/* ===== Clash Verge Rev Official Site - c3 Style ===== */
/* Light, minimal, modern design inspired by clansverge.app */

:root {
  --primary: #4F46E5;
  --primary-light: #EEF2FF;
  --primary-dark: #3730A3;
  --accent: #06B6D4;
  --accent-light: #ECFEFF;
  --green: #10B981;
  --green-light: #ECFDF5;
  --amber: #F59E0B;
  --amber-light: #FFFBEB;
  --red: #EF4444;
  --red-light: #FEF2F2;
  --surface: #FFFFFF;
  --surface-alt: #F8FAFC;
  --surface-hover: #F1F5F9;
  --border: #E2E8F0;
  --text: #0F172A;
  --text-secondary: #64748B;
  --text-muted: #94A3B8;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -2px rgba(0,0,0,.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.08), 0 4px 6px -4px rgba(0,0,0,.04);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --max-w: 1120px;
  --header-h: 64px;
  --transition: .25s cubic-bezier(.4,0,.2,1);
}

/* Reset */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans SC",sans-serif;color:var(--text);background:var(--surface);line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul,ol{list-style:none}
button{cursor:pointer;border:none;background:none;font:inherit}

/* Utility */
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-alt{background:var(--surface-alt)}
.section-header{text-align:center;margin-bottom:48px}
.section-header h2{font-size:2rem;font-weight:700;margin-bottom:8px}
.section-header p{color:var(--text-secondary);font-size:1.05rem;max-width:560px;margin:0 auto}
.gradient-text{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:var(--radius-sm);font-weight:600;font-size:.95rem;transition:var(--transition)}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 2px 8px rgba(79,70,229,.3)}
.btn-primary:hover{background:var(--primary-dark);box-shadow:0 4px 16px rgba(79,70,229,.4);transform:translateY(-1px)}
.btn-secondary{background:var(--surface);color:var(--text);border:1.5px solid var(--border)}
.btn-secondary:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.btn-sm{padding:8px 18px;font-size:.85rem;border-radius:6px}
.btn-ghost{background:transparent;color:var(--primary);padding:8px 16px}
.btn-ghost:hover{background:var(--primary-light)}

/* Header */
.header{position:fixed;top:0;left:0;right:0;height:var(--header-h);background:rgba(255,255,255,.85);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border);z-index:100;transition:var(--transition)}
.header-inner{max-width:var(--max-w);margin:0 auto;padding:0 24px;height:100%;display:flex;align-items:center;justify-content:space-between}
.header-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.15rem;white-space:nowrap}
.brand-logo{width:32px;height:32px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:14px;font-weight:800}
.header-nav{display:flex;align-items:center;gap:4px}
.header-nav a{padding:8px 14px;border-radius:var(--radius-sm);font-size:.9rem;color:var(--text-secondary);font-weight:500;transition:var(--transition)}
.header-nav a:hover{color:var(--primary);background:var(--primary-light)}
.header-nav a.active{color:var(--primary);background:var(--primary-light);font-weight:600}
.menu-toggle{display:none;flex-direction:column;gap:5px;padding:8px}
.menu-toggle span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:var(--transition)}

/* Hero */
.hero{padding:140px 0 80px;text-align:center;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-40%;left:50%;transform:translateX(-50%);width:800px;height:800px;background:radial-gradient(circle,rgba(79,70,229,.06) 0%,transparent 70%);pointer-events:none}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:100px;background:var(--primary-light);color:var(--primary);font-size:.82rem;font-weight:600;margin-bottom:24px}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--green);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{font-size:3.2rem;font-weight:800;line-height:1.2;margin-bottom:20px;letter-spacing:-.02em}
.hero p{font-size:1.15rem;color:var(--text-secondary);max-width:600px;margin:0 auto 36px;line-height:1.7}
.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* Feature Cards */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:32px 28px;transition:var(--transition)}
.feature-card:hover{border-color:var(--primary);box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.feature-icon{width:48px;height:48px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px}
.feature-icon.tauri{background:var(--primary-light);color:var(--primary)}
.feature-icon.core{background:var(--accent-light);color:var(--accent)}
.feature-icon.ui{background:#FDF4FF;color:#A855F7}
.feature-icon.script{background:var(--amber-light);color:var(--amber)}
.feature-icon.sync{background:var(--green-light);color:var(--green)}
.feature-icon.cross{background:var(--red-light);color:var(--red)}
.feature-card h3{font-size:1.1rem;font-weight:700;margin-bottom:8px}
.feature-card p{color:var(--text-secondary);font-size:.9rem;line-height:1.6}

/* Download Section */
.download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.dl-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:32px 28px;text-align:center;transition:var(--transition)}
.dl-card:hover{border-color:var(--primary);box-shadow:var(--shadow-lg)}
.dl-card .dl-icon{font-size:40px;margin-bottom:16px}
.dl-card h3{font-size:1.15rem;font-weight:700;margin-bottom:4px}
.dl-card .dl-arch{color:var(--text-muted);font-size:.85rem;margin-bottom:20px}
.dl-links{display:flex;flex-direction:column;gap:8px}
.dl-links a{display:block;padding:10px 16px;border-radius:var(--radius-sm);font-size:.88rem;font-weight:600;transition:var(--transition)}
.dl-primary{background:var(--primary);color:#fff}
.dl-primary:hover{background:var(--primary-dark)}
.dl-secondary{background:var(--surface-alt);color:var(--text);border:1px solid var(--border)}
.dl-secondary:hover{border-color:var(--primary);color:var(--primary)}

/* Stats */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:64px}
.stat-item{text-align:center;padding:24px 16px}
.stat-number{font-size:2.2rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.stat-label{color:var(--text-secondary);font-size:.9rem;margin-top:4px}

/* Cards */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:var(--transition)}
.card:hover{box-shadow:var(--shadow-md)}

/* FAQ */
.faq-list{max-width:720px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden;transition:var(--transition)}
.faq-item:hover{border-color:var(--primary)}
.faq-q{display:flex;justify-content:space-between;align-items:center;padding:18px 24px;font-weight:600;cursor:pointer;gap:12px}
.faq-q::after{content:'+';font-size:1.3rem;color:var(--text-muted);transition:var(--transition);flex-shrink:0}
.faq-item.open .faq-q::after{content:'−';color:var(--primary)}
.faq-a{padding:0 24px 18px;color:var(--text-secondary);font-size:.92rem;line-height:1.7;display:none}
.faq-item.open .faq-a{display:block}

/* Guide Steps */
.steps{max-width:720px;margin:0 auto}
.step{display:flex;gap:20px;margin-bottom:32px;align-items:flex-start}
.step-num{flex-shrink:0;width:40px;height:40px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.95rem}
.step h4{font-size:1.05rem;font-weight:700;margin-bottom:6px}
.step p{color:var(--text-secondary);font-size:.92rem;line-height:1.7}

/* Timeline */
.timeline{max-width:680px;margin:0 auto;position:relative;padding-left:32px}
.timeline::before{content:'';position:absolute;left:11px;top:8px;bottom:8px;width:2px;background:var(--border)}
.timeline-item{position:relative;margin-bottom:32px}
.timeline-item::before{content:'';position:absolute;left:-32px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--primary);border:3px solid var(--primary-light);z-index:1}
.timeline-date{font-size:.85rem;color:var(--primary);font-weight:600;margin-bottom:4px}
.timeline-title{font-size:1.05rem;font-weight:700;margin-bottom:4px}
.timeline-desc{color:var(--text-secondary);font-size:.9rem;line-height:1.6}

/* Platform Cards */
.platform-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.platform-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:36px 32px;transition:var(--transition)}
.platform-card:hover{border-color:var(--primary);box-shadow:var(--shadow-lg)}
.platform-card .pf-icon{font-size:36px;margin-bottom:16px}
.platform-card h3{font-size:1.25rem;font-weight:700;margin-bottom:8px}
.platform-card p{color:var(--text-secondary);font-size:.92rem;margin-bottom:20px;line-height:1.6}

/* Compare Table */
.compare-table{width:100%;border-collapse:separate;border-spacing:0;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.compare-table th{background:var(--surface-alt);padding:14px 18px;font-size:.85rem;font-weight:700;color:var(--text-secondary);text-align:left;border-bottom:1px solid var(--border)}
.compare-table td{padding:14px 18px;font-size:.9rem;border-bottom:1px solid var(--border)}
.compare-table tr:last-child td{border-bottom:none}
.compare-table .check{color:var(--green);font-weight:600}
.compare-table .cross{color:var(--red);font-weight:600}

/* Info Box */
.info-box{background:var(--primary-light);border:1px solid rgba(79,70,229,.15);border-radius:var(--radius);padding:20px 24px;color:var(--primary-dark);font-size:.92rem;line-height:1.7}
.info-box.warn{background:var(--amber-light);border-color:rgba(245,158,11,.15);color:#92400E}
.info-box.danger{background:var(--red-light);border-color:rgba(239,68,68,.15);color:#991B1B}

/* Footer */
.footer{background:var(--surface-alt);border-top:1px solid var(--border);padding:64px 0 32px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.footer-brand h3{font-size:1.15rem;font-weight:700;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.footer-brand p{color:var(--text-secondary);font-size:.88rem;line-height:1.6;max-width:280px}
.footer-links h4{font-size:.88rem;font-weight:700;margin-bottom:14px;color:var(--text)}
.footer-links a{display:block;padding:4px 0;font-size:.88rem;color:var(--text-secondary);transition:var(--transition)}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:24px;border-top:1px solid var(--border);font-size:.82rem;color:var(--text-muted)}
.footer-seo{margin-top:24px;padding-top:20px;border-top:1px solid var(--border);font-size:.78rem;color:var(--text-muted);line-height:1.8}

/* Animations */
.animate-in{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
.animate-in.visible{opacity:1;transform:translateY(0)}

/* Tags */
.tag{display:inline-block;padding:4px 10px;border-radius:100px;font-size:.75rem;font-weight:600}
.tag-blue{background:var(--primary-light);color:var(--primary)}
.tag-green{background:var(--green-light);color:var(--green)}
.tag-amber{background:var(--amber-light);color:var(--amber)}
.tag-red{background:var(--red-light);color:var(--red)}
.tag-teal{background:var(--accent-light);color:var(--accent)}

/* Version Badge */
.version-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:100px;background:var(--green-light);color:var(--green);font-size:.8rem;font-weight:600}

/* Responsive */
@media(max-width:900px){
  .feature-grid,.download-grid{grid-template-columns:repeat(2,1fr)}
  .stats-row{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .platform-grid{grid-template-columns:1fr}
  .hero h1{font-size:2.4rem}
}
@media(max-width:640px){
  .feature-grid,.download-grid{grid-template-columns:1fr}
  .stats-row{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero h1{font-size:2rem}
  .hero{padding:120px 0 60px}
  .section{padding:56px 0}
  .header-nav{display:none;position:fixed;top:var(--header-h);left:0;right:0;background:var(--surface);border-bottom:1px solid var(--border);flex-direction:column;padding:12px;box-shadow:var(--shadow-lg)}
  .header-nav.show{display:flex}
  .header-nav a{padding:12px 16px;width:100%;text-align:left}
  .menu-toggle{display:flex}
  .footer-bottom{flex-direction:column;gap:8px;text-align:center}
}