*{margin:0;padding:0;box-sizing:border-box}
:root{
  --ink:#111827;--ink2:#374151;--ink3:#6b7280;--ink4:#9ca3af;
  --surface:#fff;--surface2:#f9fafb;--surface3:#f3f4f6;
  --teal:#059669;--teal-light:#d1fae5;--teal-dark:#047857;
  --border:#e5e7eb;--border2:#d1d5db;
  --radius:12px;--radius-sm:8px;--radius-xs:6px;
}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;color:var(--ink);background:#fff;line-height:1.6;overflow-x:hidden}
h1,h2,h3,h4,h5{font-family:'Plus Jakarta Sans','Inter',system-ui,sans-serif;line-height:1.2;font-weight:700}
a{text-decoration:none;color:inherit}

/* NAV */
nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.97);border-bottom:1px solid var(--border);padding:0 6%}
.nav-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{font-family:'Plus Jakarta Sans','Inter',sans-serif;font-weight:800;font-size:1.3rem;color:var(--ink);display:flex;align-items:center;gap:8px}
.logo-mark{width:32px;height:32px;background:var(--teal);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.logo-mark svg{width:18px;height:18px;fill:none;stroke:#fff;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}
.nav-links{display:flex;align-items:center;gap:2rem}
.nav-links a{font-size:.9rem;color:var(--ink2);font-weight:500;transition:color .15s}
.nav-links a:hover{color:var(--teal)}
.nav-right{display:flex;align-items:center;gap:.75rem}
.btn-ghost{font-size:.875rem;font-weight:500;color:var(--ink2);padding:.5rem 1rem;border-radius:var(--radius-xs);transition:background .15s}
.btn-ghost:hover{background:var(--surface3)}
.btn-nav{background:var(--ink);color:#fff;font-size:.875rem;font-weight:600;padding:.55rem 1.25rem;border-radius:var(--radius-xs);transition:background .15s}
.btn-nav:hover{background:#1f2937}

/* HERO */
.hero{padding:80px 6% 72px;max-width:1200px;margin:0 auto;text-align:center}
.hero-pill{display:inline-flex;align-items:center;gap:6px;background:var(--teal-light);color:var(--teal-dark);font-size:.78rem;font-weight:600;padding:.35rem 1rem;border-radius:20px;letter-spacing:.02em;margin-bottom:2rem}
.hero-pill-dot{width:6px;height:6px;border-radius:50%;background:var(--teal);display:inline-block}
h1.hero-h{font-size:3.5rem;font-weight:800;color:var(--ink);letter-spacing:-.03em;max-width:780px;margin:0 auto 1.5rem;line-height:1.1}
h1.hero-h em{color:var(--teal);font-style:normal}
.hero-sub{font-size:1.05rem;color:var(--ink3);max-width:560px;margin:0 auto 2.5rem;line-height:1.75;font-weight:400}
.hero-btns{display:flex;gap:.75rem;justify-content:center;flex-wrap:wrap;margin-bottom:3.5rem}
.btn-primary{background:var(--teal);color:#fff;font-weight:600;font-size:.95rem;padding:.8rem 2rem;border-radius:var(--radius-sm);transition:background .15s,transform .15s;display:inline-block}
.btn-primary:hover{background:var(--teal-dark);transform:translateY(-1px)}
.btn-outline{background:#fff;color:var(--ink);font-weight:500;font-size:.95rem;padding:.8rem 2rem;border-radius:var(--radius-sm);border:1.5px solid var(--border2);transition:border-color .15s,transform .15s;display:inline-block}
.btn-outline:hover{border-color:var(--ink);transform:translateY(-1px)}
.hero-stats{display:flex;justify-content:center;gap:3rem;padding-top:2.5rem;border-top:1px solid var(--border)}
.hero-stat{text-align:center}
.hero-stat-num{font-family:'Plus Jakarta Sans','Inter',sans-serif;font-size:1.75rem;font-weight:800;color:var(--ink)}
.hero-stat-label{font-size:.8rem;color:var(--ink3);margin-top:4px}

/* HERO MOCKUP */
.hero-img-wrap{max-width:1000px;margin:3rem auto 0;border-radius:16px;overflow:hidden;border:1px solid var(--border);box-shadow:0 20px 60px rgba(0,0,0,.08),0 4px 16px rgba(0,0,0,.04)}
.hero-img-bar{background:#f3f4f6;border-bottom:1px solid var(--border);padding:.6rem 1rem;display:flex;align-items:center;gap:.5rem}
.hib-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}
.hib-url{background:#fff;border:1px solid var(--border);border-radius:4px;font-size:.75rem;color:var(--ink3);padding:.2rem .75rem;margin-left:.5rem;max-width:280px}
.dashboard-mock{background:var(--surface2);display:flex;min-height:380px}
.mock-sidebar{background:#fff;border-right:1px solid var(--border);padding:1.25rem;width:220px;flex-shrink:0}
.mock-sidebar-logo{font-family:'Plus Jakarta Sans','Inter',sans-serif;font-weight:800;font-size:.9rem;color:var(--ink);display:flex;align-items:center;gap:6px;margin-bottom:1.25rem}
.mock-sidebar-dot{width:20px;height:20px;background:var(--teal);border-radius:5px;flex-shrink:0}
.mock-nav-item{font-size:.75rem;color:var(--ink3);padding:.45rem .6rem;border-radius:5px;margin-bottom:2px}
.mock-nav-item.active{background:var(--teal-light);color:var(--teal-dark);font-weight:600}
.mock-main{padding:1.5rem;flex:1;min-width:0}
.mock-header{font-family:'Plus Jakarta Sans','Inter',sans-serif;font-size:.95rem;font-weight:700;color:var(--ink);margin-bottom:1rem}
.mock-stats-row{display:flex;gap:.75rem;margin-bottom:1.25rem}
.mock-stat-box{background:#fff;border:1px solid var(--border);border-radius:var(--radius-xs);padding:.75rem;flex:1}
.mock-stat-n{font-family:'Plus Jakarta Sans','Inter',sans-serif;font-size:1.3rem;font-weight:800;color:var(--ink)}
.mock-stat-l{font-size:.68rem;color:var(--ink3);margin-top:2px}
.mock-lessons{background:#fff;border:1px solid var(--border);border-radius:var(--radius-xs);overflow:hidden}
.mock-lesson-row{display:flex;align-items:center;justify-content:space-between;padding:.65rem 1rem;border-bottom:1px solid var(--surface3)}
.mock-lesson-row:last-child{border-bottom:none}
.mock-lesson-left{display:flex;align-items:center;gap:.6rem}
.mock-lesson-icon{width:28px;height:28px;border-radius:5px;background:var(--teal-light);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.mock-lesson-name{font-weight:600;color:var(--ink);font-size:.75rem}
.mock-lesson-meta{font-size:.65rem;color:var(--ink3);margin-top:1px}
.mock-badge-watched{background:var(--teal-light);color:var(--teal-dark);font-size:.65rem;font-weight:700;padding:.15rem .5rem;border-radius:20px}
.mock-badge-prog{background:#fef3c7;color:#92400e;font-size:.65rem;font-weight:600;padding:.15rem .5rem;border-radius:20px}
.mock-badge-up{background:var(--surface3);color:var(--ink3);font-size:.65rem;padding:.15rem .5rem;border-radius:20px}
.mock-watermark-row{display:flex;align-items:center;justify-content:space-between;padding:.5rem 1rem;background:var(--surface2)}
.mock-watermark{display:inline-block;background:rgba(0,0,0,.5);color:rgba(255,255,255,.9);font-size:.62rem;padding:.2rem .5rem;border-radius:3px}

/* LOGOS */
.logos-bar{background:var(--surface2);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:1.75rem 6%;text-align:center}
.logos-bar-label{font-size:.75rem;color:var(--ink4);letter-spacing:.08em;text-transform:uppercase;font-weight:600;margin-bottom:1.25rem}
.logos-row{display:flex;justify-content:center;align-items:center;gap:3rem;flex-wrap:wrap}
.logo-item{font-family:'Plus Jakarta Sans','Inter',sans-serif;font-weight:700;font-size:.9rem;color:#d1d5db}

/* SECTIONS */
section{padding:88px 6%}
.section-wrap{max-width:1200px;margin:0 auto}
.section-eyebrow{font-size:.75rem;font-weight:700;color:var(--teal);letter-spacing:.1em;text-transform:uppercase;margin-bottom:.75rem}
.section-title{font-size:2.4rem;font-weight:800;color:var(--ink);letter-spacing:-.025em;margin-bottom:1rem}
.section-desc{font-size:1rem;color:var(--ink3);max-width:500px;line-height:1.75}
.section-centered{text-align:center}
.section-centered .section-desc{margin:0 auto}

/* HOW IT WORKS */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem;margin-top:3.5rem}
.step-card{padding:2rem;border:1px solid var(--border);border-radius:var(--radius);background:#fff;transition:box-shadow .2s,transform .2s}
.step-card:hover{box-shadow:0 8px 32px rgba(0,0,0,.07);transform:translateY(-3px)}
.step-num{width:36px;height:36px;border-radius:var(--radius-xs);background:var(--ink);color:#fff;font-family:'Plus Jakarta Sans','Inter',sans-serif;font-weight:800;font-size:.85rem;display:flex;align-items:center;justify-content:center;margin-bottom:1.25rem}
.step-card h3{font-size:1.05rem;font-weight:700;color:var(--ink);margin-bottom:.6rem}
.step-card p{font-size:.875rem;color:var(--ink3);line-height:1.7}

/* FEATURES */
.features-bg{background:var(--surface2)}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem;margin-top:3.5rem}
.feat-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;transition:box-shadow .2s}
.feat-card:hover{box-shadow:0 4px 20px rgba(0,0,0,.06)}
.feat-icon{width:40px;height:40px;border-radius:var(--radius-xs);display:flex;align-items:center;justify-content:center;margin-bottom:1rem;flex-shrink:0}
.feat-icon svg{width:20px;height:20px;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.fi-green{background:#d1fae5}.fi-green svg{stroke:#059669}
.fi-blue{background:#dbeafe}.fi-blue svg{stroke:#2563eb}
.fi-purple{background:#ede9fe}.fi-purple svg{stroke:#7c3aed}
.fi-orange{background:#ffedd5}.fi-orange svg{stroke:#ea580c}
.fi-gray{background:#f3f4f6}.fi-gray svg{stroke:#6b7280}
.feat-card h3{font-size:.95rem;font-weight:700;color:var(--ink);margin-bottom:.4rem}
.feat-card p{font-size:.82rem;color:var(--ink3);line-height:1.65}
.feat-soon{display:inline-block;font-size:.65rem;font-weight:700;background:#ede9fe;color:#7c3aed;padding:.15rem .5rem;border-radius:20px;margin-top:.4rem}

/* AI DEMO SECTION */
.ai-section{background:var(--ink);padding:88px 6%}
.ai-wrap{max-width:1100px;margin:0 auto}
.ai-header{text-align:center;margin-bottom:3.5rem}
.ai-eyebrow{font-size:.75rem;font-weight:700;color:var(--teal);letter-spacing:.1em;text-transform:uppercase;margin-bottom:.75rem}
.ai-title{font-size:2.4rem;font-weight:800;color:#fff;letter-spacing:-.025em;margin-bottom:1rem}
.ai-desc{font-size:1rem;color:#9ca3af;max-width:520px;margin:0 auto;line-height:1.75}
.slides-container{position:relative;background:#1f2937;border-radius:16px;overflow:hidden;border:1px solid #374151}
.slides-bar{background:#111827;padding:.7rem 1rem;display:flex;align-items:center;gap:.5rem;border-bottom:1px solid #374151}
.slides-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}
.slides-title{font-size:.75rem;color:#6b7280;margin-left:.5rem}
.slide{display:none;padding:3rem 4rem;min-height:380px;flex-direction:column;justify-content:center}
.slide.active{display:flex}
.slide-tag{font-size:.72rem;font-weight:700;color:var(--teal);letter-spacing:.1em;text-transform:uppercase;margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}
.slide-tag-icon{width:24px;height:24px;background:var(--teal-light);border-radius:6px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.slide-tag-icon svg{width:14px;height:14px;fill:none;stroke:var(--teal);stroke-width:2;stroke-linecap:round}
.slide h2{font-size:2rem;font-weight:800;color:#fff;letter-spacing:-.02em;margin-bottom:1rem;max-width:560px}
.slide p{font-size:.95rem;color:#9ca3af;line-height:1.75;max-width:540px;margin-bottom:1.5rem}
.slide-points{list-style:none;display:flex;flex-direction:column;gap:.6rem;margin-bottom:2rem}
.slide-points li{display:flex;align-items:flex-start;gap:.6rem;font-size:.875rem;color:#d1d5db}
.sp-check{width:18px;height:18px;border-radius:50%;background:rgba(5,150,105,.25);display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px}
.sp-check svg{width:10px;height:10px;fill:none;stroke:var(--teal);stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
.slide-visual{margin-top:1.5rem;background:#111827;border-radius:var(--radius);padding:1.25rem;border:1px solid #374151;max-width:520px}
.quiz-q{font-size:.875rem;font-weight:600;color:#fff;margin-bottom:.875rem}
.quiz-opt{display:flex;flex-direction:column;gap:.5rem}
.quiz-opt-item{padding:.6rem .875rem;border-radius:var(--radius-xs);border:1px solid #374151;font-size:.82rem;color:#9ca3af;transition:all .15s;cursor:pointer}
.quiz-opt-item.correct{border-color:var(--teal);background:rgba(5,150,105,.15);color:#6ee7b7}
.quiz-opt-item.wrong{border-color:#ef4444;background:rgba(239,68,68,.1);color:#fca5a5}
.quiz-opt-item.neutral:hover{border-color:#6b7280}
.summary-box{background:#111827;border-radius:var(--radius);padding:1.25rem;border:1px solid #374151;max-width:520px;margin-top:1.5rem}
.summary-label{font-size:.7rem;font-weight:700;color:var(--teal);text-transform:uppercase;letter-spacing:.08em;margin-bottom:.6rem}
.summary-text{font-size:.82rem;color:#d1d5db;line-height:1.7}
.recommend-grid{display:flex;flex-direction:column;gap:.6rem;margin-top:1.5rem;max-width:520px}
.recommend-item{background:#111827;border-radius:var(--radius-xs);padding:.75rem 1rem;border:1px solid #374151;display:flex;align-items:center;justify-content:space-between}
.rec-left{display:flex;align-items:center;gap:.6rem}
.rec-icon{width:28px;height:28px;border-radius:5px;background:rgba(5,150,105,.2);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.rec-icon svg{width:14px;height:14px;fill:none;stroke:var(--teal);stroke-width:2;stroke-linecap:round}
.rec-name{font-size:.8rem;font-weight:600;color:#fff}
.rec-meta{font-size:.68rem;color:#6b7280;margin-top:1px}
.rec-score{font-size:.75rem;font-weight:700;color:var(--teal)}
.slides-nav{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.5rem;border-top:1px solid #374151;background:#111827}
.slides-dots{display:flex;gap:.5rem;align-items:center}
.slide-dot{width:8px;height:8px;border-radius:50%;background:#374151;cursor:pointer;transition:background .15s,transform .15s}
.slide-dot.active{background:var(--teal);transform:scale(1.25)}
.slides-arrows{display:flex;gap:.5rem}
.slide-arrow{width:36px;height:36px;border-radius:var(--radius-xs);border:1px solid #374151;background:transparent;color:#9ca3af;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s,color .15s;font-size:1rem}
.slide-arrow:hover{background:#374151;color:#fff}
.slide-label{font-size:.78rem;color:#6b7280}

/* PRICING */
.pricing-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem;max-width:720px;margin:3.5rem auto 0}
.pricing-info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem 2rem}
.price-card{background:#fff;border:1.5px solid var(--border);border-radius:var(--radius);padding:2rem;position:relative}
.price-card.featured{border-color:var(--teal)}
.price-popular-tag{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--teal);color:#fff;font-size:.7rem;font-weight:700;padding:.25rem .9rem;border-radius:20px;white-space:nowrap}
.price-tier{font-size:.8rem;font-weight:700;color:var(--ink3);text-transform:uppercase;letter-spacing:.06em;margin-bottom:.5rem}
.price-value{font-family:'Plus Jakarta Sans','Inter',sans-serif;font-size:2.2rem;font-weight:800;color:var(--ink);margin-bottom:.25rem}
.price-value span{font-size:.9rem;font-weight:500;color:var(--ink3)}
.price-note{font-size:.8rem;color:var(--ink3);padding-bottom:1.25rem;border-bottom:1px solid var(--border);margin-bottom:1.25rem}
.price-list{list-style:none;display:flex;flex-direction:column;gap:.55rem;margin-bottom:1.75rem}
.price-list li{display:flex;align-items:center;gap:.6rem;font-size:.85rem;color:var(--ink2)}
.price-check{width:18px;height:18px;border-radius:50%;background:var(--teal-light);flex-shrink:0;display:flex;align-items:center;justify-content:center}
.price-check svg{width:10px;height:10px;fill:none;stroke:var(--teal);stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
.btn-price-outline{width:100%;padding:.75rem;border-radius:var(--radius-xs);font-weight:600;font-size:.875rem;border:1.5px solid var(--border2);background:#fff;color:var(--ink);cursor:pointer;transition:border-color .15s;font-family:'Plus Jakarta Sans','Inter',sans-serif}
.btn-price-outline:hover{border-color:var(--ink)}
.btn-price-filled{width:100%;padding:.75rem;border-radius:var(--radius-xs);font-weight:600;font-size:.875rem;border:none;background:var(--teal);color:#fff;cursor:pointer;transition:background .15s;font-family:'Plus Jakarta Sans','Inter',sans-serif}
.btn-price-filled:hover{background:var(--teal-dark)}

/* TESTIMONIALS */
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;margin-top:3.5rem}
.testi-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem}
.testi-stars{display:flex;gap:2px;margin-bottom:.875rem}
.testi-stars span{color:#f59e0b;font-size:13px}
.testi-text{font-size:.875rem;color:var(--ink2);line-height:1.7;margin-bottom:1.25rem}
.testi-author{display:flex;align-items:center;gap:.6rem}
.testi-av{width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:'Plus Jakarta Sans','Inter',sans-serif;font-weight:700;font-size:.75rem;color:#fff;flex-shrink:0}
.testi-name{font-size:.85rem;font-weight:600;color:var(--ink)}
.testi-role{font-size:.73rem;color:var(--ink3)}

/* CTA */
.cta-section{background:var(--ink);padding:80px 6%;text-align:center}
.cta-section h2{font-size:2.4rem;font-weight:800;color:#fff;letter-spacing:-.025em;margin-bottom:.875rem}
.cta-section p{font-size:1rem;color:#9ca3af;max-width:440px;margin:0 auto 2.25rem;line-height:1.7}
.btn-cta{display:inline-block;background:#fff;color:var(--ink);font-weight:700;font-size:.95rem;padding:.85rem 2.25rem;border-radius:var(--radius-sm);transition:opacity .15s}
.btn-cta:hover{opacity:.9}

/* FOOTER */
footer{background:var(--surface2);border-top:1px solid var(--border);padding:56px 6% 32px}
.footer-grid{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2.5fr 1fr 1fr 1fr;gap:3rem;margin-bottom:3rem}
.footer-brand-logo{font-family:'Plus Jakarta Sans','Inter',sans-serif;font-weight:800;font-size:1.1rem;color:var(--ink);display:flex;align-items:center;gap:6px;margin-bottom:.75rem}
.footer-brand-mark{width:24px;height:24px;background:var(--teal);border-radius:6px;flex-shrink:0}
.footer-brand p{font-size:.82rem;color:var(--ink3);line-height:1.7;max-width:220px}
.footer-col h4{font-size:.8rem;font-weight:700;color:var(--ink);text-transform:uppercase;letter-spacing:.06em;margin-bottom:.875rem}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:.5rem}
.footer-col ul a{font-size:.82rem;color:var(--ink3);transition:color .15s}
.footer-col ul a:hover{color:var(--teal)}
.footer-bottom{max-width:1200px;margin:0 auto;padding-top:1.5rem;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}
.footer-bottom p{font-size:.78rem;color:var(--ink4)}

/* HAMBURGER & MOBILE NAV */
.nav-hamburger{display:none;flex-direction:column;justify-content:center;gap:5px;width:36px;height:36px;background:none;border:none;cursor:pointer;padding:4px;border-radius:var(--radius-xs)}
.nav-hamburger span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:all .2s}
.nav-mobile{display:none;flex-direction:column;gap:.25rem;padding:.75rem 6% 1rem;border-top:1px solid var(--border);background:#fff}
.nav-mobile a{font-size:.9rem;font-weight:500;color:var(--ink2);padding:.6rem .5rem;border-radius:var(--radius-xs);transition:background .15s}
.nav-mobile a:hover{background:var(--surface3)}
.nav-mobile.open{display:flex}

/* FADE */
.fade{opacity:0;transform:translateY(20px);transition:opacity .55s ease,transform .55s ease}
.fade.in{opacity:1;transform:translateY(0)}

@media(max-width:960px){
  h1.hero-h{font-size:2.4rem}
  .steps-grid,.features-grid,.testi-grid{grid-template-columns:1fr 1fr}
  .pricing-grid{grid-template-columns:1fr 1fr !important}
  .pricing-compare-grid{grid-template-columns:1fr 1fr !important}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
  .nav-hamburger{display:flex}
  .btn-ghost{display:none}
  .btn-nav{display:none}
  .mock-sidebar{display:none}
  .slide{padding:2rem;min-height:320px}
  .slide h2{font-size:1.5rem}
  .hero-stats{gap:1.5rem;flex-wrap:wrap}
  /* Demo section tablet */
  .demo-steps-layout{flex-direction:column;gap:1.5rem}
  .demo-steps-list{width:100%;flex-direction:row;flex-wrap:wrap;gap:.4rem}
  .demo-step-btn{flex:1;min-width:140px}
  .demo-step-sub{display:none}
  .demo-content{width:100%}
  .demo-tabs{overflow-x:auto;padding-bottom:0}
  .demo-tab{font-size:.8rem;padding:.65rem 1rem}
  .ds-row{flex-direction:column;gap:0}
  .ds-stat-row{flex-wrap:wrap}
  .ds-stat{min-width:80px}
}

@media(max-width:600px){
  h1.hero-h{font-size:1.85rem}
  .steps-grid,.features-grid,.testi-grid{grid-template-columns:1fr}
  .section-title{font-size:1.8rem}
  .cta-section h2{font-size:1.8rem}
  .ai-title{font-size:1.8rem}
  .slide{padding:1.25rem;min-height:auto}
  .slide h2{font-size:1.25rem;max-width:100%}
  .slide p{font-size:.83rem;max-width:100%;margin-bottom:1rem}
  .slides-container{border-radius:10px}
  .slides-nav{flex-wrap:wrap;gap:.5rem;padding:.75rem 1rem}
  .slide-label{width:100%;text-align:center;font-size:.72rem}
  .slides-dots{justify-content:center}
  .slides-arrows{justify-content:center}
  .slide-arrow{width:32px;height:32px;font-size:.85rem}
  .slide-points{gap:.4rem;margin-bottom:1rem}
  .slide-points li{font-size:.78rem}

  /* Demo section mobile */
  .demo-steps-layout{flex-direction:column;gap:1rem}
  .demo-steps-list{width:100%;flex-direction:column;gap:.35rem}
  .demo-step-btn{width:100%;padding:.65rem .75rem}
  .demo-step-num{width:20px;height:20px;font-size:.68rem;flex-shrink:0}
  .demo-step-title{font-size:.8rem}
  .demo-step-sub{display:none}
  .demo-content{width:100%}
  .demo-screen-body{padding:1rem;min-height:auto}
  .demo-desc{padding:.875rem 1rem}
  .demo-nav{padding:.75rem 1rem;flex-wrap:wrap;gap:.5rem}
  .demo-tabs{gap:.25rem}
  .demo-tab{font-size:.78rem;padding:.55rem .75rem;gap:.35rem}
  .demo-tab-icon{width:20px;height:20px}
  .ds-table{font-size:.72rem}
  .ds-table th{font-size:.65rem;padding:.4rem .5rem}
  .ds-table td{padding:.45rem .5rem}
  .ds-stat-row{gap:.5rem}
  .ds-stat{padding:.55rem .6rem}
  .ds-stat-n{font-size:1.1rem}
  .ds-card{padding:.65rem .75rem}
  .ds-row{flex-direction:column;gap:0}
  .ds-video-row{flex-wrap:wrap}
  .ds-video-thumb{width:48px;height:30px}
  .hero-stats{flex-wrap:wrap;gap:1rem;justify-content:flex-start}
  .hero-stat{text-align:left;min-width:120px}
  .logos-row{gap:1.25rem}
  .footer-grid{grid-template-columns:1fr}
  .slide-points li{font-size:.8rem}
  .summary-box,.recommend-grid{max-width:100%}
  .slide-visual{max-width:100%}
  .demo-screen-bar{padding:.45rem .75rem}
  .demo-screen-label{font-size:.68rem}
  .ds-section-title{font-size:.78rem}
  .ds-btn{font-size:.72rem;padding:.35rem .6rem}
  .pricing-grid{grid-template-columns:1fr !important;max-width:420px;margin:0 auto}
  .pricing-compare-grid{grid-template-columns:1fr !important}
  .pricing-info-grid{grid-template-columns:1fr !important}
  .pop-badge{font-size:.65rem}
}

/* DEMO SECTION */
.demo-section{background:#fff;padding:88px 6%}
.demo-wrap{max-width:1200px;margin:0 auto}
.demo-tabs{display:flex;gap:.5rem;margin-top:3rem;border-bottom:2px solid var(--border);padding-bottom:0}
.demo-tab{padding:.75rem 1.5rem;font-size:.875rem;font-weight:600;color:var(--ink3);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;transition:color .2s,border-color .2s;white-space:nowrap;display:flex;align-items:center;gap:.5rem}
.demo-tab:hover{color:var(--ink)}
.demo-tab.active{color:var(--teal);border-bottom-color:var(--teal)}
.demo-tab-icon{width:24px;height:24px;border-radius:6px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.demo-tab-icon svg{width:13px;height:13px;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.ti-inst{background:#dbeafe}.ti-inst svg{stroke:#2563eb}
.ti-teach{background:#ffedd5}.ti-teach svg{stroke:#ea580c}
.ti-stu{background:#d1fae5}.ti-stu svg{stroke:#059669}
.demo-panel{display:none;padding:2.5rem 0 0}
.demo-panel.active{display:block}
.demo-steps-layout{display:flex;gap:2.5rem;align-items:flex-start}
.demo-steps-list{width:260px;flex-shrink:0;display:flex;flex-direction:column;gap:.5rem}
.demo-step-btn{display:flex;align-items:flex-start;gap:.875rem;padding:.875rem 1rem;border-radius:var(--radius-sm);cursor:pointer;transition:background .15s;border:1px solid transparent;text-align:left}
.demo-step-btn:hover{background:var(--surface2)}
.demo-step-btn.active{background:var(--surface2);border-color:var(--border)}
.demo-step-num{width:24px;height:24px;border-radius:50%;background:var(--surface3);color:var(--ink3);font-size:.72rem;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:1px;transition:background .2s,color .2s}
.demo-step-btn.active .demo-step-num{background:var(--teal);color:#fff}
.demo-step-title{font-size:.85rem;font-weight:600;color:var(--ink);line-height:1.3}
.demo-step-sub{font-size:.75rem;color:var(--ink3);margin-top:2px;line-height:1.4}
.demo-content{flex:1;min-width:0;background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.demo-screen{display:none;flex-direction:column}
.demo-screen.active{display:flex}
.demo-screen-bar{background:#f3f4f6;border-bottom:1px solid var(--border);padding:.55rem 1rem;display:flex;align-items:center;gap:.4rem}
.demo-screen-dot{width:9px;height:9px;border-radius:50%;flex-shrink:0}
.demo-screen-label{font-size:.72rem;color:var(--ink3);margin-left:.4rem;font-weight:500}
.demo-screen-body{padding:1.5rem;background:#fff;min-height:340px}
.demo-desc{background:var(--surface2);border-top:1px solid var(--border);padding:1rem 1.5rem;display:flex;align-items:flex-start;gap:.75rem}
.demo-desc-icon{width:28px;height:28px;border-radius:6px;flex-shrink:0;display:flex;align-items:center;justify-content:center}
.demo-desc-icon svg{width:14px;height:14px;fill:none;stroke-width:2;stroke-linecap:round}
.demo-desc-text{font-size:.82rem;color:var(--ink2);line-height:1.65}
.demo-nav{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.5rem;border-top:1px solid var(--border);background:var(--surface2)}
.demo-nav-btn{font-size:.82rem;font-weight:600;color:var(--ink2);background:transparent;border:1px solid var(--border2);padding:.45rem 1rem;border-radius:var(--radius-xs);cursor:pointer;transition:background .15s,color .15s}
.demo-nav-btn:hover{background:var(--surface3)}
.demo-nav-btn.primary{background:var(--teal);color:#fff;border-color:var(--teal)}
.demo-nav-btn.primary:hover{background:var(--teal-dark)}
.demo-progress{display:flex;gap:.35rem}
.demo-prog-dot{width:7px;height:7px;border-radius:50%;background:var(--border2);transition:background .2s}
.demo-prog-dot.active{background:var(--teal)}

/* Demo screen UI elements */
.ds-form-group{margin-bottom:1rem}
.ds-label{font-size:.75rem;font-weight:600;color:var(--ink2);margin-bottom:.35rem}
.ds-input{width:100%;border:1px solid var(--border2);border-radius:var(--radius-xs);padding:.55rem .75rem;font-size:.82rem;color:var(--ink);background:#fff}
.ds-input.filled{border-color:var(--teal);background:#f0fdf4;color:var(--ink)}
.ds-select{width:100%;border:1px solid var(--border2);border-radius:var(--radius-xs);padding:.55rem .75rem;font-size:.82rem;color:var(--ink);background:#fff}
.ds-row{display:flex;gap:.75rem}
.ds-row .ds-form-group{flex:1}
.ds-btn{display:inline-flex;align-items:center;gap:.4rem;padding:.55rem 1.1rem;border-radius:var(--radius-xs);font-size:.8rem;font-weight:600;cursor:pointer;border:none}
.ds-btn-primary{background:var(--teal);color:#fff}
.ds-btn-secondary{background:var(--surface3);color:var(--ink2);border:1px solid var(--border)}
.ds-btn-danger{background:#fee2e2;color:#991b1b}
.ds-table{width:100%;border-collapse:collapse;font-size:.78rem}
.ds-table th{background:var(--surface2);padding:.5rem .75rem;text-align:left;font-weight:600;color:var(--ink2);border-bottom:1px solid var(--border);font-size:.72rem;text-transform:uppercase;letter-spacing:.04em}
.ds-table td{padding:.55rem .75rem;border-bottom:1px solid var(--surface3);color:var(--ink2)}
.ds-table tr:last-child td{border-bottom:none}
.ds-badge{display:inline-block;font-size:.68rem;font-weight:700;padding:.15rem .5rem;border-radius:20px}
.ds-badge-green{background:var(--teal-light);color:var(--teal-dark)}
.ds-badge-yellow{background:#fef3c7;color:#92400e}
.ds-badge-gray{background:var(--surface3);color:var(--ink3)}
.ds-badge-blue{background:#dbeafe;color:#1e40af}
.ds-stat-row{display:flex;gap:.75rem;margin-bottom:1.25rem}
.ds-stat{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius-xs);padding:.75rem 1rem;flex:1;text-align:center}
.ds-stat-n{font-size:1.3rem;font-weight:800;font-family:'Plus Jakarta Sans','Inter',sans-serif;color:var(--ink)}
.ds-stat-l{font-size:.68rem;color:var(--ink3);margin-top:2px}
.ds-section-title{font-size:.82rem;font-weight:700;color:var(--ink);margin-bottom:.75rem}
.ds-card{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius-xs);padding:.875rem 1rem;margin-bottom:.6rem}
.ds-progress-bar{background:var(--surface3);border-radius:4px;height:6px;margin-top:.35rem;overflow:hidden}
.ds-progress-fill{height:100%;border-radius:4px;background:var(--teal)}
.ds-video-row{display:flex;align-items:center;gap:.75rem;padding:.6rem 0;border-bottom:1px solid var(--surface3)}
.ds-video-row:last-child{border-bottom:none}
.ds-video-thumb{width:56px;height:36px;background:linear-gradient(135deg,#1e3a5f,#0d3d2e);border-radius:4px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.ds-video-info{flex:1;min-width:0}
.ds-video-name{font-size:.8rem;font-weight:600;color:var(--ink)}
.ds-video-meta{font-size:.7rem;color:var(--ink3);margin-top:2px}
.ds-upload-area{border:2px dashed var(--border2);border-radius:var(--radius-sm);padding:2rem;text-align:center;background:var(--surface2)}
.ds-upload-icon{width:40px;height:40px;background:var(--surface3);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto .75rem}
.ds-upload-icon svg{width:18px;height:18px;fill:none;stroke:var(--ink3);stroke-width:2;stroke-linecap:round}
.ds-progress-upload{background:var(--surface3);border-radius:4px;height:8px;margin:1rem 0 .35rem;overflow:hidden}
.ds-progress-upload-fill{height:100%;border-radius:4px;background:var(--teal);width:72%}
.ds-alert{padding:.75rem 1rem;border-radius:var(--radius-xs);font-size:.8rem;margin-bottom:1rem;display:flex;align-items:center;gap:.6rem}
.ds-alert-success{background:#f0fdf4;border:1px solid #bbf7d0;color:#166534}
.ds-alert-info{background:#eff6ff;border:1px solid #bfdbfe;color:#1e40af}
.ds-watermark-preview{position:relative;background:linear-gradient(135deg,#1a2540,#0d3d2e);border-radius:var(--radius-xs);aspect-ratio:16/9;display:flex;align-items:center;justify-content:center;margin-bottom:.75rem;overflow:hidden}
.ds-watermark-text{position:absolute;top:10px;right:10px;background:rgba(0,0,0,.5);color:rgba(255,255,255,.85);font-size:.6rem;padding:.2rem .45rem;border-radius:3px}
.ds-play-btn{width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,.2);border:2px solid rgba(255,255,255,.5);display:flex;align-items:center;justify-content:center}
.ds-play-triangle{width:0;height:0;border-style:solid;border-width:7px 0 7px 14px;border-color:transparent transparent transparent #fff;margin-left:3px}

/* Table scroll wrapper for mobile */
.ds-table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--radius-xs)}
.ds-table-wrap .ds-table{min-width:420px}