*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{--c-bg:#f8fafc;--c-surface:#fff;--c-border:#e2e8f0;--c-text:#1e293b;--c-muted:#64748b;--c-accent:#7c3aed;--c-accent-light:#ede9fe}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans SC",sans-serif;color:var(--c-text);background:var(--c-bg);line-height:1.7}
a{color:var(--c-accent);text-decoration:none}
.container{max-width:960px;margin:0 auto;padding:0 24px}
section{padding:80px 0}
h2{font-size:28px;font-weight:800;text-align:center;margin-bottom:12px}
.section-desc{text-align:center;color:var(--c-muted);margin-bottom:40px;font-size:16px}

/* Header */
.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--c-border);transition:box-shadow .3s}
.header.scrolled{box-shadow:0 1px 8px rgba(0,0,0,.06)}
.nav{max-width:960px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:56px}
.logo{font-size:18px;font-weight:700;color:var(--c-text)}
.nav-menu{display:flex;gap:24px}
.nav-menu a{font-size:14px;color:var(--c-muted);transition:color .2s}
.nav-menu a:hover{color:var(--c-accent)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 20px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;border:none;transition:all .2s;text-decoration:none}
.btn-sm{padding:6px 16px;font-size:13px}
.btn-primary{background:var(--c-accent);color:#fff}
.btn-primary:hover{opacity:.9;transform:translateY(-1px)}
.btn-outline{border:2px solid var(--c-border);color:var(--c-text);background:var(--c-surface)}
.btn-outline:hover{border-color:var(--c-accent);color:var(--c-accent)}
.btn-block{width:100%}
.menu-btn{display:none;background:none;border:none;font-size:22px;cursor:pointer;color:var(--c-text)}

/* Hero */
.hero{padding:80px 0 64px;text-align:center}
.badge{display:inline-block;background:var(--c-accent-light);color:var(--c-accent);padding:4px 14px;border-radius:20px;font-size:13px;font-weight:600;margin-bottom:20px}
.hero h1{font-size:40px;font-weight:900;line-height:1.25;margin-bottom:12px;letter-spacing:-0.5px}
.hero-desc{font-size:17px;color:var(--c-muted);max-width:500px;margin:0 auto 28px}
.hero-actions{display:flex;justify-content:center;gap:12px;margin-bottom:40px}
.hero-stats{display:flex;justify-content:center;gap:48px}
.stat-item{text-align:center}
.stat-item strong{display:block;font-size:24px;font-weight:800;color:var(--c-accent)}
.stat-item span{font-size:12px;color:var(--c-muted)}

/* Cards */
.features-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:16px}
.card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:12px;padding:28px 22px;transition:all .25s}
.card:hover{border-color:var(--c-accent);box-shadow:0 4px 20px rgba(124,58,237,.08)}
.card-icon{font-size:28px;margin-bottom:12px}
.card h3{font-size:16px;font-weight:700;margin-bottom:6px}
.card p{font-size:13px;color:var(--c-muted);line-height:1.6}

/* Who needs */
.who-needs{background:var(--c-surface);border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border)}
.who-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.who-card{background:var(--c-bg);padding:20px;border-radius:10px;font-size:14px;border:1px solid transparent;transition:all .2s}
.who-card:hover{border-color:var(--c-accent-light);background:var(--c-surface)}

/* Extensions suite */
.ext-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;max-width:1080px;margin:0 auto}
.ext-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:16px;padding:32px 26px;text-align:center;transition:all .3s;position:relative}
.ext-card:hover{border-color:var(--c-accent);box-shadow:0 6px 28px rgba(124,58,237,.1);transform:translateY(-3px)}
.ext-card.featured{border-color:var(--c-accent);box-shadow:0 6px 28px rgba(124,58,237,.12)}
.ext-icon{width:64px;height:64px;border-radius:18px;background:linear-gradient(135deg,#7c3aed,#4f46e5);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;box-shadow:0 6px 16px rgba(124,58,237,.25)}
.ext-card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.ext-card p{font-size:13px;color:var(--c-muted);line-height:1.6;margin-bottom:14px}
.ext-card ul{list-style:none;text-align:left;margin:0 0 18px}
.ext-card li{position:relative;padding:5px 0 5px 22px;font-size:13px;color:var(--c-muted)}
.ext-card li::before{position:absolute;left:0;top:8px;width:14px;height:14px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Ccircle cx='8' cy='8' r='7' fill='%2310b981'/%3E%3Cpath d='M5 8.2 7.1 10.4 11 5.8' stroke='%23fff' stroke-width='1.8' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat center/contain;content:""}
.ext-note{max-width:760px;margin:26px auto 0;text-align:center;font-size:13px;color:var(--c-muted);background:var(--c-surface);border:1px solid #a7f3d0;border-radius:10px;padding:12px 18px}

/* Pricing */
.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(155px,1fr));gap:14px;max-width:1100px;margin:0 auto}
.price-card{background:var(--c-surface);border:2px solid var(--c-border);border-radius:14px;padding:32px 24px;text-align:center;transition:all .3s}
.price-card.featured{border-color:var(--c-accent);box-shadow:0 4px 24px rgba(124,58,237,.1);margin-top:12px}
.price-card h3{font-size:17px;font-weight:700}
.price-num{font-size:36px;font-weight:800;color:var(--c-accent);margin:12px 0 4px}
.price-num span{font-size:16px;font-weight:500;color:var(--c-muted)}
.price-card ul{list-style:none;text-align:left;margin:20px 0}
.price-card li{position:relative;padding:5px 0 5px 22px;font-size:13px;color:var(--c-muted)}
.price-card li::before{position:absolute;left:0;top:8px;width:14px;height:14px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Ccircle cx='8' cy='8' r='7' fill='%2310b981'/%3E%3Cpath d='M5 8.2 7.1 10.4 11 5.8' stroke='%23fff' stroke-width='1.8' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat center/contain;content:""}
.popular-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--c-accent);color:#fff;padding:4px 16px;border-radius:12px;font-size:12px;font-weight:700;z-index:1;white-space:nowrap}
.price-card.featured{position:relative}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px}
.step{text-align:center}
.step-num{width:44px;height:44px;border-radius:50%;background:var(--c-accent);color:#fff;font-size:18px;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 12px}
.step h4{font-size:15px;font-weight:700;margin-bottom:6px}
.step p{font-size:13px;color:var(--c-muted)}

/* FAQ */
.faq-list{max-width:700px;margin:0 auto}
.faq-item{border:1px solid var(--c-border);border-radius:10px;margin-bottom:8px;overflow:hidden}
.faq-item summary{padding:16px 20px;font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between}
.faq-item summary::after{content:"▾"}
.faq-item[open] summary::after{content:"▴"}
.faq-item p{padding:0 20px 16px;font-size:13px;color:var(--c-muted);line-height:1.7}

/* Changelog */
.cl-list{max-width:600px;margin:0 auto}
.cl-item{padding:12px 16px;background:var(--c-surface);border:1px solid var(--c-border);border-radius:8px;margin-bottom:8px}
.cl-item strong{color:var(--c-accent);font-size:14px}
.cl-item span{color:var(--c-muted);font-size:12px;margin-left:8px}
.cl-item p{font-size:13px;color:var(--c-muted);margin-top:4px}

/* Download */
.dl-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;max-width:1100px;margin:0 auto}
.dl-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:14px;padding:28px;text-align:center}
.dl-card h3{font-size:17px;margin-bottom:8px}
.dl-card p{font-size:13px;color:var(--c-muted);margin-bottom:16px}
.install-steps{margin-top:20px;text-align:left;font-size:13px;color:var(--c-muted)}
.install-steps ol{padding-left:20px}
.install-steps li{margin-bottom:4px}
.install-steps code{background:var(--c-bg);padding:1px 5px;border-radius:3px;font-size:12px}

/* Feedback */
.fb-form{max-width:480px;margin:0 auto;display:flex;flex-direction:column;gap:10px}
.fb-form input,.fb-form select,.fb-form textarea{padding:10px 14px;border:2px solid var(--c-border);border-radius:8px;font-size:14px;font-family:inherit;outline:none;resize:vertical}
.fb-form :focus{border-color:var(--c-accent)}

/* Footer */
.footer{background:var(--c-surface);border-top:1px solid var(--c-border);padding:48px 0 24px}
.footer-grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:32px;margin-bottom:24px}
.footer-grid>div{display:flex;flex-direction:column;gap:6px}
.footer-grid strong{font-size:14px;margin-bottom:4px}
.footer-grid p{font-size:12px;color:var(--c-muted)}
.footer-grid a{font-size:13px;color:var(--c-muted);transition:color .2s}
.footer-grid a:hover{color:var(--c-accent)}
.footer-copy{text-align:center;font-size:12px;color:#94a3b8;padding-top:16px;border-top:1px solid var(--c-border)}


/* Layout polish */
section:nth-child(even){background:var(--c-surface)}
.hero{padding:60px 0 48px}
.hero h1{font-size:36px}
.card{padding:24px 20px}
.price-card{padding:24px 20px}
.price-num{font-size:32px}
.faq-item summary{font-size:14px}
.cl-list{max-width:700px}
.dl-grid{max-width:900px}
@media(max-width:768px){
  .pricing-grid{grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px}
  .dl-grid{grid-template-columns:1fr}
  section{padding:56px 0}
  .hero h1{font-size:24px}
  .hero-desc{font-size:15px}
}

@media(max-width:768px){
  .hero h1{font-size:26px}
  .hero-stats{gap:24px}
  .nav-menu{display:none;position:absolute;top:56px;left:0;right:0;background:var(--c-surface);flex-direction:column;padding:16px;border-bottom:1px solid var(--c-border);box-shadow:0 8px 16px rgba(0,0,0,.08)}
  .nav-menu.open{display:flex}
  .menu-btn{display:block}
  .footer-grid{flex-direction:column}
}

.card-icon svg{display:block}

.privacy-content{max-width:600px;margin:0 auto;font-size:14px;color:var(--c-muted);line-height:2}