:root {
  --bg: #030d07;
  --surface: #071a0e;
  --surface2: #0d2718;
  --border: #1a3d26;
  --green: #4ade80;
  --green-dark: #22c55e;
  --green-glow: rgba(74,222,128,.18);
  --text: #e8f5ee;
  --muted: #7ba892;
  --radius: 12px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:'PingFang SC','Microsoft YaHei',sans-serif;line-height:1.7;font-size:16px}
a{color:inherit;text-decoration:none}
img{max-width:100%}
ul{list-style:none}

/* ── Nav ── */
nav{position:sticky;top:0;z-index:100;background:rgba(3,13,7,.82);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-size:1.25rem;font-weight:700}
.logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--green-dark),var(--green));border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:18px}
.logo em{color:var(--green);font-style:normal}
.nav-links{display:flex;align-items:center;gap:28px;font-size:15px}
.nav-links a{color:var(--muted);transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.menu-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.menu-toggle span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:.3s}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 22px;border-radius:var(--radius);font-size:15px;font-weight:600;cursor:pointer;transition:.2s;border:none;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--green-dark),var(--green));color:#030d07}
.btn-primary:hover{opacity:.88;transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--green);border:1.5px solid var(--green-dark)}
.btn-outline:hover{background:var(--green-glow)}
.btn-lg{padding:14px 36px;font-size:17px;border-radius:14px}
.nav-cta{padding:8px 18px;font-size:14px}

/* ── Container ── */
.container{max-width:1180px;margin:0 auto;padding:0 24px}

/* ── Hero ── */
.hero{position:relative;padding:90px 0 70px;overflow:hidden;text-align:center}
.hero::before{content:'';position:absolute;top:-120px;left:50%;transform:translateX(-50%);width:680px;height:680px;background:radial-gradient(circle,rgba(34,197,94,.13) 0%,transparent 68%);pointer-events:none}
.hero::after{content:'';position:absolute;bottom:-80px;right:10%;width:340px;height:340px;background:radial-gradient(circle,rgba(74,222,128,.07) 0%,transparent 70%);pointer-events:none}
.hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(74,222,128,.1);border:1px solid rgba(74,222,128,.25);color:var(--green);border-radius:999px;padding:5px 14px;font-size:13px;font-weight:600;margin-bottom:20px;letter-spacing:.5px}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);font-weight:800;line-height:1.2;margin-bottom:18px}
.hl{background:linear-gradient(135deg,var(--green-dark),var(--green));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{font-size:1.1rem;color:var(--muted);max-width:580px;margin:0 auto 34px}
.hero-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:50px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;max-width:820px;margin:0 auto}
.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px 16px;text-align:center}
.stat-num{font-size:2rem;font-weight:800;color:var(--green);line-height:1}
.stat-label{font-size:13px;color:var(--muted);margin-top:4px}

/* ── Entry Section (unique) ── */
.entry-section{padding:70px 0;background:var(--surface)}
.section-title{text-align:center;font-size:1.8rem;font-weight:700;margin-bottom:12px}
.section-sub{text-align:center;color:var(--muted);margin-bottom:48px;font-size:15px}
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:900px;margin:0 auto 36px}
.entry-card{background:var(--surface2);border:1.5px solid var(--border);border-radius:16px;padding:28px 24px;text-align:center;transition:border-color .25s,transform .2s}
.entry-card:hover{border-color:var(--green-dark);transform:translateY(-4px)}
.entry-card.featured{border-color:var(--green-dark);box-shadow:0 0 28px var(--green-glow)}
.entry-icon{font-size:2.2rem;margin-bottom:12px}
.entry-card h3{font-size:1.05rem;font-weight:700;margin-bottom:8px}
.entry-card p{font-size:13.5px;color:var(--muted);margin-bottom:18px;line-height:1.6}
.entry-tip{background:rgba(74,222,128,.08);border:1px solid rgba(74,222,128,.18);border-radius:10px;padding:16px 20px;max-width:700px;margin:0 auto;font-size:14px;color:var(--muted);text-align:center}
.entry-tip strong{color:var(--green)}

/* ── Features ── */
.section{padding:72px 0}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px}
.feat-icon{font-size:2rem;margin-bottom:14px}
.feat-card h3{font-size:1.05rem;font-weight:700;margin-bottom:8px}
.feat-card p{font-size:14px;color:var(--muted);line-height:1.7}

/* ── Plans ── */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:900px;margin:0 auto}
.plan-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:32px 28px;transition:transform .2s}
.plan-card.featured{border-color:var(--green-dark);box-shadow:0 0 32px var(--green-glow);transform:scale(1.03)}
.plan-badge{display:inline-block;background:var(--green-dark);color:#030d07;font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;margin-bottom:14px}
.plan-name{font-size:1.2rem;font-weight:700;margin-bottom:4px}
.plan-desc{font-size:13px;color:var(--muted);margin-bottom:18px}
.plan-price{font-size:2.4rem;font-weight:800;color:var(--green);line-height:1;margin-bottom:4px}
.plan-price span{font-size:14px;color:var(--muted);font-weight:400}
.plan-features{margin:18px 0 24px;display:flex;flex-direction:column;gap:9px}
.plan-features li{font-size:14px;color:var(--muted);padding-left:20px;position:relative}
.plan-features li::before{content:'✓';position:absolute;left:0;color:var(--green);font-weight:700}
.plan-features li.cross{color:#4a5568}
.plan-features li.cross::before{content:'✗';color:#4a5568}

/* ── Steps ── */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;max-width:860px;margin:0 auto}
.step{text-align:center}
.step-num{width:48px;height:48px;background:linear-gradient(135deg,var(--green-dark),var(--green));border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:800;color:#030d07;margin:0 auto 14px}
.step h3{font-size:1rem;font-weight:700;margin-bottom:8px}
.step p{font-size:14px;color:var(--muted)}

/* ── Platforms ── */
.platform-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;max-width:800px;margin:0 auto}
.platform-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px 12px;text-align:center;font-size:13px}
.platform-card .p-icon{font-size:1.8rem;margin-bottom:8px}
.platform-card p{color:var(--muted);font-size:12px;margin-top:4px}

/* ── Reviews ── */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.stars{color:#fbbf24;font-size:14px;margin-bottom:10px}
.review-card p{font-size:14px;color:var(--muted);line-height:1.75;margin-bottom:14px}
.reviewer{font-size:13px;font-weight:600;color:var(--green)}

/* ── FAQ ── */
.faq-list{max-width:780px;margin:0 auto;display:flex;flex-direction:column;gap:10px}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;padding:18px 22px;background:none;border:none;color:var(--text);font-size:15px;font-weight:600;cursor:pointer;text-align:left;gap:12px}
.faq-arrow{font-size:18px;color:var(--green);transition:transform .3s;flex-shrink:0}
.faq-item.open .faq-arrow{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease,padding .3s}
.faq-item.open .faq-a{max-height:400px;padding:0 22px 18px}
.faq-a p{font-size:14px;color:var(--muted);line-height:1.8}

/* ── CTA ── */
.cta-section{padding:80px 0;background:linear-gradient(135deg,#071a0e 0%,#0d2718 50%,#071a0e 100%);text-align:center;position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:600px;height:600px;background:radial-gradient(circle,rgba(34,197,94,.12) 0%,transparent 65%);pointer-events:none}
.cta-section h2{font-size:2rem;font-weight:800;margin-bottom:12px;position:relative}
.cta-section p{color:var(--muted);margin-bottom:32px;font-size:1.05rem;position:relative}
.cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative}

/* ── Page hero (inner) ── */
.page-hero{padding:52px 0 40px;background:var(--surface);border-bottom:1px solid var(--border)}
.page-hero h1{font-size:2rem;font-weight:800;margin-bottom:8px}
.page-hero p{color:var(--muted)}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:12px;display:flex;align-items:center;gap:6px}
.breadcrumb a{color:var(--green)}

/* ── Download cards ── */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:48px}
.dl-mobile{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-bottom:56px;max-width:620px;margin-left:auto;margin-right:auto}
.dl-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:30px 24px;text-align:center}
.dl-icon{font-size:2.5rem;margin-bottom:12px}
.dl-card h3{font-size:1.1rem;font-weight:700;margin-bottom:8px}
.dl-card p{font-size:14px;color:var(--muted);margin-bottom:18px;line-height:1.6}
.dl-card .btn{width:100%;margin-bottom:8px}
.dl-ver{font-size:12px;color:var(--muted);margin-top:8px}

/* ── Tutorial ── */
.tut-content{max-width:820px;margin:0 auto}
.tut-sec{margin-bottom:48px}
.tut-sec h2{font-size:1.35rem;font-weight:700;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--border)}
.tut-sec h3{font-size:1.05rem;font-weight:700;margin:20px 0 8px}
.tut-sec p{font-size:14.5px;color:var(--muted);margin-bottom:10px;line-height:1.8}
.tut-sec ul,.tut-sec ol{padding-left:18px;display:flex;flex-direction:column;gap:8px}
.tut-sec ul{list-style:disc}
.tut-sec ol{list-style:decimal}
.tut-sec li{font-size:14.5px;color:var(--muted);line-height:1.7}
.tip-box{background:rgba(74,222,128,.07);border-left:3px solid var(--green-dark);border-radius:0 8px 8px 0;padding:12px 16px;font-size:14px;color:var(--muted);margin:12px 0}

/* ── Footer ── */
footer{background:var(--surface);border-top:1px solid var(--border);padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:36px}
.footer-brand p{font-size:13px;color:var(--muted);margin-top:10px;line-height:1.7}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:12px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:8px}
.footer-col li a{font-size:13px;color:var(--muted);transition:color .2s}
.footer-col li a:hover{color:var(--green)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:24px;border-top:1px solid var(--border);font-size:13px;color:var(--muted)}
.footer-icp a{color:var(--muted);text-decoration:none}
.footer-icp a:hover{color:var(--green)}

/* ── Responsive ── */
@media(max-width:900px){
  .feat-grid{grid-template-columns:1fr 1fr}
  .plan-grid{grid-template-columns:1fr}
  .plan-card.featured{transform:none}
  .entry-grid{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr;gap:24px}
  .review-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .dl-grid{grid-template-columns:1fr}
  .dl-mobile{grid-template-columns:1fr;max-width:400px}
}
@media(max-width:680px){
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .feat-grid{grid-template-columns:1fr}
  .platform-grid{grid-template-columns:repeat(3,1fr)}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:var(--bg);padding:20px 24px 24px;flex-direction:column;align-items:flex-start;gap:18px;border-bottom:1px solid var(--border)}
  .nav-links.open{display:flex}
  .menu-toggle{display:flex}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px;text-align:center}
}
@media(max-width:440px){
  .hero-stats{grid-template-columns:1fr 1fr}
  .platform-grid{grid-template-columns:repeat(2,1fr)}
}