/* ============================================================
   bnb交易所 | 操作简便的全球数字资产交易窗口 - 样式表
   ============================================================ */

/* --- CSS Variables --- */
:root {
  --bg-deep: #0a0f1a;
  --bg-card: #111827;
  --bg-card-hover: #1a2235;
  --bnb-gold: #f0b90b;
  --bnb-gold-dark: #c99a08;
  --easy-blue: #3b82f6;
  --easy-blue-dark: #2563eb;
  --safe-green: #10b981;
  --trade-purple: #8b5cf6;
  --chain-cyan: #06b6d4;
  --text-white: #f1f5f9;
  --text-gray: #94a3b8;
  --text-muted: #64748b;
  --border-color: #1e293b;
  --border-light: #334155;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
  --shadow-gold: 0 4px 20px rgba(240,185,11,0.25);
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  --font-mono: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  --max-width: 1200px;
}

/* --- Reset & Base --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-sans);
  background:var(--bg-deep);
  color:var(--text-white);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:color var(--transition-fast)}
a:hover{color:var(--bnb-gold)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
::selection{background:var(--bnb-gold);color:var(--bg-deep)}
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:var(--bg-deep)}
::-webkit-scrollbar-thumb{background:var(--border-light);border-radius:4px}

/* --- Container --- */
.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}

/* --- Typography --- */
h1,h2,h3,h4{line-height:1.3;font-weight:700}
h1{font-size:clamp(2rem,5vw,3rem)}
h2{font-size:clamp(1.6rem,3.5vw,2.2rem)}
h3{font-size:clamp(1.2rem,2.5vw,1.5rem)}

/* --- Helper Classes --- */
.text-gold{color:var(--bnb-gold)}
.text-blue{color:var(--easy-blue)}
.text-green{color:var(--safe-green)}
.text-purple{color:var(--trade-purple)}
.text-cyan{color:var(--chain-cyan)}
.text-gray{color:var(--text-gray)}
.text-center{text-align:center}
.mt-1{margin-top:0.5rem}
.mt-2{margin-top:1rem}
.mt-4{margin-top:2rem}
.mb-2{margin-bottom:1rem}
.mb-4{margin-bottom:2rem}

/* --- Section Title --- */
.section-title{
  text-align:center;
  margin-bottom:3rem;
}
.section-title h2{
  font-size:clamp(1.8rem,4vw,2.5rem);
  margin-bottom:0.75rem;
}
.section-title h2 span{
  background:linear-gradient(135deg,var(--bnb-gold),var(--easy-blue));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.section-title p{
  color:var(--text-gray);
  font-size:1.1rem;
  max-width:600px;
  margin:0 auto;
}

/* --- Header / Nav --- */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:1000;
  background:rgba(10,15,26,0.85);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border-color);
  transition:all var(--transition-base);
}
.site-header.scrolled{
  background:rgba(10,15,26,0.95);
  box-shadow:var(--shadow-md);
}
.site-header .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:1.35rem;
  font-weight:800;
  color:var(--bnb-gold);
  letter-spacing:-0.5px;
}
.logo-icon{
  width:36px;
  height:36px;
  background:var(--bnb-gold);
  border-radius:var(--radius-sm);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--bg-deep);
  font-weight:900;
  font-size:1.2rem;
}
.main-nav{display:flex;gap:6px}
.main-nav a{
  padding:8px 16px;
  border-radius:var(--radius-sm);
  font-size:0.95rem;
  font-weight:500;
  color:var(--text-gray);
  transition:all var(--transition-fast);
}
.main-nav a:hover,
.main-nav a.active{
  color:var(--bnb-gold);
  background:rgba(240,185,11,0.08);
}
.nav-cta{
  background:linear-gradient(135deg,var(--bnb-gold),var(--bnb-gold-dark))!important;
  color:var(--bg-deep)!important;
  font-weight:700!important;
  padding:8px 20px!important;
  border-radius:var(--radius-sm)!important;
}
.nav-cta:hover{
  opacity:0.9;
  transform:translateY(-1px);
  box-shadow:var(--shadow-gold);
}
.mobile-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  cursor:pointer;
  padding:8px;
}
.mobile-toggle span{
  width:26px;
  height:2.5px;
  background:var(--text-white);
  transition:all var(--transition-fast);
  border-radius:2px;
}
.mobile-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.mobile-toggle.active span:nth-child(2){opacity:0}
.mobile-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* --- Hero --- */
.hero{
  padding:140px 0 100px;
  position:relative;
  overflow:hidden;
  background:radial-gradient(ellipse 80% 60% at 50% 0%,rgba(240,185,11,0.07),transparent),
             radial-gradient(ellipse 50% 50% at 80% 80%,rgba(59,130,246,0.06),transparent),
             radial-gradient(ellipse 50% 50% at 20% 70%,rgba(6,182,212,0.05),transparent);
}
.hero::before{
  content:'';
  position:absolute;
  top:0;left:0;right:0;bottom:0;
  background:url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><defs><linearGradient id="g" x1="0" y1="0" x2="1" y2="0"><stop offset="0%" stop-color="%23f0b90b" stop-opacity="0.04"/><stop offset="50%" stop-color="%233b82f6" stop-opacity="0.04"/><stop offset="100%" stop-color="%238b5cf6" stop-opacity="0.04"/></linearGradient></defs><path fill="url(%23g)" d="M0,160 C360,320 1080,0 1440,160 L1440,320 L0,320 Z"/></svg>') no-repeat bottom;
  background-size:cover;
  pointer-events:none;
}
.hero .container{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:60px;
  align-items:center;
}
.hero-content h1{
  font-size:clamp(2.2rem,5.5vw,3.2rem);
  margin-bottom:1.2rem;
  line-height:1.2;
}
.hero-content h1 .highlight{
  background:linear-gradient(135deg,var(--bnb-gold),var(--easy-blue));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero-content p{
  font-size:1.15rem;
  color:var(--text-gray);
  margin-bottom:2rem;
  max-width:480px;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:2rem;
}
.hero-tags span{
  padding:6px 14px;
  border-radius:20px;
  font-size:0.85rem;
  font-weight:600;
  border:1px solid var(--border-light);
  color:var(--text-gray);
  transition:all var(--transition-fast);
}
.hero-tags span:nth-child(1){border-color:var(--bnb-gold);color:var(--bnb-gold)}
.hero-tags span:nth-child(2){border-color:var(--easy-blue);color:var(--easy-blue)}
.hero-tags span:nth-child(3){border-color:var(--safe-green);color:var(--safe-green)}
.hero-tags span:nth-child(4){border-color:var(--chain-cyan);color:var(--chain-cyan)}
.hero-tags span:nth-child(5){border-color:var(--trade-purple);color:var(--trade-purple)}
.hero-buttons{display:flex;gap:14px;flex-wrap:wrap}
.hero-image{
  position:relative;
  display:flex;
  justify-content:center;
}
.hero-image img{
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg),0 0 60px rgba(240,185,11,0.08);
}
.hero-image::after{
  content:'';
  position:absolute;
  inset:-4px;
  border-radius:calc(var(--radius-lg) + 4px);
  background:linear-gradient(135deg,var(--bnb-gold),var(--easy-blue),var(--trade-purple));
  z-index:-1;
  opacity:0.4;
  filter:blur(30px);
}

/* --- Buttons --- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 28px;
  border-radius:var(--radius-sm);
  font-weight:700;
  font-size:0.95rem;
  cursor:pointer;
  border:none;
  transition:all var(--transition-base);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--bnb-gold),var(--bnb-gold-dark));
  color:var(--bg-deep);
  box-shadow:var(--shadow-gold);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 6px 28px rgba(240,185,11,0.35);
  color:var(--bg-deep);
}
.btn-blue{
  background:linear-gradient(135deg,var(--easy-blue),var(--easy-blue-dark));
  color:#fff;
  box-shadow:0 4px 16px rgba(59,130,246,0.3);
}
.btn-blue:hover{
  transform:translateY(-2px);
  box-shadow:0 6px 24px rgba(59,130,246,0.45);
  color:#fff;
}
.btn-outline{
  background:transparent;
  border:2px solid var(--bnb-gold);
  color:var(--bnb-gold);
}
.btn-outline:hover{
  background:var(--bnb-gold);
  color:var(--bg-deep);
}
.btn-cyan{
  background:linear-gradient(135deg,var(--chain-cyan),#0891b2);
  color:#fff;
}
.btn-cyan:hover{transform:translateY(-2px);color:#fff}
.btn-lg{padding:16px 36px;font-size:1.1rem;border-radius:var(--radius-md)}
.btn-sm{padding:8px 18px;font-size:0.85rem}
.btn-pulse{
  animation:pulse 2s infinite;
}

@keyframes pulse{
  0%,100%{box-shadow:0 4px 16px rgba(240,185,11,0.3)}
  50%{box-shadow:0 4px 32px rgba(240,185,11,0.6)}
}

/* --- 3-Step Easy Process --- */
.easy-process{
  padding:80px 0;
  background:linear-gradient(180deg,var(--bg-deep),var(--bg-card),var(--bg-deep));
}
.process-steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:30px;
  position:relative;
}
.process-steps::before{
  content:'';
  position:absolute;
  top:64px;left:15%;right:15%;
  height:2px;
  background:linear-gradient(90deg,var(--bnb-gold),var(--easy-blue),var(--chain-cyan));
  z-index:0;
}
.process-step{
  text-align:center;
  padding:40px 24px;
  background:var(--bg-card);
  border-radius:var(--radius-lg);
  position:relative;
  z-index:1;
  border:1px solid var(--border-color);
  transition:all var(--transition-slow);
}
.process-step:hover{
  transform:translateY(-8px);
  border-color:var(--bnb-gold);
  box-shadow:var(--shadow-gold);
}
.process-step .step-num{
  width:64px;height:64px;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:1.6rem;font-weight:900;
  margin:0 auto 20px;
  position:relative;
  z-index:2;
}
.process-step:nth-child(1) .step-num{background:rgba(240,185,11,0.15);color:var(--bnb-gold)}
.process-step:nth-child(2) .step-num{background:rgba(59,130,246,0.15);color:var(--easy-blue)}
.process-step:nth-child(3) .step-num{background:rgba(6,182,212,0.15);color:var(--chain-cyan)}
.process-step h3{margin-bottom:10px}
.process-step p{color:var(--text-gray);font-size:0.95rem}
.process-animation{animation:processFlow 2s ease-in-out infinite}

@keyframes processFlow{
  0%,100%{transform:scale(1)}
  50%{transform:scale(1.05)}
}

/* --- Features / Advantages --- */
.features{
  padding:80px 0;
}
.features-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.feature-card{
  background:var(--bg-card);
  border-radius:var(--radius-lg);
  padding:32px 24px;
  border:1px solid var(--border-color);
  transition:all var(--transition-base);
}
.feature-card:hover{
  border-color:var(--bnb-gold);
  box-shadow:var(--shadow-gold);
  transform:translateY(-4px);
}
.feature-icon{
  width:56px;height:56px;
  border-radius:var(--radius-md);
  display:flex;align-items:center;justify-content:center;
  font-size:1.6rem;
  margin-bottom:16px;
}
.feature-card:nth-child(1) .feature-icon{background:rgba(240,185,11,0.12);color:var(--bnb-gold)}
.feature-card:nth-child(2) .feature-icon{background:rgba(59,130,246,0.12);color:var(--easy-blue)}
.feature-card:nth-child(3) .feature-icon{background:rgba(16,185,129,0.12);color:var(--safe-green)}
.feature-card:nth-child(4) .feature-icon{background:rgba(6,182,212,0.12);color:var(--chain-cyan)}
.feature-card:nth-child(5) .feature-icon{background:rgba(139,92,246,0.12);color:var(--trade-purple)}
.feature-card:nth-child(6) .feature-icon{background:rgba(240,185,11,0.12);color:var(--bnb-gold)}
.feature-card h3{margin-bottom:8px;font-size:1.1rem}
.feature-card p{color:var(--text-gray);font-size:0.9rem}

/* --- Stats --- */
.stats{
  padding:60px 0;
  background:var(--bg-card);
  border-top:1px solid var(--border-color);
  border-bottom:1px solid var(--border-color);
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:30px;
  text-align:center;
}
.stat-item h3{
  font-size:2.2rem;
  font-weight:900;
  background:linear-gradient(135deg,var(--bnb-gold),var(--easy-blue));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.stat-item p{color:var(--text-gray);font-size:0.9rem;margin-top:4px}

/* --- Ticker Table --- */
.ticker{
  padding:80px 0;
}
.ticker-table-wrap{
  overflow-x:auto;
  background:var(--bg-card);
  border-radius:var(--radius-lg);
  border:1px solid var(--border-color);
  padding:4px;
}
.ticker-table{
  width:100%;
  border-collapse:collapse;
}
.ticker-table th{
  text-align:left;
  padding:14px 20px;
  font-size:0.85rem;
  color:var(--text-muted);
  text-transform:uppercase;
  letter-spacing:0.5px;
  border-bottom:1px solid var(--border-color);
}
.ticker-table td{
  padding:14px 20px;
  font-size:0.95rem;
  border-bottom:1px solid var(--border-color);
}
.ticker-table tbody tr:hover{background:rgba(240,185,11,0.03)}
.ticker-table .pair-name{font-weight:600;display:flex;align-items:center;gap:8px}
.ticker-table .pair-icon{width:24px;height:24px;border-radius:50%;background:var(--bnb-gold)}
.ticker-table .positive{color:var(--safe-green)}
.ticker-table .negative{color:#ef4444}
.ticker-table .btn-sm{padding:6px 14px;font-size:0.8rem}

/* --- CTA --- */
.cta{
  padding:80px 0;
  position:relative;
  overflow:hidden;
}
.cta-inner{
  background:linear-gradient(135deg,rgba(10,15,26,0.9),rgba(17,24,39,0.95));
  border:1px solid var(--border-light);
  border-radius:var(--radius-xl);
  padding:60px 48px;
  text-align:center;
  position:relative;
  overflow:hidden;
}
.cta-inner::before{
  content:'';
  position:absolute;
  top:-50%;right:-20%;
  width:400px;height:400px;
  background:radial-gradient(circle,rgba(240,185,11,0.08),transparent 70%);
  border-radius:50%;
}
.cta-inner::after{
  content:'';
  position:absolute;
  bottom:-30%;left:-10%;
  width:300px;height:300px;
  background:radial-gradient(circle,rgba(59,130,246,0.08),transparent 70%);
  border-radius:50%;
}
.cta-inner h2{font-size:2rem;margin-bottom:1rem;position:relative;z-index:1}
.cta-inner p{color:var(--text-gray);margin-bottom:2rem;position:relative;z-index:1}
.cta-inner .btn{position:relative;z-index:1}

/* --- About Page --- */
.about-hero{
  padding:160px 0 80px;
  background:radial-gradient(ellipse 60% 50% at 50% 0%,rgba(240,185,11,0.05),transparent);
}
.about-content{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:50px;
  align-items:center;
  padding:40px 0;
}
.about-text h2{margin-bottom:16px}
.about-text p{color:var(--text-gray);margin-bottom:14px}
.about-img img{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}
.timeline{padding:60px 0}
.timeline-list{position:relative;padding-left:30px}
.timeline-list::before{
  content:'';
  position:absolute;
  left:8px;top:0;bottom:0;
  width:2px;
  background:linear-gradient(180deg,var(--bnb-gold),var(--easy-blue),var(--chain-cyan));
}
.timeline-item{margin-bottom:28px;padding-left:30px;position:relative}
.timeline-item::before{
  content:'';
  position:absolute;
  left:-26px;top:6px;
  width:14px;height:14px;
  border-radius:50%;
  background:var(--bnb-gold);
  border:3px solid var(--bg-deep);
}
.timeline-item .year{font-weight:800;color:var(--bnb-gold);font-size:1.1rem}
.timeline-item h3{margin:4px 0}
.timeline-item p{color:var(--text-gray);font-size:0.9rem}

/* --- Services Page --- */
.services-hero{
  padding:160px 0 60px;
  text-align:center;
  background:radial-gradient(ellipse 60% 50% at 50% 0%,rgba(59,130,246,0.05),transparent);
}
.services-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  padding:40px 0 80px;
}
.service-card{
  background:var(--bg-card);
  border-radius:var(--radius-lg);
  padding:36px 28px;
  border:1px solid var(--border-color);
  transition:all var(--transition-base);
}
.service-card:hover{
  border-color:var(--easy-blue);
  box-shadow:0 4px 24px rgba(59,130,246,0.2);
  transform:translateY(-6px);
}
.service-card .service-icon{
  width:60px;height:60px;
  border-radius:var(--radius-md);
  display:flex;align-items:center;justify-content:center;
  font-size:1.6rem;
  margin-bottom:20px;
}
.service-card:nth-child(1) .service-icon{background:rgba(240,185,11,0.12);color:var(--bnb-gold)}
.service-card:nth-child(2) .service-icon{background:rgba(59,130,246,0.12);color:var(--easy-blue)}
.service-card:nth-child(3) .service-icon{background:rgba(6,182,212,0.12);color:var(--chain-cyan)}
.service-card:nth-child(4) .service-icon{background:rgba(139,92,246,0.12);color:var(--trade-purple)}
.service-card:nth-child(5) .service-icon{background:rgba(16,185,129,0.12);color:var(--safe-green)}
.service-card:nth-child(6) .service-icon{background:rgba(240,185,11,0.12);color:var(--bnb-gold)}
.service-card h3{margin-bottom:10px}
.service-card p{color:var(--text-gray);font-size:0.9rem;margin-bottom:20px}
.service-card .btn-sm{display:inline-flex}

/* --- FAQ Page --- */
.faq-hero{
  padding:160px 0 60px;
  text-align:center;
  background:radial-gradient(ellipse 60% 50% at 50% 0%,rgba(139,92,246,0.05),transparent);
}
.faq-list{padding:20px 0 80px;max-width:900px;margin:0 auto}
.faq-list details{
  background:var(--bg-card);
  border-radius:var(--radius-md);
  margin-bottom:14px;
  border:1px solid var(--border-color);
  transition:all var(--transition-fast);
}
.faq-list details:hover{border-color:var(--bnb-gold)}
.faq-list details[open]{
  border-color:var(--bnb-gold);
  box-shadow:var(--shadow-gold);
}
.faq-list summary{
  padding:18px 24px;
  cursor:pointer;
  font-weight:700;
  font-size:1.05rem;
  list-style:none;
  display:flex;
  justify-content:space-between;
  align-items:center;
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{
  content:'+';
  font-size:1.4rem;
  color:var(--bnb-gold);
  font-weight:400;
  transition:transform var(--transition-fast);
}
.faq-list details[open] summary::after{
  content:'-';
  transform:rotate(180deg);
}
.faq-list .faq-answer{
  padding:0 24px 20px;
  color:var(--text-gray);
  line-height:1.8;
}

/* --- Contact Page --- */
.contact-hero{
  padding:160px 0 60px;
  text-align:center;
  background:radial-gradient(ellipse 60% 50% at 50% 0%,rgba(16,185,129,0.05),transparent);
}
.contact-wrap{
  display:grid;
  grid-template-columns:3fr 2fr;
  gap:40px;
  padding:20px 0 80px;
}
.contact-form-wrap{
  background:var(--bg-card);
  border-radius:var(--radius-lg);
  padding:36px;
  border:1px solid var(--border-color);
}
.form-group{margin-bottom:18px}
.form-group label{
  display:block;
  margin-bottom:6px;
  font-weight:600;
  font-size:0.9rem;
  color:var(--text-gray);
}
.form-group input,
.form-group select,
.form-group textarea{
  width:100%;
  padding:12px 16px;
  background:var(--bg-deep);
  border:1px solid var(--border-light);
  border-radius:var(--radius-sm);
  outline:none;
  transition:all var(--transition-fast);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus{
  border-color:var(--bnb-gold);
  box-shadow:0 0 0 3px rgba(240,185,11,0.1);
}
.form-group textarea{resize:vertical;min-height:120px}
.contact-info-side{
  display:flex;
  flex-direction:column;
  gap:20px;
}
.contact-info-card{
  background:var(--bg-card);
  border-radius:var(--radius-lg);
  padding:24px;
  border:1px solid var(--border-color);
}
.contact-info-card h3{
  font-size:1.1rem;
  margin-bottom:12px;
  display:flex;
  align-items:center;
  gap:8px;
}
.contact-info-card p{color:var(--text-gray);font-size:0.9rem}
.social-links{display:flex;gap:12px;margin-top:8px}
.social-links a{
  width:40px;height:40px;
  border-radius:50%;
  background:var(--bg-deep);
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--border-light);
  transition:all var(--transition-fast);
}
.social-links a:hover{border-color:var(--bnb-gold);color:var(--bnb-gold)}

/* --- Footer --- */
.site-footer{
  background:var(--bg-card);
  border-top:1px solid var(--border-color);
  padding:50px 0 30px;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:40px;
  margin-bottom:30px;
}
.footer-col h3{
  font-size:1.05rem;
  margin-bottom:16px;
  color:var(--bnb-gold);
}
.footer-col p{color:var(--text-gray);font-size:0.9rem;margin-bottom:6px}
.footer-col a{display:block;color:var(--text-gray);font-size:0.9rem;padding:4px 0}
.footer-col a:hover{color:var(--bnb-gold)}
.footer-bottom{
  text-align:center;
  padding-top:24px;
  border-top:1px solid var(--border-color);
  color:var(--text-muted);
  font-size:0.85rem;
}

/* --- Animations --- */
@keyframes fadeInUp{
  from{opacity:0;transform:translateY(30px)}
  to{opacity:1;transform:translateY(0)}
}
@keyframes fadeInLeft{
  from{opacity:0;transform:translateX(-30px)}
  to{opacity:1;transform:translateX(0)}
}
@keyframes fadeInRight{
  from{opacity:0;transform:translateX(30px)}
  to{opacity:1;transform:translateX(0)}
}
@keyframes float{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-10px)}
}
@keyframes chainFlow{
  0%{background-position:0% 50%}
  50%{background-position:100% 50%}
  100%{background-position:0% 50%}
}
.animate-reveal{animation:fadeInUp 0.7s ease both}
.animate-reveal-delay-1{animation-delay:0.15s}
.animate-reveal-delay-2{animation-delay:0.3s}
.animate-reveal-delay-3{animation-delay:0.45s}
.animate-float{animation:float 4s ease-in-out infinite}

.hidden-reveal{
  opacity:0;
  transform:translateY(30px);
  transition:all 0.6s ease;
}
.hidden-reveal.revealed{
  opacity:1;
  transform:translateY(0);
}

/* --- Chain Data Flow Effect --- */
.chain-bg{
  background:linear-gradient(90deg,transparent,rgba(6,182,212,0.04),transparent);
  background-size:200% 100%;
  animation:chainFlow 3s ease infinite;
}

/* --- Responsive --- */
@media(max-width:1024px){
  .hero .container{grid-template-columns:1fr;text-align:center}
  .hero-content p{margin:0 auto 2rem}
  .hero-tags{justify-content:center}
  .hero-buttons{justify-content:center}
  .hero-image{order:-1}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .process-steps{grid-template-columns:1fr;gap:20px}
  .process-steps::before{display:none}
  .services-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .about-content{grid-template-columns:1fr}
  .contact-wrap{grid-template-columns:1fr}
}
@media(max-width:768px){
  .main-nav{display:none;position:absolute;top:72px;left:0;right:0;background:var(--bg-card);flex-direction:column;padding:16px;border-bottom:1px solid var(--border-color)}
  .main-nav.mobile-open{display:flex}
  .mobile-toggle{display:flex}
  .features-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .services-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero{padding:120px 0 60px}
  .cta-inner{padding:40px 24px}
  .contact-form-wrap{padding:24px}
}