*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0d0d14;--bg2:#161622;--bg3:#1e1e2e;
  --primary:#e84393;--primary2:#a855f7;--accent:#ff6b35;
  --text:#e8e8f0;--text2:#9898b0;--border:#2a2a3e;
  --radius:12px;--shadow:0 4px 24px rgba(0,0,0,.4);
  --max:1200px;--header-h:64px;
}
html{scroll-behavior:smooth;font-size:16px}
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;min-height:100vh}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent)}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius)}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(13,13,20,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);height:var(--header-h)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-size:1.25rem;font-weight:700;color:var(--text)}
.logo img{width:36px;height:36px;border-radius:8px}
.nav-desktop{display:flex;gap:28px;list-style:none}
.nav-desktop a{color:var(--text2);font-size:.95rem;font-weight:500}
.nav-desktop a:hover,.nav-desktop a.active{color:var(--primary)}
.nav-toggle{display:none;background:none;border:none;color:var(--text);font-size:1.5rem;cursor:pointer;padding:4px}
.btn-download{display:inline-flex;align-items:center;gap:6px;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;padding:8px 20px;border-radius:24px;font-size:.9rem;font-weight:600;white-space:nowrap}
.btn-download:hover{color:#fff;opacity:.9}

/* Mobile Nav */
.nav-mobile{display:none;position:fixed;top:var(--header-h);left:0;right:0;background:var(--bg2);border-bottom:1px solid var(--border);padding:16px 20px;z-index:99;flex-direction:column;gap:12px}
.nav-mobile.open{display:flex}
.nav-mobile a{color:var(--text2);padding:8px 0;font-size:1rem;border-bottom:1px solid var(--border)}
.nav-mobile a:last-child{border:none}

/* Hero */
.hero{padding:60px 0 40px;background:linear-gradient(180deg,rgba(168,85,247,.08) 0%,transparent 60%)}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.hero-text h1{font-size:2.2rem;line-height:1.3;margin-bottom:16px;background:linear-gradient(135deg,#fff,var(--primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-text p{color:var(--text2);font-size:1.05rem;margin-bottom:24px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;padding:12px 28px;border-radius:28px;font-weight:600;font-size:1rem;display:inline-flex;align-items:center;gap:8px}
.btn-primary:hover{color:#fff;opacity:.9}
.btn-outline{border:2px solid var(--primary);color:var(--primary);padding:10px 24px;border-radius:28px;font-weight:600;font-size:1rem}
.btn-outline:hover{background:rgba(232,67,147,.1)}
.hero-img{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}

/* Sections */
section{padding:56px 0}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:1.8rem;margin-bottom:8px}
.section-title p{color:var(--text2);font-size:1rem}
.section-title .line{width:48px;height:3px;background:linear-gradient(90deg,var(--primary),var(--primary2));margin:12px auto 0;border-radius:2px}

/* Feature Cards */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:transform .2s,border-color .2s}
.feature-card:hover{transform:translateY(-4px);border-color:var(--primary)}
.feature-card .icon{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,rgba(232,67,147,.2),rgba(168,85,247,.2));display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:16px}
.feature-card h3{font-size:1.15rem;margin-bottom:8px}
.feature-card p{color:var(--text2);font-size:.92rem}

/* Content Blocks */
.content-block{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-bottom:48px}
.content-block.reverse{direction:rtl}
.content-block.reverse>*{direction:ltr}
.content-block img{border-radius:var(--radius);box-shadow:var(--shadow)}
.content-block h3{font-size:1.4rem;margin-bottom:12px;color:var(--primary)}
.content-block p{color:var(--text2);margin-bottom:12px;font-size:.95rem}

/* Tags */
.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}
.tag{background:var(--bg3);border:1px solid var(--border);padding:4px 14px;border-radius:16px;font-size:.85rem;color:var(--text2)}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{text-align:center;padding:24px 16px;background:var(--bg2);border-radius:var(--radius);border:1px solid var(--border);position:relative}
.step-num{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;margin:0 auto 12px;font-size:.9rem}
.step h4{font-size:1rem;margin-bottom:6px}
.step p{color:var(--text2);font-size:.85rem}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;overflow:hidden}
.faq-q{padding:16px 20px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.faq-q::after{content:"+";font-size:1.2rem;color:var(--primary)}
.faq-item.open .faq-q::after{content:"−"}
.faq-a{padding:0 20px 16px;color:var(--text2);font-size:.92rem;display:none}
.faq-item.open .faq-a{display:block}

/* Article / Legal */
.page-hero{padding:48px 0 32px;text-align:center;background:linear-gradient(180deg,rgba(168,85,247,.06),transparent)}
.page-hero h1{font-size:2rem;margin-bottom:8px}
.page-hero p{color:var(--text2)}
.article{max-width:860px;margin:0 auto;padding:32px 20px 64px}
.article h2{font-size:1.35rem;margin:32px 0 12px;color:var(--primary)}
.article h3{font-size:1.1rem;margin:24px 0 8px}
.article p,.article li{color:var(--text2);margin-bottom:12px;font-size:.95rem}
.article ul,.article ol{padding-left:24px;margin-bottom:16px}
.article ul li{list-style:disc}

/* Error Pages */
.error-page{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:80vh;text-align:center;padding:40px 20px}
.error-page h1{font-size:5rem;background:linear-gradient(135deg,var(--primary),var(--primary2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.error-page h2{font-size:1.5rem;margin:12px 0}
.error-page p{color:var(--text2);margin-bottom:24px}

/* Footer */
.site-footer{background:var(--bg2);border-top:1px solid var(--border);padding:48px 0 24px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:32px}
.footer-brand .logo{margin-bottom:12px}
.footer-brand p{color:var(--text2);font-size:.9rem;max-width:360px}
.footer-col h4{font-size:1rem;margin-bottom:16px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:8px}
.footer-col a{color:var(--text2);font-size:.9rem}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{border-top:1px solid var(--border);padding-top:20px;text-align:center;color:var(--text2);font-size:.85rem}

/* Breadcrumb */
.breadcrumb{padding:12px 0;font-size:.85rem;color:var(--text2)}
.breadcrumb a{color:var(--text2)}
.breadcrumb a:hover{color:var(--primary)}

/* Gallery */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.gallery-item{overflow:hidden;border-radius:var(--radius);aspect-ratio:9/16;background:var(--bg3)}
.gallery-item img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius);transition:transform .3s}
.gallery-item:hover img{transform:scale(1.03)}

/* Responsive */
@media(max-width:992px){
  .hero-grid,.content-block{grid-template-columns:1fr}
  .content-block.reverse{direction:ltr}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .gallery{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav-desktop,.header-inner .btn-download{display:none}
  .nav-toggle{display:block}
  .hero{padding:36px 0 24px}
  .hero-text h1{font-size:1.6rem}
  .features-grid,.steps,.gallery{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  section{padding:36px 0}
  .section-title h2{font-size:1.4rem}
}