:root{
  --bg:#ffffff; --fg:#0b1220; --muted:#56606f; --accent:#6b5cff; --card:#f6f7fb;
}
.dark{
  --bg:#0b0f14; --fg:#e6eef6; --muted:#9aa6b5; --accent:#8f7bff; --card:#0e141b;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial; background:var(--bg); color:var(--fg); -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;}

/* Subtle textured background (light and dark variants) */
body{background:var(--bg)}
body.dark{background:var(--bg)}
.container{max-width:1100px;margin:0 auto;padding:28px}
.site-header{position:fixed;top:0;left:0;right:0;width:100%;background:linear-gradient(to right, rgba(255,255,255,0.9), rgba(255,255,255,0.6));backdrop-filter:blur(6px);border-bottom:1px solid rgba(0,0,0,0.04);z-index:1000}
.dark .site-header{background:linear-gradient(to right, rgba(10,14,20,0.6), rgba(10,14,20,0.4))}
.header-inner{display:flex;align-items:center;gap:16px}
.brand{font-weight:700;letter-spacing:1px;text-decoration:none;color:var(--fg);font-size:16px}
.nav{margin-left:20px;flex:1}
.nav a{margin-right:16px;color:var(--muted);text-decoration:none;font-size:14px}

/* Mobile nav toggle */
.nav-toggle{display:none;background:transparent;border:0;font-size:22px;cursor:pointer;margin-right:8px}
.nav.mobile-open{position:absolute;left:0;right:0;top:100%;background:var(--card);padding:12px 20px;display:flex;flex-direction:column;gap:8px;border-bottom-left-radius:12px;border-bottom-right-radius:12px;box-shadow:0 8px 24px rgba(0,0,0,0.08)}
.nav.mobile-open a{color:var(--fg);margin:0}


/* Nav dynamic underline */
.nav-wrapper{position:relative;display:inline-block}
.nav-underline{position:absolute;left:0;bottom:-6px;height:3px;background:var(--accent);border-radius:3px;transition:width 0.25s ease, transform 0.25s ease, opacity 0.2s ease;opacity:0}
.nav a:hover{color:var(--fg)}
.nav a.active{color:var(--fg);font-weight:700}
.header-actions{display:flex;gap:10px;align-items:center}
.btn{display:inline-block;padding:8px 14px;border-radius:8px;text-decoration:none;font-weight:600;border:1px solid transparent;font-size:14px}
.btn.ghost{background:transparent;border:1px solid rgba(0,0,0,0.06);color:var(--fg)}
.btn.primary{background:var(--accent);color:white}
.btn.secondary{background:transparent;border:1px solid rgba(0,0,0,0.08);color:var(--fg);margin-right:8px}
.btn.purchase{background:linear-gradient(90deg,#ff6b6b,#ff4757);color:white;border:0;box-shadow:0 8px 24px rgba(255,71,87,0.18);padding:10px 14px;border-radius:10px;font-weight:700}
.btn.purchase:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(255,71,87,0.22)}
.btn.large{padding:12px 18px;font-size:15px;border-radius:10px}
#themeToggle{background:transparent;border:0;font-size:18px;cursor:pointer}

/* Hero */
.hero{padding:80px 0 60px;position:relative;/* base background uses theme vars; optional image can be provided via --hero-image */
  background-image: var(--hero-image, none), linear-gradient(135deg, var(--bg) 0%, var(--card) 100%);
  background-size: cover;
  background-position: center;
}

/* subtle color overlay to give depth while keeping text readable */
.hero::before{content:'';position:absolute;inset:0;pointer-events:none;border-radius:0;z-index:0;background:linear-gradient(135deg, rgba(107,92,255,0.06), rgba(107,92,255,0.02));}
/* ensure content sits above overlay */
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1fr 480px;gap:50px;align-items:center;position:relative;z-index:1}
.hero h1{font-size:3.2rem;font-weight:800;line-height:1.1;margin:0;background:linear-gradient(135deg, var(--fg) 0%, var(--accent) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.lead{color:var(--muted);font-size:20px;margin-top:16px;line-height:1.6}
.cta-row{margin-top:32px;display:flex;gap:16px;align-items:center}
.btn.large{padding:16px 24px;font-size:16px;border-radius:12px;transition:all 0.3s ease;box-shadow:0 4px 12px rgba(107,92,255,0.3)}
.btn.large:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(107,92,255,0.4)}
.btn.ghost{transition:all 0.3s ease;border:2px solid var(--accent);color:var(--accent)}
.btn.ghost:hover{background:var(--accent);color:white;transform:translateY(-1px)}
.bullets{list-style:none;margin-top:24px;color:var(--muted);padding:0}
.bullets li{position:relative;padding-left:24px;margin-bottom:8px;font-size:16px}
.bullets li::before{content:'✓';position:absolute;left:0;color:var(--accent);font-weight:bold;font-size:14px}

.main-content{padding-top:var(--header-height,88px)}
/* Script Display */
.script-display{margin-top:32px;animation:slideDown 0.3s ease-out}
@keyframes slideDown{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}
.script-container{background:var(--card);padding:24px;border-radius:16px;border:2px solid var(--accent);box-shadow:0 8px 24px rgba(107,92,255,0.15)}
.script-container h3{margin:0 0 16px;color:var(--fg);font-size:1.3rem;font-weight:600}
.script-code{display:flex;align-items:center;gap:12px;background:var(--bg);padding:16px;border-radius:12px;border:1px solid rgba(107,92,255,0.2);position:relative}
.script-code code{flex:1;font-family:'Monaco', 'Menlo', 'Ubuntu Mono', monospace;font-size:14px;color:var(--fg);background:none;padding:0;word-break:break-all;line-height:1.5}
.copy-btn{background:var(--accent);color:white;border:none;padding:8px 12px;border-radius:8px;cursor:pointer;font-size:16px;transition:all 0.3s ease;min-width:40px;height:40px;display:flex;align-items:center;justify-content:center}
.copy-btn:hover{background:#5a4bff;transform:scale(1.05)}
.copy-btn:active{transform:scale(0.95)}
.copy-btn.copied{background:#10b981;animation:pulse 0.6s ease}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.1)}}
.script-description{margin:16px 0 0;color:var(--muted);font-size:14px;text-align:center;font-style:italic}
.screenshot-placeholder{height:320px;background:var(--card);display:flex;align-items:center;justify-content:center;border-radius:16px;color:var(--muted);font-weight:600;box-shadow:0 8px 24px rgba(0,0,0,0.1)}
.screenshot-image{width:100%;height:320px;object-fit:cover;border-radius:16px;box-shadow:0 8px 24px rgba(0,0,0,0.1);opacity:0.9;transition:all 0.3s ease;transform:scale(1.05)}
.screenshot-image:hover{opacity:1;transform:scale(1.08);box-shadow:0 12px 32px rgba(0,0,0,0.15)}

/* Features */
.features{padding:72px 20px;background:linear-gradient(135deg, var(--bg) 0%, var(--card) 100%);position:relative}
.features::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;opacity:0;pointer-events:none}
.features h2{text-align:center;font-size:2.6rem;font-weight:800;margin-bottom:18px;color:var(--fg);position:relative;z-index:1}
.features h2::after{content:'';position:absolute;bottom:-8px;left:50%;transform:translateX(-50%);width:48px;height:4px;background:linear-gradient(90deg, var(--accent), #8f7bff);border-radius:2px}
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:36px;position:relative;z-index:1}
.feature{background:var(--card);padding:14px 12px;border-radius:12px;min-height:140px;transition:all 0.28s cubic-bezier(0.4, 0, 0.2, 1);border:1px solid rgba(107,92,255,0.06);position:relative;overflow:hidden;display:flex;flex-direction:column;align-items:center;text-align:center;box-shadow:0 6px 18px rgba(0,0,0,0.04)}
.feature::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg, var(--accent), #8f7bff, #6b5cff);opacity:0;transition:opacity 0.28s ease}
.feature::after{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle, rgba(107,92,255,0.06) 0%, transparent 70%);opacity:0;transition:opacity 0.28s ease;pointer-events:none}
.feature:hover{transform:translateY(-6px);box-shadow:0 14px 28px rgba(107,92,255,0.10);border-color:var(--accent)}
.feature:hover::before{opacity:1}
.feature:hover::after{opacity:1}
.feature .icon-container{width:54px;height:54px;background:linear-gradient(135deg, var(--accent), #8f7bff);border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;position:relative;overflow:hidden}
.feature .icon-container::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg, rgba(255,255,255,0.14), transparent);opacity:0;transition:opacity 0.28s ease}
.feature:hover .icon-container::before{opacity:1}
.icon{width:28px;height:28px;fill:white;transition:all 0.28s ease}
.feature:hover .icon{transform:scale(1.06) rotate(3deg)}
.feature h3{margin:0 0 8px;font-size:1.05rem;font-weight:700;color:var(--fg);line-height:1.25}
.feature p{color:var(--muted);line-height:1.5;font-size:13px;margin:0;flex-grow:1;display:flex;align-items:center}

/* Purchase page */
.purchase-hero{padding:60px 0 80px;text-align:center}
.purchase-grid{display:flex;gap:24px;justify-content:center;margin:28px 0}
.price-card{background:var(--card);padding:20px;border-radius:12px;min-width:220px;border:1px solid rgba(0,0,0,0.04);box-shadow:0 8px 24px rgba(0,0,0,0.06)}
.price-card h3{margin:0 0 8px;font-size:1.2rem}
.price{font-size:28px;font-weight:800;color:var(--fg);margin:8px 0}
.price-card .btn{width:100%;display:inline-flex;justify-content:center}
.price-card.highlight{border:2px solid var(--accent);background:linear-gradient(180deg, rgba(107,92,255,0.06), var(--card));transform:translateY(-4px)}
.badge.recommended{position:absolute;top:12px;right:12px;background:var(--accent);color:white;padding:6px 10px;border-radius:999px;font-weight:700;font-size:12px;box-shadow:0 6px 18px rgba(107,92,255,0.14)}
.price-card{position:relative}

/* bilingual badge layout */
.badge.recommended{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:6px 10px}
/* badge text sizing and contrast */
.badge-zh{font-size:13px;line-height:1;font-weight:800;letter-spacing:0.2px}
.badge-en{font-size:10px;opacity:0.9;line-height:1;display:none}
.badge-icon{margin-right:6px;vertical-align:middle;display:inline-block}

/* Desktop: slightly larger and higher contrast for badge */
@media (min-width:901px){
  .badge.recommended{padding:8px 12px}
  .badge-zh{font-size:14px}
  .badge-en{font-size:11px}
  .badge-icon{width:16px;height:16px;margin-right:8px}
}

/* Mobile: smaller but readable */
@media (max-width:900px){
  .badge.recommended{padding:6px 10px}
  .badge-zh{font-size:12px}
  .badge-icon{width:12px;height:12px;margin-right:6px}
}

/* show English label on hover or when document language is English */
.badge.recommended:hover .badge-en,
html[lang="en"] .badge.recommended .badge-en{
  display:block;
}
.badge.recommended:hover .badge-zh{opacity:0.95}

/* subtle float + pulse animation for badge */
.badge.recommended{transform:translateY(0);transition:transform 240ms ease}
.badge.recommended::after{content:'';display:block;width:40%;height:6px;background:rgba(0,0,0,0.06);border-radius:50%;margin-top:6px;opacity:0.9}
@keyframes badgeFloat{0%{transform:translateY(0)}50%{transform:translateY(-4px)}100%{transform:translateY(0)}}
@keyframes badgePulse{0%{box-shadow:0 6px 18px rgba(107,92,255,0.14)}50%{box-shadow:0 12px 28px rgba(107,92,255,0.18)}100%{box-shadow:0 6px 18px rgba(107,92,255,0.14)}}
.badge.recommended.animate{animation: badgeFloat 3s ease-in-out infinite, badgePulse 3s ease-in-out infinite}

/* respect user's reduced motion preference */
@media (prefers-reduced-motion: reduce){
  .badge.recommended.animate{animation:none}
}
.price-card ul{list-style:none;padding:0;margin:8px 0 16px;color:var(--muted)}
.purchase-form{max-width:520px;margin:20px auto;text-align:left}
.purchase-form form{display:flex;flex-direction:column;gap:12px}
.purchase-form label{display:flex;flex-direction:column;font-weight:600;color:var(--fg)}
.purchase-form input,.purchase-form select{padding:8px;border-radius:8px;border:1px solid rgba(0,0,0,0.08);}

@media (max-width:900px){
  .purchase-grid{flex-direction:column;gap:18px}
}

/* Screens */
.screens{padding:60px 0;background:linear-gradient(135deg, var(--card) 0%, var(--bg) 100%)}
.screens h2{text-align:center;font-size:2.5rem;font-weight:700;margin-bottom:16px;color:var(--fg)}
.carousel{position:relative;max-width:980px;margin:0 auto;margin-top:30px}
.carousel-track{overflow:hidden;border-radius:16px}
.carousel-slide{display:none;align-items:center;justify-content:center}
.carousel-slide.active{display:flex}
.carousel-image{width:100%;height:560px;object-fit:cover;border-radius:12px;box-shadow:0 12px 30px rgba(0,0,0,0.12);transition:transform 0.45s ease}
.carousel-btn{position:absolute;top:50%;transform:translateY(-50%);background:rgba(0,0,0,0.5);color:white;border:0;padding:12px 16px;border-radius:8px;cursor:pointer;font-size:28px;z-index:40}
.carousel-btn:hover{background:rgba(0,0,0,0.65)}
.carousel-btn.prev{left:12px}
.carousel-btn.next{right:12px}
.carousel-dots{display:flex;gap:8px;justify-content:center;margin-top:14px;margin-bottom:6px}
.carousel-dots button{width:10px;height:10px;border-radius:50%;background:rgba(0,0,0,0.2);border:0;cursor:pointer}
.carousel-dots button.active{background:var(--accent);transform:scale(1.2)}
.carousel-caption{display:none}

/* Slide overlay (hover / focus) */
.carousel-slide{position:relative}
.slide-overlay{position:absolute;left:0;right:0;bottom:0;padding:18px 20px;background:linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.55) 100%);color:white;border-radius:0 0 12px 12px;transform:translateY(12px);opacity:0;transition:all 0.28s ease}
.slide-overlay span{font-weight:700;font-size:16px}
.carousel-slide:hover .slide-overlay, .carousel-slide:focus .slide-overlay, .carousel-slide.active .slide-overlay{transform:translateY(0);opacity:1}

@media (max-width:900px){
  .carousel-image{height:380px}
}

@media (max-width:520px){
  .carousel-image{height:260px}
  .carousel-btn{padding:8px 10px;font-size:22px}
}

/* Modal (purchase) */
.modal[hidden]{display:none}
.modal{position:fixed;inset:0;z-index:2000;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity 200ms ease}
.modal.open{opacity:1;pointer-events:auto}
.modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,0.5);backdrop-filter:blur(2px);opacity:0;transition:opacity 200ms ease}
.modal.open .modal-backdrop{opacity:1}
.modal-panel{position:relative;background:var(--bg);color:var(--fg);max-width:640px;width:92%;border-radius:12px;box-shadow:0 24px 60px rgba(0,0,0,0.35);z-index:2;overflow:hidden;border:1px solid rgba(0,0,0,0.06);transform:translateY(8px) scale(0.98);opacity:0;transition:transform 240ms cubic-bezier(0.2,0,0,1), opacity 240ms ease}
.modal.open .modal-panel{transform:translateY(0) scale(1);opacity:1}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid rgba(0,0,0,0.04)}
.modal-title-wrap{display:flex;flex-direction:column}
.modal-header h3{margin:0;font-size:18px}
.modal-subtitle{margin:4px 0 0;color:var(--muted);font-size:13px}
.modal-close{background:transparent;border:0;font-size:18px;cursor:pointer}
.modal-body{padding:18px 20px;color:var(--muted);line-height:1.6}
.modal-body a{color:var(--accent);text-decoration:none}
.modal-body a:hover{text-decoration:underline}

/* Script / code block styling */
.script-container{margin-top:8px}
.script-code{position:relative;background:linear-gradient(180deg,var(--card),var(--bg));border-radius:12px;padding:14px;border:1px solid rgba(0,0,0,0.06);box-shadow:0 8px 24px rgba(0,0,0,0.06);display:flex;align-items:flex-start;gap:12px}
.script-code pre{margin:0;font-family:Menlo,Monaco,ui-monospace,SFMono-Regular,Consolas,'Liberation Mono',monospace;font-size:13px;color:var(--fg);white-space:pre-wrap;word-break:break-all}
.script-code code{background:none}
.copy-btn{position:relative;flex:0 0 44px;height:44px;border-radius:10px;border:0;background:var(--accent);color:white;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;font-size:16px}
.copy-btn.copied{background:#10b981}
.deploy-notes{margin-top:12px;color:var(--muted);font-size:13px}

@media (max-width:520px){
  .script-code{flex-direction:row;gap:8px;padding:12px}
  .copy-btn{flex:0 0 38px;height:38px;font-size:14px}
}

@media (max-width:520px){
  .modal-panel{width:96%;border-radius:10px}
  .modal-body{padding:14px}
}

/* Testimonials */
.testimonials{padding:60px 0;background:var(--bg)}
.testimonials h2{text-align:center;font-size:2.5rem;font-weight:700;margin-bottom:40px;color:var(--fg)}
.testimonials blockquote{background:var(--card);padding:24px;border-radius:16px;color:var(--muted);margin:16px 0;border-left:4px solid var(--accent);font-style:italic;line-height:1.6;transition:all 0.3s ease;position:relative}
.testimonials blockquote:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,0.1)}
.testimonials blockquote::before{content:'"';position:absolute;top:-10px;left:20px;font-size:3rem;color:var(--accent);opacity:0.3;font-family:serif}

/* FAQ (details/summary) */
.faq-list{display:flex;flex-direction:column;gap:12px;margin-top:12px}
.faq-list details{background:var(--card);padding:18px;border-radius:12px;border:1px solid rgba(107,92,255,0.06);box-shadow:0 6px 18px rgba(0,0,0,0.04)}
.faq-list summary{cursor:pointer;list-style:none;outline:none;font-weight:700;color:var(--fg);font-size:16px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list details[open]{border-color:var(--accent);box-shadow:0 12px 32px rgba(107,92,255,0.08)}
.faq-list details p{margin:12px 0 0;color:var(--muted);line-height:1.6}


/* About */
.about{padding:60px 0;background:linear-gradient(135deg, var(--card) 0%, var(--bg) 100%)}
.about h2{text-align:center;font-size:2.5rem;font-weight:700;margin-bottom:24px;color:var(--fg)}
.about p{font-size:18px;line-height:1.7;color:var(--muted);text-align:center;max-width:800px;margin:0 auto 32px}
.lang-list{text-align:center}
.lang-list span{font-weight:600;color:var(--fg);margin-right:12px}
.lang-list ul{display:inline-flex;gap:16px;margin:0;padding:0;list-style:none}
.lang-list li{padding:6px 12px;background:var(--accent);color:white;border-radius:20px;font-size:14px;font-weight:500}

/* Footer */
.site-footer{border-top:1px solid rgba(0,0,0,0.08);padding:28px 0;margin-top:40px;background:var(--card)}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:20px}
.footer-left{display:flex;flex-direction:column;gap:6px}
.footer-left .beian{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:14px;margin:0}
.footer-left .beian a{color:var(--muted);text-decoration:none}
.beian-inline{display:inline-flex;align-items:center;gap:8px;margin-left:10px;color:var(--muted);font-size:14px}
.beian-inline a{color:var(--muted);text-decoration:none}
.footer-left .beian a:hover{color:var(--accent)}
.footer-icon{width:16px;height:16px;display:inline-block;vertical-align:middle}
.copyright{margin:0;font-weight:600;color:var(--muted)}
.footer-right .foot-links{display:flex;gap:16px}
/* Make footer links visually match surrounding footer text */
.foot-links a{color:var(--muted);text-decoration:none;padding:6px 8px;border-radius:6px;transition:all 0.18s ease;font-size:14px;font-weight:600}
.foot-links a:hover,.foot-links a:focus{color:var(--accent);background:rgba(107,92,255,0.06);outline:none}
.footer-right .foot-links a{color:var(--muted);font-weight:600}

/* up arrow icon in footer link */
.icon-up{display:inline-block;vertical-align:middle;margin-right:8px;fill:currentColor}
.foot-links a .icon-up path{fill:currentColor}

@media (max-width:600px){
  .footer-inner{flex-direction:column;align-items:flex-start;gap:12px}
  .footer-right{width:100%}
  .footer-right .foot-links{justify-content:flex-start}
}

/* Responsive */
@media (max-width:900px){
  .hero{padding:60px 0 40px}
  .hero h1{font-size:2.5rem}
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .screenshot-image{height:280px;transform:scale(1)}
  .screenshot-image:hover{transform:scale(1.02)}
  .features{padding:60px 0}
  .features h2{font-size:2.5rem}
  .feature-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .feature{min-height:180px;padding:24px 20px}
  .feature .icon-container{width:70px;height:70px;margin-bottom:16px}
  .screens-row{flex-direction:column;gap:16px}
  .screen-card{height:200px}
  .nav{display:none}
  .nav-toggle{display:inline-block}
}
@media (max-width:520px){
  .hero h1{font-size:2rem}
  .lead{font-size:18px}
  .features h2{font-size:2rem}
  .feature-grid{grid-template-columns:1fr;gap:20px}
  .feature{min-height:160px;padding:20px 16px}
  .feature .icon-container{width:60px;height:60px;margin-bottom:12px}
  .feature h3{font-size:1.2rem}
  .feature p{font-size:14px}
  .cta-row{flex-direction:column;gap:12px}
  .btn.large{width:100%;text-align:center}
  .lang-list ul{flex-direction:column;gap:8px}
}