*{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#00e5a0;--primary-dark:#00c48a;--bg:#0a0e17;--bg2:#111827;--card:#1a2236;
  --text:#e2e8f0;--text2:#94a3b8;--border:#2a3550;--accent:#ff6b35;
  --radius:12px;--shadow:0 8px 32px rgba(0,0,0,.3)
}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden}
a{color:var(--primary);text-decoration:none;transition:.3s}
a:hover{color:var(--primary-dark)}
img{max-width:100%;display:block}

/* ===== HEADER ===== */
.header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(10,14,23,.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
.header-inner{max-width:1200px;margin:0 auto;padding:0 20px;height:64px;display:flex;align-items:center;justify-content:space-between}
.logo{font-size:1.3rem;font-weight:800;color:var(--primary);letter-spacing:1px}
.logo span{color:var(--accent)}
.nav{display:flex;gap:24px}
.nav a{color:var(--text2);font-size:.9rem;font-weight:500}
.nav a:hover{color:var(--primary)}
.btn-download{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#000;padding:10px 24px;border-radius:8px;font-weight:700;font-size:.9rem;border:none;cursor:pointer;transition:.3s;display:inline-block}
.btn-download:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,229,160,.3)}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none}
.hamburger span{width:24px;height:2px;background:var(--text);transition:.3s}

/* ===== HERO ===== */
.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:100px 20px 60px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 30% 50%,rgba(0,229,160,.08) 0%,transparent 50%),radial-gradient(circle at 70% 50%,rgba(255,107,53,.06) 0%,transparent 50%);animation:pulse 8s ease-in-out infinite}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.1)}}
.hero-content{position:relative;z-index:1;max-width:800px}
.hero-badge{display:inline-block;background:rgba(0,229,160,.1);border:1px solid rgba(0,229,160,.3);color:var(--primary);padding:6px 16px;border-radius:20px;font-size:.8rem;font-weight:600;margin-bottom:24px}
.hero h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:900;line-height:1.2;margin-bottom:20px;background:linear-gradient(135deg,#fff,var(--primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:clamp(1rem,2.5vw,1.2rem);color:var(--text2);margin-bottom:40px;max-width:600px;margin-left:auto;margin-right:auto}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#000;padding:14px 36px;border-radius:10px;font-weight:800;font-size:1rem;border:none;cursor:pointer;transition:.3s;display:inline-block}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(0,229,160,.35)}
.btn-secondary{background:transparent;color:var(--text);padding:14px 36px;border-radius:10px;font-weight:700;font-size:1rem;border:2px solid var(--border);cursor:pointer;transition:.3s;display:inline-block}
.btn-secondary:hover{border-color:var(--primary);color:var(--primary)}
.hero-stats{display:flex;gap:40px;justify-content:center;margin-top:50px;flex-wrap:wrap}
.stat{text-align:center}
.stat-num{font-size:2rem;font-weight:900;color:var(--primary)}
.stat-label{font-size:.85rem;color:var(--text2);margin-top:4px}

/* ===== SECTION COMMON ===== */
.section{padding:80px 20px;max-width:1200px;margin:0 auto}
.section-header{text-align:center;margin-bottom:50px}
.section-header h2{font-size:clamp(1.5rem,3.5vw,2.2rem);font-weight:800;margin-bottom:12px}
.section-header p{color:var(--text2);max-width:600px;margin:0 auto;font-size:1rem}
.section-divider{width:60px;height:4px;background:linear-gradient(90deg,var(--primary),var(--accent));margin:16px auto 0;border-radius:2px}

/* ===== FEATURES ===== */
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.feature-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;transition:.3s;position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:0;transition:.3s}
.feature-card:hover{transform:translateY(-4px);border-color:rgba(0,229,160,.3);box-shadow:var(--shadow)}
.feature-card:hover::before{opacity:1}
.feature-icon{width:56px;height:56px;background:rgba(0,229,160,.1);border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:20px}
.feature-card h3{font-size:1.15rem;font-weight:700;margin-bottom:10px}
.feature-card p{color:var(--text2);font-size:.95rem}

/* ===== MAIN IMAGE ===== */
.showcase{background:var(--bg2);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);margin:0 auto}
.showcase-img{width:100%;height:400px;background:linear-gradient(135deg,#0f172a,#1e293b);display:flex;align-items:center;justify-content:center;position:relative}
.showcase-img::after{content:'';color:var(--text2);font-size:1.2rem;font-weight:600}
/* 替换图片：将背景改为 url('你的图片链接') */
.showcase-info{padding:40px;text-align:center}
.showcase-info h3{font-size:1.5rem;font-weight:800;margin-bottom:12px}
.showcase-info p{color:var(--text2);max-width:500px;margin:0 auto 24px}

/* ===== DOWNLOAD CTA ===== */
.cta-section{background:linear-gradient(135deg,rgba(0,229,160,.08),rgba(255,107,53,.06));border:1px solid rgba(0,229,160,.2);border-radius:var(--radius);padding:60px 20px;text-align:center;margin:0 auto}
.cta-section h2{font-size:clamp(1.5rem,3vw,2rem);font-weight:800;margin-bottom:12px}
.cta-section p{color:var(--text2);margin-bottom:32px;max-width:500px;margin-left:auto;margin-right:auto}

/* ===== TUTORIAL ===== */
.tutorial-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.tutorial-step{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;position:relative}
.step-num{position:absolute;top:-12px;left:24px;background:var(--primary);color:#000;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:.9rem}
.tutorial-step h4{font-size:1.1rem;font-weight:700;margin:12px 0 8px}
.tutorial-step p{color:var(--text2);font-size:.9rem}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:16px;overflow:hidden}
.faq-q{padding:20px 24px;font-weight:700;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-size:1rem}
.faq-q::after{content:'+';font-size:1.3rem;color:var(--primary);transition:.3s}
.faq-item.active .faq-q::after{content:'?';transform:rotate(180deg)}
.faq-a{padding:0 24px 20px;color:var(--text2);font-size:.95rem;display:none}
.faq-item.active .faq-a{display:block}

/* ===== PARAMS TABLE ===== */
.params-table{width:100%;border-collapse:collapse;background:var(--card);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border)}
.params-table th{background:rgba(0,229,160,.1);padding:14px 20px;text-align:left;font-weight:700;font-size:.9rem;color:var(--primary)}
.params-table td{padding:14px 20px;border-top:1px solid var(--border);color:var(--text2);font-size:.9rem}
.params-table tr:hover td{background:rgba(255,255,255,.02)}

/* ===== FOOTER ===== */
.footer{background:var(--bg2);border-top:1px solid var(--border);padding:40px 20px;text-align:center}
.footer-inner{max-width:1200px;margin:0 auto}
.footer p{color:var(--text2);font-size:.85rem;margin-bottom:8px}
.footer-links{display:flex;gap:20px;justify-content:center;margin-bottom:16px;flex-wrap:wrap}
.footer-links a{color:var(--text2);font-size:.85rem}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{margin-top:20px;padding-top:20px;border-top:1px solid var(--border);color:var(--text2);font-size:.8rem}

/* ===== RESPONSIVE ===== */
@media(max-width:768px){
  .nav{display:none}
  .hamburger{display:flex}
  .nav.open{display:flex;flex-direction:column;position:absolute;top:64px;left:0;right:0;background:rgba(10,14,23,.98);padding:20px;gap:16px;border-bottom:1px solid var(--border)}
  .hero-stats{gap:24px}
  .section{padding:50px 16px}
  .showcase-img{height:240px}
  .showcase-info{padding:24px}
  .params-table{font-size:.85rem}
  .params-table th,.params-table td{padding:10px 14px}
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:var(--primary-dark)}