/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:#0c0f1a;color:#e2e8f0;line-height:1.7;overflow-x:hidden}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ===== Colors ===== */
:root{
  --bg-dark:#0c0f1a;
  --bg-card:#141827;
  --bg-card-hover:#1a1f35;
  --gold:#f59e0b;
  --gold-light:#fbbf24;
  --green:#10b981;
  --green-light:#34d399;
  --blue:#3b82f6;
  --blue-light:#60a5fa;
  --purple:#8b5cf6;
  --purple-light:#a78bfa;
  --white:#ffffff;
  --gray-300:#d1d5db;
  --gray-400:#9ca3af;
  --gray-500:#6b7280;
  --gray-600:#4b5563;
  --gray-700:#374151;
  --border:rgba(255,255,255,0.06);
}

/* ===== Header & Navigation ===== */
header{position:sticky;top:0;z-index:1000;background:rgba(12,15,26,0.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
header .container{display:flex;align-items:center;justify-content:space-between;padding-top:14px;padding-bottom:14px}
.logo{font-size:1.35rem;font-weight:800;color:var(--gold);letter-spacing:1px}
.logo span{color:var(--green)}
nav{display:flex;gap:28px}
nav a{font-size:0.95rem;color:var(--gray-300);transition:color 0.3s;position:relative}
nav a:hover,nav a.active{color:var(--gold)}
nav a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--gold);transition:width 0.3s}
nav a:hover::after,nav a.active::after{width:100%}
.menu-toggle{display:none;background:none;border:none;color:var(--white);font-size:1.5rem;cursor:pointer}

/* ===== Footer ===== */
footer{background:var(--bg-card);border-top:1px solid var(--border);padding:40px 0;text-align:center;color:var(--gray-500);font-size:0.85rem}
footer a{color:var(--gray-400);transition:color 0.3s}
footer a:hover{color:var(--gold)}
.footer-links{display:flex;justify-content:center;gap:24px;margin-bottom:16px;flex-wrap:wrap}

/* ===== Hero ===== */
.hero{position:relative;padding:100px 0 80px;background:linear-gradient(135deg,var(--bg-dark) 0%,#1a1040 50%,var(--bg-dark) 100%);overflow:hidden;text-align:center}
.hero::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(ellipse at center,rgba(245,158,11,0.08) 0%,transparent 70%);animation:heroGlow 8s ease-in-out infinite}
@keyframes heroGlow{0%,100%{transform:translate(0,0)}50%{transform:translate(10%,-5%)}}
.hero .container{position:relative;z-index:1}
.hero h1{font-size:2.8rem;font-weight:900;line-height:1.3;margin-bottom:20px;background:linear-gradient(135deg,var(--gold) 0%,var(--gold-light) 50%,var(--green) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:fadeInUp 0.8s ease-out}
.hero p{font-size:1.15rem;color:var(--gray-400);max-width:700px;margin:0 auto 36px;animation:fadeInUp 0.8s ease-out 0.2s both}
.hero-badges{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin-bottom:36px;animation:fadeInUp 0.8s ease-out 0.3s both}
.hero-badges span{background:var(--bg-card);border:1px solid var(--border);border-radius:50px;padding:8px 20px;font-size:0.9rem;color:var(--gray-300);display:flex;align-items:center;gap:8px}
.hero-badges .badge-green{border-color:rgba(16,185,129,0.3);color:var(--green)}
.hero-badges .badge-gold{border-color:rgba(245,158,11,0.3);color:var(--gold)}
.hero-badges .badge-blue{border-color:rgba(59,130,246,0.3);color:var(--blue)}
.hero-badges .badge-purple{border-color:rgba(139,92,246,0.3);color:var(--purple)}
.hero-buttons{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;animation:fadeInUp 0.8s ease-out 0.4s both}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:8px;font-size:1rem;font-weight:700;cursor:pointer;transition:all 0.3s;border:none;text-align:center}
.btn-gold{background:linear-gradient(135deg,var(--gold),var(--gold-light));color:#000;box-shadow:0 4px 20px rgba(245,158,11,0.3)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 6px 28px rgba(245,158,11,0.45)}
.btn-green{background:linear-gradient(135deg,var(--green),var(--green-light));color:#000;box-shadow:0 4px 20px rgba(16,185,129,0.3)}
.btn-green:hover{transform:translateY(-2px);box-shadow:0 6px 28px rgba(16,185,129,0.45)}
.btn-blue{background:linear-gradient(135deg,var(--blue),var(--blue-light));color:#fff;box-shadow:0 4px 20px rgba(59,130,246,0.3)}
.btn-blue:hover{transform:translateY(-2px);box-shadow:0 6px 28px rgba(59,130,246,0.45)}
.btn-purple{background:linear-gradient(135deg,var(--purple),var(--purple-light));color:#fff;box-shadow:0 4px 20px rgba(139,92,246,0.3)}
.btn-purple:hover{transform:translateY(-2px);box-shadow:0 6px 28px rgba(139,92,246,0.45)}
.btn-outline{background:transparent;border:2px solid var(--gold);color:var(--gold)}
.btn-outline:hover{background:rgba(245,158,11,0.1)}

/* CTA Pulse */
.cta-pulse{animation:ctaPulse 2s ease-in-out infinite}
@keyframes ctaPulse{0%,100%{box-shadow:0 4px 20px rgba(16,185,129,0.3)}50%{box-shadow:0 4px 40px rgba(16,185,129,0.6),0 0 60px rgba(16,185,129,0.2)}}

/* ===== Section Common ===== */
section{padding:80px 0}
.section-title{text-align:center;margin-bottom:56px}
.section-title h2{font-size:2rem;font-weight:800;color:var(--white);margin-bottom:12px}
.section-title h2 span{color:var(--gold)}
.section-title p{color:var(--gray-400);font-size:1.05rem;max-width:600px;margin:0 auto}

/* ===== Ranking Table ===== */
.ranking-table-wrapper{overflow-x:auto;border-radius:12px;border:1px solid var(--border);background:var(--bg-card)}
.ranking-table{width:100%;border-collapse:collapse;min-width:900px}
.ranking-table th{background:rgba(245,158,11,0.08);color:var(--gold);font-weight:700;padding:16px 14px;text-align:center;font-size:0.9rem;white-space:nowrap}
.ranking-table td{padding:14px;text-align:center;border-bottom:1px solid var(--border);font-size:0.9rem}
.ranking-table tbody tr{transition:background 0.3s}
.ranking-table tbody tr:hover{background:var(--bg-card-hover)}
.ranking-table .rank{font-weight:900;font-size:1.1rem}
.ranking-table .rank-1{color:var(--gold)}
.ranking-table .rank-2{color:var(--gray-400)}
.ranking-table .rank-3{color:#cd7f32}
.ranking-table .fee-low{color:var(--green);font-weight:700}
.ranking-table .maker-rebate{color:var(--blue);font-weight:700}
.ranking-table .score{display:inline-flex;align-items:center;gap:4px;color:var(--gold)}
.ranking-table .tag{display:inline-block;padding:2px 10px;border-radius:20px;font-size:0.78rem;font-weight:600}
.tag-green{background:rgba(16,185,129,0.15);color:var(--green)}
.tag-purple{background:rgba(139,92,246,0.15);color:var(--purple)}
.tag-blue{background:rgba(59,130,246,0.15);color:var(--blue)}
.tag-gold{background:rgba(245,158,11,0.15);color:var(--gold)}

/* Fee tag animation */
.fee-tag{display:inline-block;padding:3px 12px;border-radius:20px;font-size:0.85rem;font-weight:700;animation:feePulse 3s ease-in-out infinite}
@keyframes feePulse{0%,100%{transform:scale(1)}50%{transform:scale(1.05)}}

/* ===== Advantages Grid ===== */
.advantages-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.advantage-card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:32px 24px;text-align:center;transition:all 0.3s;position:relative;overflow:hidden}
.advantage-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;transition:height 0.3s}
.advantage-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(0,0,0,0.3)}
.advantage-card:hover::before{height:6px}
.advantage-card:nth-child(1)::before{background:var(--green)}
.advantage-card:nth-child(2)::before{background:var(--blue)}
.advantage-card:nth-child(3)::before{background:var(--purple)}
.advantage-card:nth-child(4)::before{background:var(--gold)}
.advantage-card:nth-child(5)::before{background:var(--gold)}
.advantage-card:nth-child(6)::before{background:var(--green)}
.advantage-card .adv-icon{font-size:2.5rem;margin-bottom:16px}
.advantage-card h3{font-size:1.2rem;color:var(--white);margin-bottom:10px}
.advantage-card p{color:var(--gray-400);font-size:0.9rem;line-height:1.6}

/* ===== Fee Activation Section ===== */
.fee-activation{background:linear-gradient(135deg,var(--bg-card) 0%,#0f2a1f 100%);border:1px solid rgba(16,185,129,0.2);border-radius:16px;padding:48px 32px;text-align:center}
.fee-activation h2{color:var(--green);margin-bottom:12px}
.fee-activation ol{display:inline-block;text-align:left;color:var(--gray-300);margin:24px 0}
.fee-activation ol li{margin-bottom:12px;padding-left:8px}
.fee-activation ol li strong{color:var(--gold)}

/* ===== Content Section (About/Services) ===== */
.content-section{max-width:900px;margin:0 auto}
.content-section h2{font-size:1.6rem;color:var(--gold);margin-bottom:20px;border-left:4px solid var(--gold);padding-left:16px}
.content-section h3{font-size:1.2rem;color:var(--white);margin:28px 0 12px}
.content-section p,.content-section li{color:var(--gray-300);margin-bottom:12px;line-height:1.8}
.content-section ul{padding-left:24px;margin-bottom:20px}
.content-section ul li{list-style:disc;margin-bottom:8px}

/* Service Cards */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px}
.service-card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:32px 24px;text-align:center;transition:all 0.3s}
.service-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(0,0,0,0.3);border-color:var(--gold)}
.service-card .svc-icon{font-size:3rem;margin-bottom:16px}
.service-card h3{font-size:1.2rem;color:var(--white);margin-bottom:10px}
.service-card p{color:var(--gray-400);font-size:0.9rem}
.service-card .svc-btn{margin-top:20px}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-list details{border:1px solid var(--border);border-radius:10px;margin-bottom:12px;background:var(--bg-card);transition:all 0.3s}
.faq-list details[open]{border-color:var(--gold);box-shadow:0 4px 20px rgba(245,158,11,0.1)}
.faq-list summary{padding:18px 24px;font-weight:700;color:var(--white);cursor:pointer;font-size:1.05rem;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-list summary::after{content:'+';font-size:1.4rem;color:var(--gold);transition:transform 0.3s}
.faq-list details[open] summary::after{content:'−';transform:rotate(180deg)}
.faq-list .faq-answer{padding:0 24px 20px;color:var(--gray-300);line-height:1.8}

/* ===== Contact ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;max-width:1000px;margin:0 auto}
.contact-form{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:32px}
.contact-form h3{color:var(--gold);margin-bottom:24px;font-size:1.3rem}
.form-group{margin-bottom:20px}
.form-group label{display:block;color:var(--gray-300);margin-bottom:6px;font-size:0.9rem}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 16px;background:var(--bg-dark);border:1px solid var(--border);border-radius:8px;color:var(--white);font-size:0.95rem;transition:border-color 0.3s}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--gold)}
.form-group textarea{min-height:120px;resize:vertical}
.contact-info{display:flex;flex-direction:column;gap:24px}
.contact-info .info-card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:24px;transition:all 0.3s}
.contact-info .info-card:hover{border-color:var(--gold);transform:translateY(-2px)}
.contact-info .info-card h4{color:var(--gold);font-size:1.05rem;margin-bottom:8px}
.contact-info .info-card p{color:var(--gray-400)}

/* ===== Scroll Reveal ===== */
.reveal{opacity:0;transform:translateY(30px);transition:all 0.6s ease-out}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ===== Page Hero (subpages) ===== */
.page-hero{padding:60px 0;text-align:center;background:var(--bg-card);border-bottom:1px solid var(--border)}
.page-hero h1{font-size:2.2rem;font-weight:900;color:var(--gold);margin-bottom:10px}
.page-hero p{color:var(--gray-400);font-size:1.05rem}

/* ===== CTA Section ===== */
.cta-section{padding:80px 0;text-align:center;background:linear-gradient(135deg,var(--bg-dark) 0%,#0f1a2a 100%)}
.cta-section h2{font-size:2rem;color:var(--white);margin-bottom:12px}
.cta-section p{color:var(--gray-400);margin-bottom:32px;font-size:1.05rem}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .advantages-grid,.service-grid{grid-template-columns:repeat(2,1fr)}
  .hero h1{font-size:2.2rem}
}
@media(max-width:768px){
  .advantages-grid,.service-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .menu-toggle{display:block}
  nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg-dark);flex-direction:column;padding:20px;gap:16px;border-bottom:1px solid var(--border)}
  nav.open{display:flex}
  .hero h1{font-size:1.7rem}
  .hero{padding:60px 0 50px}
  section{padding:50px 0}
  .ranking-table-wrapper{border-radius:8px}
  .hero-badges{gap:10px}
  .hero-badges span{padding:6px 14px;font-size:0.8rem}
}

/* ===== Ranking scroll animation ===== */
.ranking-table-wrapper{animation:slideIn 0.8s ease-out}
@keyframes slideIn{from{opacity:0;transform:translateX(-20px)}to{opacity:1;transform:translateX(0)}}

/* ===== Animations ===== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(40px)}to{opacity:1;transform:translateY(0)}}

/* ===== Breadcrumb ===== */
.breadcrumb{padding:16px 0;color:var(--gray-500);font-size:0.85rem}
.breadcrumb a{color:var(--gray-400)}
.breadcrumb a:hover{color:var(--gold)}
.breadcrumb span{color:var(--gray-500)}

/* ===== Sitemap link ===== */
.sitemap-link{color:var(--gray-500);font-size:0.8rem;margin-top:8px}
.sitemap-link a{color:var(--gray-400)}