items:center;gap:12px;padding:8px 0}.analysis-v1 .topic-breakdown .topic-row .topic-name{flex:1;font-size:.8125rem;font-weight:500}.analysis-v1 .topic-breakdown .topic-row .topic-stat{font-size:.8125rem;font-weight:700}.analysis-v1 .topic-breakdown .topic-row .topic-bar{width:80px;height:4px;background:var(--border);border-radius:99px;overflow:hidden}.analysis-v1 .topic-breakdown .topic-row .topic-bar .fill{height:100%;border-radius:99px}
.monthly-v2 .chart-title{font-size:.8125rem;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;margin-bottom:16px}.monthly-v2 .chart-area{position:relative;height:140px;padding:8px 0;overflow:hidden}.monthly-v2 .chart-area svg{width:100%;height:100%}.monthly-v2 .chart-labels{display:flex;gap:10px;margin-top:8px}.monthly-v2 .chart-labels span{flex:1;font-size:.6875rem;color:var(--muted);text-align:center;font-weight:500}.monthly-v2 .chart-summary{display:flex;gap:20px;margin-top:20px;padding-top:16px;border-top:1px solid var(--border)}.monthly-v2 .chart-summary .stat{flex:1;text-align:center}.monthly-v2 .chart-summary .stat .num{font-size:1.25rem;font-weight:800;letter-spacing:-.02em}.monthly-v2 .chart-summary .stat .lbl{font-size:.6875rem;color:var(--muted)}
.bundle-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.bundle-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;position:relative}.bundle-card.featured{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary),var(--shadow)}.bundle-card .bundle-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--primary);color:var(--bg);padding:3px 16px;border-radius:100px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em}.bundle-card h3{font-size:1.125rem;font-weight:700;margin-bottom:4px}.bundle-card .bundle-desc{font-size:.875rem;color:var(--muted);margin-bottom:16px}.bundle-card ul{list-style:none;margin-bottom:20px}.bundle-card li{padding:6px 0;font-size:.875rem;display:flex;align-items:center;gap:8px}.bundle-card li::before{content:'✓';color:var(--primary);font-weight:700}.bundle-card .bundle-price{font-size:1.75rem;font-weight:800;letter-spacing:-.02em;margin-bottom:4px}.bundle-card .bundle-price span{font-size:.875rem;font-weight:400;color:var(--muted)}.bundle-card .btn{width:100%;justify-content:center}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.pricing-card{padding:40px 32px;border-radius:var(--radius-lg);border:1px solid var(--border);background:var(--surface);transition:all 0.25s ease;position:relative}
.pricing-card.featured{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary),var(--shadow-lg);background:var(--bg);transform:scale(1.03)}
.pricing-card.featured .pricing-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--primary);color:var(--bg);padding:4px 16px;border-radius:100px;font-size:0.75rem;font-weight:700;text-transform:uppercase;letter-spacing:0.04em}
.pricing-card h3{font-size:1.125rem;font-weight:700;margin-bottom:4px}
.pricing-card .subtitle{font-size:0.875rem;color:var(--muted);margin-bottom:24px}
.pricing-card .price{font-size:2.5rem;font-weight:800;letter-spacing:-0.03em;margin-bottom:4px}
.pricing-card .price .currency{font-size:1.25rem;font-weight:600;vertical-align:super;margin-right:2px}
.pricing-card .price .period{font-size:0.9375rem;font-weight:400;color:var(--muted)}.pricing-card .description{font-size:0.9375rem;color:var(--muted);margin-bottom:32px}
.pricing-features{list-style:none;margin-bottom:32px}
.pricing-features li{padding:8px 0;font-size:0.9375rem;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border)}
.pricing-features li::before{content:'✓';color:var(--primary);font-weight:700;font-size:0.875rem}
.pricing-features li:last-child{border-bottom:none}

/* Landing Courses — premium horizontal cards */
.landing-courses{padding-bottom:96px}
.lc-grid{display:flex;flex-direction:column;gap:16px;max-width:820px;margin:0 auto}
.lc-card{display:flex;align-items:stretch;background:#fff;border:1px solid oklch(0.88 0.015 85);border-radius:24px;overflow:hidden;cursor:pointer;transition:box-shadow .4s cubic-bezier(.16,1,.3,1),translate .35s cubic-bezier(.16,1,.3,1);box-shadow:0 8px 28px oklch(0 0 0 / .04)}
.lc-card:hover{box-shadow:0 16px 48px oklch(0 0 0 / .08);translate:0 -2px}
.lc-thumb{width:200px;flex-shrink:0;min-height:140px;display:flex;align-items:center;justify-content:center;overflow:hidden;background:#FAF7F0;position:relative}
.lc-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.lc-thumb svg{width:100%;height:100%;display:block;object-fit:cover}
.lc-body{flex:1;padding:22px 24px;display:flex;flex-direction:column;justify-content:center;min-width:0}
.lc-badge{display:inline-flex;align-self:flex-start;padding:3px 12px;background:var(--primary-soft);color:var(--primary);font-size:.65rem;font-weight:700;border-radius:999px;letter-spacing:.04em;margin-bottom:8px;text-transform:uppercase}
.lc-body h3{font-size:1.25rem;font-weight:800;letter-spacing:-.03em;line-height:1.15;color:var(--ink);margin:0 0 4px;text-wrap:balance}
.lc-body p{font-size:.85rem;color:var(--muted);line-height:1.55;margin:0 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;max-width:400px}
.lc-meta{display:flex;gap:20px;font-size:.75rem;color:var(--muted);margin-bottom:2px}
.lc-meta span{display:flex;align-items:center;gap:4px}
.lc-right{display:flex;flex-direction:column;justify-content:center;align-items:flex-end;padding:22px 24px 22px 0;gap:8px;flex-shrink:0;min-width:140px}
.lc-progress{width:100%;margin-bottom:2px}
.lc-progress-lbl{font-size:.65rem;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:4px}
.lc-progress-bar{height:4px;background:oklch(0.90 0.01 85);border-radius:999px;overflow:hidden;width:100%}
.lc-progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),#e8b830);border-radius:999px;transition:width .5s ease}
.lc-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 22px;background:var(--primary);color:#fff;border:none;border-radius:14px;font-size:.8125rem;font-weight:700;cursor:pointer;transition:background .2s,translate .2s,box-shadow .2s;white-space:nowrap}
.lc-btn:hover{background:var(--primary-hover);translate:0 -1px;box-shadow:0 4px 16px oklch(0.68 0.175 91.3 / .25)}
.lc-btn-outline{background:transparent;color:var(--ink);border:1.5px solid oklch(0.85 0.02 85)}
.lc-btn-outline:hover{background:transparent;border-color:var(--primary);color:var(--primary);box-shadow:none;translate:none}

/* Responsive landing courses */
@media (max-width: 700px){
  .lc-card{flex-direction:column}
  .lc-thumb{width:100%;height:120px}
  .lc-body{padding:16px 18px}
  .lc-right{padding:0 18px 18px;flex-direction:row;flex-wrap:wrap;align-items:center;justify-content:flex-start;gap:10px}
  .lc-progress{flex:1;min-width:100px}
  .lc-btn{flex-shrink:0}
}

/* Footer */
footer{background:var(--ink);color:oklch(0.7 0.01 80);padding:96px 0 48px;margin-top:48px}
footer .container{max-width:var(--max-w)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px}
footer h4{color:var(--bg);font-size:0.9375rem;font-weight:700;margin-bottom:16px;letter-spacing:-0.02em}
footer p{font-size:0.875rem;line-height:1.6}
footer a{font-size:0.875rem;display:block;padding:4px 0;transition:color 0.2s}
footer a:hover{color:var(--bg)}
footer .legal{border-top:1px solid oklch(0.25 0 0);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;font-size:0.8125rem}

/* ============ ANIMATED COURSES BACKGROUND ============ */
.courses-view{position:relative}
.courses-bg{position:fixed;inset:0;pointer-events:none;overflow:hidden;z-index:0}
.cb-orb{position:absolute;border-radius:50%;filter:blur(90px);opacity:.35}
.cb-orb--gold{width:600px;height:600px;top:-15%;right:-10%;background:radial-gradient(circle,oklch(0.75 0.15 91.3 / .4),transparent 70%);animation:cbFloat 25s ease-in-out infinite alternate}
.cb-orb--navy{width:500px;height:500px;bottom:-10%;left:-8%;background:radial-gradient(circle,oklch(0.35 0.10 260 / .3),transparent 70%);animation:cbFloat 30s ease-in-out infinite alternate-reverse}
@keyframes cbFloat{0%{transform:translate(0,0) scale(1)}33%{transform:translate(30px,-40px) scale(1.05)}66%{transform:translate(-20px,20px) scale(.95)}100%{transform:translate(40px,30px) scale(1.02)}}
.cb-symbol{position:absolute;font-size:clamp(1.2rem,2.5vw,2.2rem);opacity:.035;color:#13294B;font-family:Georgia,serif;animation:cbDrift 28s ease-in-out infinite;user-select:none;pointer-events:none}
@keyframes cbDrift{0%{transform:translateY(0) rotate(0deg);opacity:.025}25%{transform:translateY(-12px) rotate(4deg);opacity:.04}50%{transform:translateY(6px) rotate(-3deg);opacity:.025}75%{transform:translateY(-8px) rotate(2deg);opacity:.035}100%{transform:translateY(0) rotate(0deg);opacity:.025}}
.cb-noise{position:absolute;inset:0;opacity:.015;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");background-repeat:repeat;background-size:256px;mix-blend-mode:multiply;pointer-events:none}

/* ============ PLATFORM VIEWS ============ */
.platform-view{display:none;padding-top:var(--nav-h);min-height:100vh}
.landing-view{display:none}

/* Dashboard */
.dashboard-header{background:var(--surface);border-bottom:1px solid var(--border);padding:32px 0}
.dashboard-header h1{font-size:1.75rem;font-weight:700;letter-spacing:-0.03em}
.dashboard-header p{color:var(--muted);margin-top:4px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:32px}
.stat-card{padding:20px 24px;background:var(--bg);border-radius:var(--radius);border:1px solid var(--border)}
.stat-card .stat-value{font-size:1.75rem;font-weight:800;letter-spacing:-0.03em;margin-bottom:2px}
.stat-card .stat-label{font-size:0.8125rem;color:var(--muted)}
.dashboard-content{padding:32px 0 64px}
.section-title{font-size:1.125rem;font-weight:700;letter-spacing:-0.02em;margin-bottom:20px;display:flex;align-items:center;justify-content:space-between}
.lessons-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.lesson-card{position:relative}.sc-badge{display:inline-flex;background:var(--success);color:var(--bg);font-size:.75rem;font-weight:700;padding:2px 10px;border-radius:100px;line-height:1.6}.lesson-card .sc-badge{position:absolute;top:12px;right:12px}
.lesson-card{padding:24px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all 0.2s ease}
.lesson-card:hover{border-color:var(--primary-soft);box-shadow:var(--shadow-sm);transform:translateY(-1px)}
.lesson-card .lesson-topic{display:inline-flex;padding:2px 10px;font-size:0.75rem;font-weight:600;border-radius:100px;background:var(--primary-soft);color:var(--primary);margin-bottom:12px}
.lesson-card h3{font-size:1rem;font-weight:700;margin-bottom:6px}
.lesson-card p{font-size:0.8125rem;color:var(--muted);margin-bottom:16px;line-height:1.5}
.lesson-card .lesson-meta{display:flex;justify-content:space-between;font-size:0.75rem;color:var(--muted);padding-top:12px;border-top:1px solid var(--border)}
.lesson-card .lesson-progress{height:4px;background:var(--border);border-radius:99px;overflow:hidden;margin-bottom:12px}
.lesson-card .lesson-progress .bar{height:100%;background:var(--success);border-radius:99px;transition:width 0.5s ease}
.lesson-card.completed{border-left:3px solid var(--success)}
.lesson-card.in-progress{border-left:3px solid var(--primary)}

/* Courses View */
.courses-view{padding-top:calc(var(--nav-h) + 48px);padding-bottom:96px;position:relative;z-index:1}
.courses-view .container{max-width:var(--max-w);position:relative;z-index:1}
.courses-header{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:24px;margin-bottom:40px}
.courses-header h1{font-size:clamp(1.75rem,3vw,2.5rem);font-weight:700;letter-spacing:-0.03em;margin-bottom:8px}
.courses-header p{color:var(--muted);font-size:1rem;max-width:480px}
.courses-filter{display:flex;flex-wrap:wrap;gap:8px}
.course-filter-btn{padding:6px 14px;border-radius:100px;border:1px solid var(--border);background:var(--surface);color:var(--muted);font-size:.8125rem;font-weight:600;transition:all .15s}
.course-filter-btn:hover{border-color:var(--primary);color:var(--primary)}
.course-filter-btn.active{background:var(--primary);color:var(--bg);border-color:var(--primary)}


.courses-grid{display:flex;flex-direction:column;gap:16px}

/* ===== Premium Course Card ===== */
.pc-card{display:flex;flex-wrap:wrap;align-items:stretch;background:#fff;border:1px solid oklch(0.88 0.015 85);border-radius:24px;padding:24px;gap:28px;cursor:pointer;transition:box-shadow .4s cubic-bezier(.16,1,.3,1),translate .35s cubic-bezier(.16,1,.3,1);box-shadow:0 12px 40px oklch(0 0 0 / .05)}
.pc-card:hover{box-shadow:0 20px 60px oklch(0 0 0 / .08);translate:0 -2px}
.pc-card.open{box-shadow:0 20px 60px oklch(0 0 0 / .10);translate:0 -2px}

/* Left: Thumbnail — 16:9 aspect */
.pc-thumb{width:280px;flex-shrink:0;border-radius:18px;overflow:hidden;background:#FAF7F0;align-self:stretch;display:flex;align-items:center;justify-content:center;position:relative;aspect-ratio:16/9;min-height:158px}
.pc-thumb svg{width:100%;height:100%;display:block;object-fit:cover;transition:transform .45s cubic-bezier(.16,1,.3,1)}
.pc-thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .45s cubic-bezier(.16,1,.3,1)}
.pc-card.open .pc-thumb svg,.pc-card.open .pc-thumb img{transform:scale(1.03)}

/* Middle: Info */
.pc-body{flex:1;min-width:220px;display:flex;flex-direction:column;justify-content:center;padding:6px 0;gap:6px}
.pc-badge{display:inline-flex;align-self:flex-start;padding:4px 14px;background:var(--primary-soft);color:var(--primary);font-size:.675rem;font-weight:700;border-radius:999px;letter-spacing:.03em;margin-bottom:6px}
.pc-title{font-size:clamp(1.35rem,2.5vw,1.85rem);font-weight:800;letter-spacing:-.03em;line-height:1.12;color:var(--ink);margin:0;text-wrap:balance}
.pc-desc{font-size:.9rem;color:var(--muted);line-height:1.55;margin:4px 0 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;max-width:440px}
.pc-meta{display:flex;gap:24px;margin-top:12px;font-size:.8125rem;color:var(--muted)}
.pc-meta span{display:flex;align-items:center;gap:6px}

/* Right: Progress + Expand */
.pc-right{width:160px;flex-shrink:0;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:12px;padding:6px 0}
.pc-progress-row{display:flex;justify-content:space-between;align-items:center;width:100%;margin-bottom:-2px}
.pc-progress-lbl{font-size:.6875rem;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.pc-progress-pct{font-size:.8125rem;font-weight:800;color:var(--ink)}
.pc-progress-bar{width:100%;height:6px;background:oklch(0.90 0.01 85);border-radius:999px;overflow:hidden}
.pc-progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),#e8b830);border-radius:999px;transition:width .6s cubic-bezier(.16,1,.3,1)}
.pc-expand{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border:1.5px solid oklch(0.85 0.02 85);border-radius:50%;background:#fff;color:var(--muted);cursor:pointer;transition:border-color .25s,box-shadow .25s,color .25s;flex-shrink:0;margin-top:4px}
.pc-expand:hover{border-color:var(--primary);box-shadow:0 0 0 4px oklch(0.92 0.06 91.3 / .5);color:var(--primary)}
.pc-expand-icon{display:inline-block;transition:transform .35s cubic-bezier(.16,1,.3,1);font-size:.7rem;line-height:1;color:inherit}
.pc-card.open .pc-expand-icon{transform:rotate(180deg)}

/* Sections (expandable) */
.pc-sections{flex-basis:100%;width:100%;overflow:hidden;max-height:0;opacity:0;margin-top:0;transform:translateY(-8px);transition:max-height .35s cubic-bezier(.16,1,.3,1),opacity .3s ease,margin .3s ease,transform .35s cubic-bezier(.16,1,.3,1)}
.pc-card.open .pc-sections{max-height:5000px;opacity:1;margin-top:8px;transform:translateY(0)}

.course-sections-head{font-size:.675rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:16px}

/* Premium Lesson Row */
.lesson-row{display:flex;align-items:center;gap:14px;width:100%;text-align:left;background:#fff;border:1px solid oklch(0.90 0.01 85);border-radius:18px;padding:14px 18px;margin-bottom:10px;cursor:pointer;transition:border-color .25s,box-shadow .3s cubic-bezier(.16,1,.3,1),translate .25s;box-shadow:0 2px 8px oklch(0 0 0 / .03)}
.lesson-row:last-child{margin-bottom:0}
.lesson-row:hover{border-color:var(--primary);box-shadow:0 8px 24px oklch(0 0 0 / .06);translate:0 -1px}
.lesson-row.locked{opacity:.5;cursor:not-allowed}
.lesson-row.locked:hover{box-shadow:none;translate:none;border-color:oklch(0.90 0.01 85)}
.lesson-row.done{background:oklch(0.985 0.005 85)}
.lr-icon{width:30px;height:30px;border-radius:50%;background:var(--primary-soft);color:var(--primary);font:700 .8125rem/30px var(--font);text-align:center;flex-shrink:0}
.lesson-row.done .lr-icon{background:var(--success-soft);color:var(--success)}
.lesson-row.locked .lr-icon{background:oklch(0.94 0.01 85);color:var(--muted)}
.lr-body{flex:1;min-width:0}
.lr-title{font:600 .875rem/1.35 var(--font);color:var(--ink);display:inline-flex;flex-wrap:wrap;align-items:center;gap:8px}
.lr-meta{font-size:.75rem;color:var(--muted);margin-top:3px}
.lr-arrow{font-size:1rem;color:var(--primary);flex-shrink:0;font-weight:600;opacity:.6}

/* Course Section Rows (inside lesson accordion) — premium style */
.course-section-row{display:flex;align-items:center;gap:14px;width:100%;text-align:left;background:#fff;border:1px solid oklch(0.92 0.008 85);border-radius:16px;padding:12px 16px;margin-bottom:8px;cursor:pointer;transition:border-color .25s,box-shadow .3s cubic-bezier(.16,1,.3,1),translate .25s;box-shadow:0 1px 4px oklch(0 0 0 / .02)}
.course-section-row:last-child{margin-bottom:0}
.course-section-row:hover{border-color:var(--primary);box-shadow:0 6px 20px oklch(0 0 0 / .05);translate:0 -1px}
.cs-num{width:26px;height:26px;border-radius:50%;background:var(--primary-soft);color:var(--primary);font:700 .75rem/26px var(--font);text-align:center;flex-shrink:0}
.cs-title{flex:1;font:400 .875rem/1.4 var(--font);color:var(--ink)}
.cs-open{display:inline-flex;align-items:center;gap:4px;padding:6px 14px;border:1.5px solid var(--primary);border-radius:14px;font:600 .75rem/1 var(--font);color:var(--primary);flex-shrink:0;transition:background .2s,color .2s}
.course-section-row:hover .cs-open{background:var(--primary);color:#fff}
.cs-group{margin-bottom:16px}
.cs-group:last-child{margin-bottom:0}
.cs-group-head{font-size:.65rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:8px 0 12px;display:flex;align-items:center;gap:10px}
.cs-group-head::after{content:"";flex:1;height:1px;background:oklch(0.90 0.01 85)}
.cs-type{font:700 .625rem/1 var(--font);text-transform:uppercase;letter-spacing:.05em;padding:4px 10px;border-radius:999px;flex-shrink:0}
.cs-type.cs-video{background:oklch(0.88 0.04 260);color:var(--accent)}
.cs-type.cs-reading{background:oklch(0.94 0.01 85);color:var(--muted)}
.cs-type.cs-worksheet{background:var(--primary-soft);color:var(--primary)}
.cs-type.cs-exam{background:var(--success-soft);color:var(--success)}
.cs-type.cs-attempt{background:oklch(0.92 0.02 50);color:oklch(0.50 0.06 50)}
.cs-type.cs-file{background:var(--accent-soft);color:var(--accent);font-weight:600;padding:2px 7px;font-size:.5625rem}
.cs-type.cs-file.cs-word{background:oklch(0.88 0.08 240);color:oklch(0.25 0.10 240)}
.cs-type.cs-file.cs-ppt{background:oklch(0.90 0.10 30);color:oklch(0.35 0.15 30)}
.cs-type.cs-file.cs-pdf{background:oklch(0.92 0.08 30);color:oklch(0.45 0.18 30)}
.cs-type.cs-file.cs-text{background:oklch(0.92 0.02 220);color:oklch(0.40 0.04 220)}
.cs-type.cs-file.cs-zip{background:oklch(0.90 0.04 50);color:oklch(0.40 0.08 50)}

/* Lesson Content (inner accordion) */
.ls-content{overflow:hidden;max-height:0;opacity:0;transition:max-height .35s cubic-bezier(.16,1,.3,1),opacity .25s ease,margin .2s ease;margin:0}
.ls-content.open{max-height:3000px;opacity:1;margin:6px 0 0 24px}

@media (prefers-reduced-motion: reduce){
  .pc-card,.pc-thumb svg,.pc-thumb img,.pc-expand,.pc-expand-icon,.pc-sections,.lesson-row,.course-section-row{transition:none!important}
  .pc-card.open{translate:none}
  .pc-card.open .pc-thumb svg,.pc-card.open .pc-thumb img{transform:none}
  .ls-content{transition:none}
}

/* Responsive */
@media (max-width: 800px){
  .pc-card{flex-direction:column;padding:20px;gap:18px;border-radius:20px}
  .pc-thumb{width:100%;height:auto;aspect-ratio:16/9;align-self:auto}
  .pc-thumb svg{width:100%;height:100%}
  .pc-right{width:100%;flex-direction:row;flex-wrap:wrap;align-items:center;gap:12px;padding:0}
  .pc-right .pc-progress-row{flex:1;min-width:100px}
  .pc-right .pc-progress-bar{flex-basis:100%}
  .pc-expand{width:36px;height:36px;margin-top:0}
  .course-section-row{min-height:48px;padding:14px 16px}
  .pc-card.open .pc-sections{max-height:3000px}
  .course-section-row .cs-open{padding:5px 12px;font-size:.6875rem}
  .lesson-row{border-radius:16px;padding:12px 16px}
  .ls-content.open{margin:6px 0 0 16px}
}

/* Review View */
.review-view{padding-top:var(--nav-h);min-height:100vh;display:none}
.review-view .lesson-view-header{background:var(--surface);border-bottom:1px solid var(--border);padding:16px 0}
.review-content{max-width:680px;margin:0 auto;padding:48px 24px}
.review-head{margin-bottom:32px}
.review-head .lesson-topic{display:inline-flex;padding:2px 10px;font-size:.75rem;font-weight:600;border-radius:100px;background:var(--primary-soft);color:var(--primary);margin-bottom:12px}
.review-head h2{font-size:clamp(1.75rem,3vw,2.25rem);font-weight:700;letter-spacing:-.03em;margin-bottom:8px}
.review-head p{color:var(--muted);line-height:1.6}
.review-sections-title{font-size:1.125rem;font-weight:700;letter-spacing:-.02em;margin-bottom:16px}
.review-sections{display:flex;flex-direction:column;gap:12px;margin-bottom:32px}
.review-section{display:flex;align-items:center;gap:16px;padding:20px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);cursor:pointer;transition:all .2s ease}
.review-section:hover{border-color:var(--primary-soft);box-shadow:var(--shadow-sm);transform:translateY(-1px)}
.review-num{width:32px;height:32px;border-radius:50%;background:var(--primary);color:var(--bg);display:flex;align-items:center;justify-content:center;font-size:.875rem;font-weight:800;flex-shrink:0}
.review-section-body{flex:1}
.review-section-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:2px}
.review-section-body h4{font-size:1rem;font-weight:700;margin-bottom:2px}
.review-section-body p{font-size:.8125rem;color:var(--muted);line-height:1.5}
.review-arrow{color:var(--primary);font-size:1.25rem;font-weight:700}

/* Lesson View */
.lesson-view{padding-top:var(--nav-h);min-height:100vh;display:none}
.lesson-view-header{background:var(--surface);border-bottom:1px solid var(--border);padding:16px 0}
.lesson-view-header .container{display:flex;align-items:center;gap:16px}
.lesson-view-header .back-btn{display:flex;align-items:center;gap:6px;font-size:0.875rem;font-weight:500;color:var(--muted);padding:8px 12px;border-radius:var(--radius);transition:all 0.2s}
.lesson-view-header .back-btn:hover{color:var(--ink);background:var(--surface-2)}
.lesson-view-body{padding:48px 0 64px}
.lesson-view-body .container{max-width:760px}
.lesson-content h2{font-size:1.75rem;font-weight:700;letter-spacing:-0.03em;margin-bottom:8px}
.lesson-content .lesson-topic-header{font-size:0.875rem;color:var(--muted);margin-bottom:32px}
.lesson-step{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;margin-bottom:24px}
.lesson-step h3{font-size:1.125rem;font-weight:700;margin-bottom:12px}
.lesson-step p{color:var(--muted);line-height:1.7;margin-bottom:16px}
.lesson-step .math-block{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;font-family:'Times New Roman',serif;font-size:1.25rem;text-align:center;margin:16px 0;color:var(--ink)}
.lesson-step .math-block .hl{color:var(--primary);font-weight:700}
.math-block{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;font-size:1.25rem;text-align:center;margin:16px 0;color:var(--ink);overflow-x:auto}
.math-block .katex{font-size:1.25rem}
.quiz-question .math-block{margin:12px 0}
.lesson-nav{display:flex;justify-content:space-between;margin-top:40px;padding-top:24px;border-top:1px solid var(--border)}

/* Quiz */
.quiz-view{padding-top:var(--nav-h);min-height:100vh;display:none}
.quiz-header{background:var(--surface);border-bottom:1px solid var(--border);padding:16px 0}
.quiz-header .container{display:flex;align-items:center;gap:16px}
.quiz-header .back-btn{display:flex;align-items:center;gap:6px;font-size:0.875rem;font-weight:500;color:var(--muted);padding:8px 12px;border-radius:var(--radius);transition:all 0.2s}
.quiz-header .back-btn:hover{color:var(--ink);background:var(--surface-2)}
.quiz-progress-bar{flex:1;height:6px;background:var(--border);border-radius:99px;overflow:hidden;max-width:400px}
.quiz-progress-bar .bar{height:100%;background:var(--primary);border-radius:99px;transition:width 0.4s ease}
.quiz-progress-text{font-size:0.8125rem;color:var(--muted);font-weight:600;min-width:60px;text-align:right}
.quiz-body{padding:48px 0 64px}
.quiz-body .container{max-width:680px}

/* Profile View */
.profile-view{padding-top:var(--nav-h);min-height:100vh;display:none}
.pv-header{background:var(--bg);border-bottom:1px solid var(--border);padding:12px 0}
.pv-header .container{display:flex;align-items:center}
.pv-back{display:flex;align-items:center;gap:4px;font-size:.8125rem;font-weight:500;color:var(--muted);padding:6px 10px;border-radius:var(--radius);transition:background .15s,color .15s}
.pv-back:hover{color:var(--ink);background:var(--surface)}
.pv-body{padding:48px 0 80px}
.pv-body .container{max-width:520px}
.pv-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px 36px;text-align:center}
.pv-photo-wrap{position:relative;width:88px;height:88px;margin:0 auto 20px}
.pv-photo{width:88px;height:88px;border-radius:50%;background:var(--primary);color:var(--bg);display:flex;align-items:center;justify-content:center;font-size:1.75rem;font-weight:700;letter-spacing:-.02em;overflow:hidden;transition:opacity .2s;position:relative}
.pv-photo img{width:100%;height:100%;object-fit:cover;display:block}
.pv-photo-edit{position:absolute;bottom:0;right:0;width:32px;height:32px;border-radius:50%;background:var(--primary);color:var(--bg);display:flex;align-items:center;justify-content:center;cursor:pointer;border:2px solid var(--bg);transition:background .15s,transform .15s;box-shadow:var(--shadow-sm);opacity:0;transform:scale(.85)}
.pv-photo-wrap:hover .pv-photo-edit{opacity:1;transform:scale(1)}
.pv-photo-edit:hover{background:var(--primary-hover)}
.pv-name{font-size:1.5rem;font-weight:700;letter-spacing:-.02em;margin-bottom:2px}
.pv-email{font-size:.8125rem;color:var(--muted);margin-bottom:20px}
.pv-level{font-size:.8125rem;margin-bottom:24px}
.pv-level select{padding:4px 28px 4px 10px;border:1px solid var(--border);border-radius:var(--radius);font-size:.8125rem;font-weight:500;background:var(--bg);color:var(--ink);appearance:none;-webkit-appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23847c70' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 8px center}
.pv-level select:hover{border-color:var(--primary)}
.pv-level select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}
.pv-stats{display:flex;align-items:center;justify-content:center;gap:0;margin-bottom:32px;padding:20px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.pv-stat{flex:1;text-align:center}
.pv-stat-num{font-size:1.375rem;font-weight:800;color:var(--primary);letter-spacing:-.02em}
.pv-stat-lbl{display:block;font-size:.6875rem;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.04em;margin-top:4px}
.pv-stat-divider{width:1px;height:36px;background:var(--border);flex-shrink:0}
.pv-progress{text-align:left;margin-bottom:4px}
.pv-progress-head{font-size:.875rem;font-weight:700;margin-bottom:20px;letter-spacing:-.01em}
.pv-progress-list{display:grid;gap:10px}
.pv-progress-row{display:grid;grid-template-columns:1fr auto;align-items:center;gap:10px;padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius);transition:border-color .15s}
.pv-progress-row:hover{border-color:var(--primary-soft)}
.pv-progress-row-title{font-size:.8125rem;font-weight:600;line-height:1.3}
.pv-progress-row-score{font-size:.75rem;font-weight:700;color:var(--primary);white-space:nowrap}
.pv-progress-row-bar{grid-column:1/-1;height:5px;background:var(--border);border-radius:99px;overflow:hidden}
.pv-progress-row-fill{height:100%;background:var(--primary);border-radius:99px;transition:width .4s}
.pv-progress-row.pending .pv-progress-row-fill{background:var(--border)}
.pv-progress-row.pending .pv-progress-row-score{color:var(--muted)}
.pv-signout{margin-top:8px;width:100%;justify-content:center}
.quiz-question{margin-bottom:40px}
.quiz-question .q-number{font-size:0.8125rem;color:var(--muted);font-weight:600;margin-bottom:8px}
.quiz-question h2{font-size:1.25rem;font-weight:700;letter-spacing:-0.02em;margin-bottom:24px;line-height:1.4}
.quiz-options{display:grid;gap:12px}
.quiz-option{display:block;padding:16px 20px;border:1.5px solid var(--border);border-radius:var(--radius);font-size:1rem;transition:all 0.2s;cursor:pointer}
.quiz-option:hover{border-color:var(--primary-soft);background:var(--primary-soft-2)}
.quiz-option.selected{border-color:var(--primary);background:var(--primary-soft)}
.quiz-option.correct{border-color:var(--success);background:var(--success-soft)}
.quiz-option.incorrect{border-color:var(--error);background:var(--error-soft)}
.quiz-actions{display:flex;gap:12px}
.quiz-result{margin-top:32px;padding:32px;border-radius:var(--radius-lg);border:1px solid var(--border);text-align:center}
.quiz-result .result-score{font-size:3rem;font-weight:800;color:var(--primary);letter-spacing:-0.03em}
.quiz-result .result-label{font-size:1rem;color:var(--muted);margin-top:4px;margin-bottom:16px}
.quiz-result .result-msg{font-size:1rem;margin-bottom:24px}

/* Review Page */
.review-view{padding-top:var(--nav-h);min-height:100vh;display:none}
.rv-header{background:var(--bg);border-bottom:1px solid var(--border);padding:12px 0}
.rv-header .container{display:flex;align-items:center}
.rv-back{display:flex;align-items:center;gap:4px;font-size:.8125rem;font-weight:500;color:var(--muted);padding:6px 10px;border-radius:var(--radius);transition:background .15s,color .15s}
.rv-back:hover{color:var(--ink);background:var(--surface)}
.rv-body{padding:32px 0 80px}
.rv-body .container{max-width:720px}
.rv-section{margin-bottom:32px}

/* Hero CTA */
.rv-hero{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;text-align:center}
.rv-hero-r{background:var(--surface);border:1px solid var(--primary-soft);border-radius:var(--radius-lg);padding:24px;text-align:center}
.rv-hero h2{font-size:1.25rem;font-weight:700;letter-spacing:-.02em;margin-bottom:6px}
.rv-hero p{font-size:.8125rem;color:var(--muted);max-width:400px;margin:0 auto;line-height:1.5}

/* Section labels */
.rv-section-header{margin-bottom:16px}
.rv-section-title{font-size:.75rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.rv-section-desc{font-size:.8125rem;color:var(--muted);margin-top:4px}

/* Weakest lessons ranking */
.rv-rank-row{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius);margin-bottom:6px;background:var(--surface);transition:all .15s;cursor:default}
.rv-rank-row:hover{border-color:var(--primary-soft);box-shadow:0 2px 6px oklch(0 0 0 / 0.06),0 4px 12px oklch(0 0 0 / 0.08);translate:0 -1px}
.rv-rank-num{width:20px;font-size:.6875rem;font-weight:700;color:var(--muted);flex-shrink:0;text-align:center}
.rv-rank-title{font-size:.8125rem;font-weight:600;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;color:var(--ink)}
.rv-rank-bar-wrap{flex:2;min-width:80px}
.rv-rank-bar{display:block;height:6px;background:var(--border);border-radius:99px;overflow:hidden}
.rv-rank-fill{height:100%;border-radius:99px;transition:width .4s;background:var(--primary);min-width:4px}
.rv-rank-pct{font-size:.6875rem;font-weight:700;color:var(--ink);min-width:28px;text-align:right;font-variant-numeric:tabular-nums}
.rv-rank-count{font-size:.6875rem;color:var(--muted);background:var(--bg);padding:1px 8px;border-radius:99px;font-variant-numeric:tabular-nums}

/* Mistakes group (details/summary) */
.rv-mistake-group{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:8px;overflow:hidden;background:var(--bg)}
.rv-mistake-summary{padding:14px 16px;font-size:.875rem;font-weight:600;cursor:pointer;background:var(--surface);display:flex;align-items:center;gap:10px;transition:background .12s;list-style:none}
.rv-mistake-summary::-webkit-details-marker{display:none}
.rv-mistake-summary:hover{background:var(--surface-2)}
.rv-mistake-summary::before{content:"";width:0;height:0;border-left:5px solid var(--muted);border-top:4px solid transparent;border-bottom:4px solid transparent;flex-shrink:0;transition:transform .15s}
details[open] .rv-mistake-summary::before{transform:rotate(90deg)}
.rv-mistake-count{font-size:.6875rem;font-weight:600;color:var(--muted);background:var(--bg);padding:2px 10px;border-radius:99px;margin-left:auto;flex-shrink:0}
.rv-mistake-list{padding:12px 16px 16px;display:grid;gap:8px}

/* Mistake card */
.rv-mistake-card{padding:14px 16px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);transition:border-color .12s}
.rv-mistake-card:hover{border-color:var(--primary-soft)}
.rv-mistake-q{font-size:.875rem;font-weight:600;margin-bottom:10px;line-height:1.4;color:var(--ink)}
.rv-mistake-q .math-block{display:inline;font-weight:500}
.rv-mistake-answers{display:flex;gap:20px;font-size:.8125rem}
.rv-wrong{color:var(--error);font-weight:600;display:flex;align-items:center;gap:5px}
.rv-right{color:var(--success);font-weight:600;display:flex;align-items:center;gap:5px}

/* SVG icon in wrong/right */
.rv-wrong-svg{width:14px;height:14px;flex-shrink:0}
.rv-right-svg{width:14px;height:14px;flex-shrink:0}

/* Empty state */
.rv-empty{padding:48px 24px;text-align:center;border:1px dashed var(--border);border-radius:var(--radius-lg)}
.rv-empty-icon{font-size:2rem;margin-bottom:12px;opacity:.4}
.rv-empty h3{font-size:1rem;font-weight:700;color:var(--ink);margin-bottom:4px}
.rv-empty p{font-size:.8125rem;color:var(--muted);margin:0}

/* Utility */
.hidden{display:none!important}

/* Mobile nav hamburger + drawer */
.nv-hamburger{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--ink);padding:4px;line-height:1;z-index:101}
.nv-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.3);z-index:99}
@media(max-width:900px){
  .nv-hamburger{display:block}
  .nv1{position:fixed;top:0;right:-280px;width:260px;height:100vh;background:var(--bg);flex-direction:column;align-items:stretch;gap:4px;padding:80px 16px 24px;z-index:100;box-shadow:-4px 0 24px rgba(0,0,0,.08);transition:right .3s cubic-bezier(.16,1,.3,1)}
  .nv1.open{right:0}
  .nv1 .nv-link{padding:14px 16px;border-radius:var(--radius);font-size:1rem;display:block}
  .nv1 .nv-cta{padding:14px 16px;flex-direction:column;gap:8px}
  .nv-overlay.show{display:block}
  .about-grid{grid-template-columns:1fr;gap:32px}
  .analysis-v1 .charts-grid{grid-template-columns:1fr}.bundle-grid{grid-template-columns:1fr}.pricing-grid{grid-template-columns:1fr;gap:16px}
  .pricing-card.featured{transform:none}
  .steps-grid{grid-template-columns:1fr;gap:32px}
  .steps-grid::before{display:none}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:600px){
  .section{padding:64px 0}
  .hero-split{flex-direction:column-reverse;gap:32px;text-align:center}
  .hero-text-col{text-align:center}
  .hero-desc{margin-left:auto;margin-right:auto}
  .hero-actions{justify-content:center}
  .hero-img-col{width:220px}
  .hero-img-frame{width:180px;height:180px}
  .features-grid{grid-template-columns:1fr}
  .testimonials-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .lc-grid{grid-template-columns:1fr}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%;justify-content:center}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:0s!important;animation-duration:0s!important}
}

.g2{max-width:var(--max-w);margin:0 auto;padding:16px 24px}
.g2 .g2-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.g2 .g2-header h2{font-size:1.25rem;font-weight:700;letter-spacing:-.02em}
.g2 .g2-header span{font-size:.8125rem;color:var(--muted);background:var(--bg);padding:6px 14px;border-radius:100px;border:1px solid var(--border)}
.g2 .g2-chart{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px}
.g2 .g2-chart svg{width:100%;height:auto;display:block}
.g2 .g2-legend{display:flex;gap:20px;justify-content:center;margin-top:16px;font-size:.75rem;color:var(--muted)}
.g2 .g2-legend .l-item{display:flex;align-items:center;gap:6px}
.g2 .g2-legend .l-swatch{width:10px;height:10px;border-radius:50%}
.g2 .g2-curve-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:16px}
.g2 .g2-curve-stat{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:16px;text-align:center}
.g2 .g2-curve-stat .num{font-size:1.5rem;font-weight:800;letter-spacing:-.02em}
.g2 .g2-curve-stat .lbl{font-size:.6875rem;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.04em;margin-top:4px}
.g2 .g2-curve-stat .chg{font-size:.6875rem;font-weight:600;display:inline-block;padding:1px 8px;border-radius:100px;margin-top:4px}
.g2 .g2-curve-stat .chg.up{background:var(--success-soft);color:var(--success)}

/* Lesson nav top */
.lesson-nav-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;gap:12px;flex-wrap:wrap}
.lesson-breadcrumb{font-size:.8125rem;color:var(--muted)}

/* Lesson tabs */
.lesson-tabs{display:flex;gap:8px;margin-bottom:24px;border-bottom:1px solid var(--border);padding-bottom:12px}
.tab-btn{padding:8px 20px;border-radius:var(--radius);border:none;font-size:.875rem;font-weight:600;background:var(--surface);color:var(--muted);cursor:pointer;transition:all .15s}
.tab-btn.active{background:var(--primary);color:var(--bg)}
.tab-btn:hover:not(.active){background:var(--surface-2);color:var(--ink)}

/* Exam intro */
.exam-intro{padding:32px;background:var(--surface);border-radius:var(--radius-lg);border:1px solid var(--border);text-align:center;margin-top:16px}
.exam-intro p{margin-bottom:20px;font-size:1rem;color:var(--muted)}
.exam-intro strong{color:var(--ink)}

/* HW step */
.hw-step{border-left:3px solid var(--warning)}

/* Lesson row actions */
.lr-actions{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap}
.lr-btn{padding:6px 14px;border:none;border-radius:var(--radius-sm);font-size:.75rem;font-weight:600;cursor:pointer;transition:all .15s;background:var(--primary-soft);color:var(--primary)}
.lr-btn:hover{background:var(--primary);color:var(--bg)}
.lr-btn.lr-exam{background:var(--success-soft);color:var(--success)}
.lr-btn.lr-exam:hover{background:var(--success);color:var(--bg)}

/* Inline lesson content */
.ls-content{overflow:hidden;max-height:0;opacity:0;transition:max-height .45s ease,opacity .3s ease,margin .3s ease;margin:0;padding:0 8px}
.ls-content.open{max-height:3000px;opacity:1;margin:0 0 8px}
.ls-inner{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-top:8px}
.ls-inner .lesson-step:last-child{margin-bottom:0}

/* Content display area */
.cs-content{overflow:hidden;max-height:0;opacity:0;transition:max-height .4s ease,opacity .3s ease;margin:0}
.cs-content:not(:empty){max-height:3000px;opacity:1;margin:0 0 8px}

/* Exam row */
.course-section-row.exam{border-left:3px solid var(--success);background:var(--success-soft)}

/* Custom Video Player — premium, minimal, brand-consistent */
.vp-wrap{position:relative;width:100%;max-width:800px;margin:16px auto;border-radius:10px;overflow:hidden;background:#000;aspect-ratio:16/9;cursor:pointer;user-select:none;-webkit-user-select:none}
.vp-video{width:100%;height:100%;display:block;outline:none}
.vp-loading{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;z-index:2;background:oklch(0 0 0 / .7);color:oklch(1 0 0 / .6)}
.vp-spinner{width:24px;height:24px;border:2px solid oklch(1 0 0 / .15);border-top-color:var(--primary);border-radius:50%;animation:vp-spin .65s linear infinite}
@keyframes vp-spin{to{transform:rotate(360deg)}}

/* Controls layer */
.vp-controls{position:absolute;inset:0;display:none;flex-direction:column;justify-content:flex-end;z-index:3;opacity:0;transition:opacity .2s}
.vp-controls.vp-visible{opacity:1}
.vp-ready .vp-controls{display:flex}
.vp-ctrl-bg{position:absolute;bottom:0;left:0;right:0;height:56px;background:linear-gradient(transparent,rgba(0,0,0,.55));pointer-events:none}

/* Timeline — sits at the very bottom edge */
.vp-timeline-wrap{position:relative;padding:0 12px;z-index:2}
.vp-timeline{height:20px;display:flex;align-items:center;cursor:pointer;position:relative}
.vp-track{position:absolute;left:0;right:0;height:3px;border-radius:99px;background:oklch(1 0 0 / .18);overflow:hidden;transition:height .15s}
.vp-timeline:hover .vp-track{height:5px}
.vp-buffer{position:absolute;left:0;top:0;height:100%;border-radius:99px;background:oklch(1 0 0 / .1);transition:width .1s}
.vp-progress{position:absolute;left:0;top:0;height:100%;border-radius:99px;background:var(--primary);transition:width .1s}
.vp-thumb{position:absolute;top:50%;width:10px;height:10px;border-radius:50%;background:#fff;transform:translate(-50%,-50%) scale(0);transition:transform .12s}
.vp-timeline:hover .vp-thumb{transform:translate(-50%,-50%) scale(1)}

/* Control row */
.vp-bottom{display:flex;align-items:center;justify-content:space-between;padding:2px 10px 6px;position:relative;z-index:2}
.vp-left,.vp-right{display:flex;align-items:center;gap:1px}
.vp-btn{background:none;border:none;color:oklch(1 0 0 / .85);cursor:pointer;padding:5px 6px;border-radius:4px;display:flex;align-items:center;justify-content:center;transition:color .15s,background .15s}
.vp-btn:hover{color:#fff;background:oklch(1 0 0 / .08)}
.vp-time{display:flex;align-items:center;gap:3px;color:oklch(1 0 0 / .65);font-size:.6875rem;font-weight:500;font-variant-numeric:tabular-nums;margin-left:4px;letter-spacing:.01em}
.vp-sep{color:oklch(1 0 0 / .25);margin:0 1px}

/* Speed control */
.vp-speed-wrap{position:relative}
.vp-speed-btn{font-weight:700;letter-spacing:.02em;min-width:28px}
.vp-speed-menu{position:absolute;bottom:100%;right:0;margin-bottom:6px;background:oklch(0.16 0.02 260);border:1px solid oklch(1 0 0 / .08);border-radius:8px;padding:4px;display:none;min-width:64px;z-index:10;box-shadow:0 8px 24px rgba(0,0,0,.5)}
.vp-sp-open .vp-speed-menu{display:block}
.vp-sp-opt{display:block;width:100%;text-align:center;padding:5px 10px;border:none;background:none;color:oklch(1 0 0 / .55);font-size:.6875rem;font-weight:500;cursor:pointer;border-radius:4px;white-space:nowrap}
.vp-sp-opt:hover{color:#fff;background:oklch(1 0 0 / .06)}
.vp-sp-opt.vp-sp-active{color:var(--primary)}

/* Help overlay */
.vp-help-overlay{position:fixed;inset:0;z-index:9999;background:rgba(0,0,0,.6);display:flex;align-items:center;justify-content:center}
.vp-help-box{background:oklch(0.14 0.015 80);border:1px solid oklch(1 0 0 / .08);border-radius:12px;padding:24px 28px;max-width:340px;width:90%;box-shadow:0 16px 48px rgba(0,0,0,.5)}
.vp-help-title{color:#fff;font-size:.875rem;font-weight:700;margin-bottom:16px;letter-spacing:-.01em}
.vp-help-grid{display:flex;flex-direction:column;gap:8px}
.vp-help-row{display:flex;align-items:center;gap:10px;font-size:.75rem;color:oklch(1 0 0 / .6)}
.vp-help-key{display:inline-flex;align-items:center;justify-content:center;min-width:48px;padding:3px 8px;background:oklch(1 0 0 / .08);border:1px solid oklch(1 0 0 / .1);border-radius:4px;font-size:.6875rem;font-weight:600;color:#fff;font-family:var(--font);text-align:center}
.vp-help-close{display:block;width:100%;margin-top:16px;padding:8px;border:none;border-radius:6px;background:var(--primary);color:var(--bg);font-size:.8125rem;font-weight:600;cursor:pointer}

/* Quality dropdown */
.vp-quality-wrap{position:relative}
.vp-quality-menu{position:absolute;bottom:100%;right:0;margin-bottom:6px;background:oklch(0.16 0.02 260);border:1px solid oklch(1 0 0 / .08);border-radius:8px;padding:4px;display:none;min-width:80px;z-index:10;box-shadow:0 8px 24px rgba(0,0,0,.5)}
.vp-q-open .vp-quality-menu{display:block}
.vp-q-opt{display:block;width:100%;text-align:left;padding:5px 10px;border:none;background:none;color:oklch(1 0 0 / .55);font-size:.6875rem;font-weight:500;cursor:pointer;border-radius:4px;white-space:nowrap;letter-spacing:.01em}
.vp-q-opt:hover{color:#fff;background:oklch(1 0 0 / .06)}
.vp-q-opt.vp-q-active{color:var(--primary)}

/* Volume */
.vp-volume-wrap{position:relative;display:flex;align-items:center}
.vp-volume-slider{display:none;position:absolute;bottom:100%;left:50%;transform:translateX(-50%);margin-bottom:6px;padding:8px 4px;background:oklch(0.16 0.02 260);border-radius:6px;height:72px;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(0,0,0,.5)}
.vp-volume-wrap:hover .vp-volume-slider{display:flex}
.vp-volume-slider input{-webkit-appearance:none;appearance:none;width:56px;height:3px;border-radius:99px;background:oklch(1 0 0 / .15);outline:none;writing-mode:vertical-lr;direction:rtl;transform:rotate(180deg)}
.vp-volume-slider input::-webkit-slider-thumb{-webkit-appearance:none;width:10px;height:10px;border-radius:50%;background:#fff;cursor:pointer}
.vp-volume-slider input::-moz-range-thumb{width:10px;height:10px;border-radius:50%;background:#fff;border:none;cursor:pointer}

/* Fullscreen */
.vp-wrap:fullscreen{max-width:100%;border-radius:0}
.vp-wrap:fullscreen .vp-video{object-fit:contain}
/* File download */
.file-download{display:flex;align-items:center;gap:12px;background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:14px 16px;margin:16px 0;max-width:480px}
.file-download svg{flex-shrink:0;color:var(--accent)}
.fd-body{flex:1;min-width:0}
.fd-link{display:block;font-size:.875rem;font-weight:600;color:var(--accent);text-decoration:underline;text-underline-offset:2px;word-break:break-all}
.fd-link:hover{color:var(--accent-hover)}
.fd-hint{font-size:.75rem;color:var(--muted);margin-top:2px;display:block}

/* PDF viewer */
.pdf-section{border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;margin:20px 0;background:var(--bg)}
.pdf-header{display:flex;align-items:center;gap:10px;padding:14px 16px;border-bottom:1px solid var(--border);background:var(--surface)}
.pdf-header svg{color:var(--error);flex-shrink:0}
.pdf-header span{font-size:.875rem;font-weight:600;flex:1}
.pdf-dl-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius);color:var(--muted);transition:color .15s,background .15s}
.pdf-dl-btn:hover{color:var(--ink);background:var(--surface-2)}
.pdf-viewer{position:relative;width:100%;background:#f5f5f5}
.pdf-iframe{width:100%;height:520px;border:none;display:block}
@media(max-width:600px){.pdf-iframe{height:360px}}

@media (prefers-reduced-motion:reduce){
  .vp-controls{transition:none}
  .vp-progress,.vp-buffer{transition:none}
  .vp-thumb{transition:none}
  .vp-spinner{animation:none}
}

/* Legacy fallback */
.video-container{position:relative;width:100%;max-width:800px;margin:16px auto;border-radius:var(--radius-lg);overflow:hidden;background:#000;aspect-ratio:16/9}
.video-player{width:100%;height:100%;display:block;outline:none}

/* Upload progress */
.upload-progress{display:flex;align-items:center;gap:8px;margin:8px 0;padding:6px 10px;background:var(--surface);border-radius:var(--radius);font-size:.75rem}
.upload-progress-bar{height:6px;flex:1;background:var(--border);border-radius:3px;overflow:hidden}
.upload-progress-fill{height:100%;width:0;background:var(--primary);border-radius:3px;transition:width .2s}
.upload-progress-text{color:var(--muted);white-space:nowrap;min-width:32px;text-align:right}

/* Student dashboard redesign */
.dash-header-inner{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:16px;margin-bottom:20px}
.dash-header-inner h1{font-size:1.5rem;font-weight:700;letter-spacing:-.03em;margin:0}
.dash-header-inner p{color:var(--muted);margin-top:2px;font-size:.875rem}
.dash-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px}
.ds-card{background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:16px;text-align:center}
.ds-val{font-size:1.5rem;font-weight:800;letter-spacing:-.03em;line-height:1.1}
.ds-lbl{font-size:.6875rem;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.04em;margin-top:4px}
.dash-body{padding:24px 0}
.dash-section{margin-bottom:24px}
.dash-section-title{font-size:.75rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:12px}
.dash-next-card{display:flex;align-items:center;gap:16px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:16px 20px;cursor:pointer;transition:all .15s;max-width:500px}
.dash-next-card:hover{border-color:var(--primary);box-shadow:0 2px 12px oklch(0 0 0 / .05)}
.dnc-icon{width:44px;height:44px;border-radius:10px;background:oklch(0.8 0.15 85 / .12);display:flex;align-items:center;justify-content:center;font-size:1.25rem;flex-shrink:0}
.dnc-body{flex:1;min-width:0}
.dnc-title{font-weight:600;font-size:.875rem;color:var(--ink)}
.dnc-meta{font-size:.75rem;color:var(--muted);margin-top:2px}
.dnc-arrow{font-size:1.2rem;color:var(--muted);flex-shrink:0}
.dash-courses{display:flex;flex-direction:column;gap:8px}
.dc-course{display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:12px 16px;cursor:pointer;transition:all .12s}
.dc-course:hover{border-color:oklch(0.7 0.12 85 / .25)}
.dcc-icon{font-size:1.2rem;flex-shrink:0;width:28px;text-align:center}
.dcc-body{flex:1;min-width:0}
.dcc-title{font-size:.8125rem;font-weight:600;color:var(--ink);margin-bottom:6px}
.dcc-bar{height:6px;border-radius:99px;background:var(--border);overflow:hidden}
.dcc-fill{height:100%;border-radius:99px;background:var(--primary);transition:width .5s ease}
.dcc-pct{font-size:.8125rem;font-weight:700;color:var(--muted);flex-shrink:0}
.dash-table-wrap{background:var(--surface);border:1px solid var(--border);border-radius:12px;overflow:hidden}
.dash-table{width:100%;border-collapse:collapse;font-size:.8125rem}
.dash-table th{text-align:left;padding:10px 16px;font-size:.6875rem;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;background:oklch(0 0 0 / .015);border-bottom:1px solid var(--border)}
.dash-table td{padding:9px 16px;border-bottom:1px solid var(--border);color:var(--ink)}
.dash-table tr:last-child td{border-bottom:none}
.dash-table tr:hover td{background:oklch(0 0 0 / .015)}
.dash-td-score{font-weight:700;font-variant-numeric:tabular-nums}
.dash-pass{color:var(--success)}
.dash-fail{color:var(--error)}
.dash-td-date{color:var(--muted);font-size:.75rem}
/* Performance chart */
.pf-chart-wrap{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:16px}
.pf-chart-wrap canvas{width:100%;height:280px;display:block;border-radius:8px}
.pf-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:14px}
.pf-stat{padding:12px;background:var(--bg);border:1px solid var(--border);border-radius:8px;text-align:center}
.pf-stat-val{font-size:1.125rem;font-weight:800;color:var(--ink);display:block;letter-spacing:-.02em}
.pf-stat-lbl{font-size:.6875rem;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.04em;margin-top:2px;display:block}

/* Responsive — shared narrow-screen adjustments */
@media(max-width:600px){
  .container{padding:0 16px}
  /* Prevent iOS zoom on inputs */
  input,select,textarea,button,.auth-input,.st-input,.search-input{font-size:16px!important}
  /* Fix hero overflow */
  .hero-img-col{width:auto;max-width:100%}
  .hero-img-frame{width:200px;height:200px}
  /* Landing sections */
  .section{padding:56px 0}
  .section-header{margin-bottom:40px}
  .steps-grid{grid-template-columns:1fr;gap:24px}
  .features-grid{grid-template-columns:1fr}
  /* Course / Lesson rows — fix Start button overflow */
  .course-section-row{flex-wrap:wrap;row-gap:8px}
  .course-section-row .cs-open{margin-left:auto}
  /* Video player — bigger touch targets */
  .vp-bottom{padding:4px 8px 8px;gap:6px}
  .vp-timeline-wrap{padding:0 8px}
  .vp-btn{padding:8px 10px;min-width:44px;min-height:44px}
  .vp-time{font-size:.75rem}
  .vp-help-box{padding:20px;max-width:300px}
  .vp-help-row{font-size:.6875rem;flex-wrap:wrap}
  .vp-speed-toggle{padding:8px 10px;min-height:44px}
  .vp-speed-toggle span{padding:6px 10px}
  .vp-quality-toggle{padding:8px 10px;min-height:44px}
  .vp-quality-toggle span{padding:6px 10px}
  .vp-vol-wrap{min-height:44px}
  /* Profile page */
  .pv-card{padding:24px 16px}
  .pv-photo-wrap{width:100px;height:100px}
  .pv-photo{width:100px;height:100px;font-size:1.75rem}
  .pv-photo-edit{width:36px;height:36px;font-size:1rem}
  .pv-name{font-size:1.25rem}
  .pv-stats{padding:16px 0}
  .pv-stat-num{font-size:1.125rem}
  .pv-body .container{max-width:100%}
  /* Review page */
  .rv-hero{padding:24px 16px}
  .rv-hero h2{font-size:1.125rem}
  .rv-rank-row{gap:8px;padding:12px 12px;min-height:44px}
  .rv-rank-bar-wrap{min-width:0}
  .rv-mistake-answers{flex-direction:column;gap:6px}
  .rv-mistake-card{padding:12px 14px}
  .rv-body .container{max-width:100%}
  /* Quiz page */
  .quiz-question h2{font-size:1.0625rem}
  .quiz-option{padding:14px 16px;font-size:1rem;min-height:44px}
  .quiz-result{padding:24px 16px}
  .quiz-result .result-score{font-size:2.25rem}
  .quiz-body .container{max-width:100%}
  /* Dashboard / Platform */
  .dash-stats{grid-template-columns:repeat(2,1fr)}
  .pf-stats{grid-template-columns:1fr;gap:8px}
  .dash-table th,.dash-table td{padding:10px 12px;font-size:.8125rem}
  .dc-course{padding:14px 16px}
  /* Admin */
  .admin-layout{flex-direction:column}
  .admin-sidebar{width:100%;position:static;display:flex;flex-wrap:wrap;gap:4px;margin-bottom:8px}
  .admin-sidebar a{padding:12px 16px;font-size:.875rem;flex:1 0 auto;justify-content:center;min-height:44px}
  .admin-sidebar a svg{width:16px;height:16px}
  .admin-header{flex-direction:column;align-items:stretch;gap:8px}
  .admin-header h1{font-size:1rem}
  .admin-header-actions{flex-wrap:wrap}
  .admin-header-actions .btn{min-height:44px;justify-content:center}
  /* General */
  .courses-header{flex-direction:column;gap:12px}
  .btn-sm{padding:10px 16px;min-height:44px}
  .nv-link{padding:10px 14px;min-height:44px}
  .back-btn{padding:10px 14px;min-height:44px}
  .rv-back{padding:10px 14px;min-height:44px}
  .btn-ghost{padding:10px 16px;min-height:44px}
  .dash-table .btn-sm{padding:8px 14px}
}
@media(max-width:480px){
  .hero-img-frame{width:160px;height:160px}
  .hero-text-col h1{font-size:clamp(1.8rem,7vw,2.2rem)}
  .dash-stats{grid-template-columns:1fr}
  .pf-stats{grid-template-columns:1fr}
  .about-stats{grid-template-columns:1fr}
}
@media(max-width:360px){
  .container{padding:0 12px}
  .hero-img-frame{width:140px;height:140px}
  .hero-img-col{width:auto}
  .hero-text-col h1{font-size:clamp(1.5rem,6vw,1.8rem)}
  .rv-rank-row{flex-direction:column;align-items:flex-start}
  .admin-sidebar a{flex:1 1 100%}
  .dash-table th,.dash-table td{padding:6px 8px;font-size:.6875rem}
}