/* ===== 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','Inter','SF Pro Text','Roboto',sans-serif;background:#0B1120;color:#E2E8F0;line-height:1.6;overflow-x:hidden}
a{color:inherit;text-decoration:none;transition:color .2s}
ul,ol{list-style:none}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.2}
h1{font-size:2.5rem}
h2{font-size:2rem;margin-bottom:1rem}
h3{font-size:1.25rem}
p{margin-bottom:1rem}
.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}
section{padding:5rem 0}

/* ===== Typography ===== */
.gradient-text{background:linear-gradient(135deg,#1E6FFF,#00D2FF);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.section-subtitle{color:#94A3B8;font-size:1.1rem;max-width:700px;margin:0 auto 3rem;text-align:center}
.section-title{text-align:center;margin-bottom:.75rem}

/* ===== Header ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;padding:1rem 0;transition:background .3s,box-shadow .3s}
.site-header.scrolled{background:rgba(11,17,32,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 1px 0 rgba(255,255,255,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:.5rem;font-size:1.25rem;font-weight:800}
.logo-icon{width:32px;height:32px;border-radius:8px;background:linear-gradient(135deg,#1E6FFF,#00D2FF);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:900;font-size:.9rem}
.nav-menu{display:flex;align-items:center;gap:2rem}
.nav-menu a{font-size:.9rem;color:#94A3B8;transition:color .2s}
.nav-menu a:hover{color:#fff}
.header-actions{display:flex;align-items:center;gap:1rem}
.lang-switch{font-size:.85rem;color:#94A3B8;cursor:pointer}
.btn-login{font-size:.9rem;color:#94A3B8;padding:.4rem .8rem;border:1px solid rgba(148,163,184,.3);border-radius:6px;transition:all .2s}
.btn-login:hover{color:#fff;border-color:rgba(148,163,184,.6)}
.btn-download-sm{display:inline-block;padding:.5rem 1.2rem;background:linear-gradient(135deg,#1E6FFF,#00D2FF);color:#fff;font-size:.9rem;font-weight:600;border-radius:8px;transition:transform .2s,box-shadow .2s}
.btn-download-sm:hover{transform:translateY(-1px);box-shadow:0 4px 20px rgba(30,111,255,.4);color:#fff}
.mobile-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer}
.mobile-toggle span{width:24px;height:2px;background:#E2E8F0;border-radius:2px}

/* ===== Hero ===== */
.hero{padding:10rem 0 6rem;text-align:center;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(ellipse at 50% 0%,rgba(30,111,255,.15) 0%,transparent 60%);pointer-events:none}
.hero h1{font-size:3.2rem;margin-bottom:1.5rem;letter-spacing:-.02em}
.hero .subtitle{font-size:1.2rem;color:#94A3B8;max-width:700px;margin:0 auto 2.5rem;line-height:1.8}
.hero-cta{display:flex;align-items:center;justify-content:center;gap:1rem;flex-wrap:wrap;margin-bottom:2rem}
.btn-primary{display:inline-block;padding:.85rem 2.2rem;background:linear-gradient(135deg,#1E6FFF,#00D2FF);color:#fff;font-size:1.05rem;font-weight:700;border-radius:10px;transition:transform .2s,box-shadow .2s}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(30,111,255,.4);color:#fff}
.btn-ghost{display:inline-block;padding:.85rem 2.2rem;border:1px solid rgba(148,163,184,.3);color:#94A3B8;font-size:1.05rem;font-weight:600;border-radius:10px;transition:all .2s}
.btn-ghost:hover{border-color:#1E6FFF;color:#fff}
.trust-badges{display:flex;align-items:center;justify-content:center;gap:2rem;flex-wrap:wrap;color:#64748B;font-size:.85rem}
.trust-badges span{display:flex;align-items:center;gap:.4rem}
.hero-visual{margin-top:4rem;position:relative}
.hero-mockup{max-width:900px;margin:0 auto;background:#1E293B;border-radius:16px;border:1px solid rgba(255,255,255,.06);padding:1.5rem;box-shadow:0 25px 80px rgba(0,0,0,.5)}
.mockup-bar{display:flex;gap:6px;margin-bottom:1rem}
.mockup-dot{width:10px;height:10px;border-radius:50%;background:#334155}
.mockup-dot:nth-child(1){background:#EF4444}
.mockup-dot:nth-child(2){background:#F59E0B}
.mockup-dot:nth-child(3){background:#10B981}
.mockup-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:.75rem}
.mockup-window{background:#0F172A;border-radius:8px;padding:1rem;min-height:120px;border:1px solid rgba(255,255,255,.04)}
.mockup-window-title{font-size:.7rem;color:#64748B;margin-bottom:.5rem}
.mockup-window-content{height:60px;border-radius:4px;background:linear-gradient(135deg,rgba(30,111,255,.1),rgba(0,210,255,.05))}

/* ===== Value Cards ===== */
.values{background:#0F172A}
.values-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem}
.value-card{background:#1E293B;border-radius:16px;padding:2rem;border:1px solid rgba(255,255,255,.04);transition:transform .3s,box-shadow .3s}
.value-card:hover{transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,.3)}
.value-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:1.25rem}
.value-icon.gift{background:rgba(245,158,11,.12);color:#F59E0B}
.value-icon.shield{background:rgba(30,111,255,.12);color:#1E6FFF}
.value-icon.bolt{background:rgba(0,210,255,.12);color:#00D2FF}
.value-icon.cloud{background:rgba(16,185,129,.12);color:#10B981}
.value-card h3{margin-bottom:.75rem;font-size:1.15rem}
.value-card p{color:#94A3B8;font-size:.9rem;line-height:1.7;margin-bottom:0}

/* ===== Features ===== */
.features-tabs{display:flex;justify-content:center;gap:.5rem;margin-bottom:3rem;flex-wrap:wrap}
.tab-link{display:inline-block;padding:.6rem 1.5rem;border-radius:8px;font-size:.9rem;color:#94A3B8;background:transparent;border:1px solid rgba(255,255,255,.06);transition:all .2s}
.tab-link:hover,.tab-link.active{background:rgba(30,111,255,.12);color:#1E6FFF;border-color:rgba(30,111,255,.3)}
.feature-block{display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center;margin-bottom:5rem}
.feature-block:nth-child(even){direction:rtl}
.feature-block:nth-child(even)>*{direction:ltr}
.feature-text h3{font-size:1.5rem;margin-bottom:1rem}
.feature-text p{color:#94A3B8;line-height:1.8}
.feature-visual{background:#1E293B;border-radius:16px;padding:2rem;border:1px solid rgba(255,255,255,.04);min-height:280px;display:flex;align-items:center;justify-content:center}
.feature-visual-inner{width:100%;padding:1.5rem;background:#0F172A;border-radius:12px;border:1px solid rgba(255,255,255,.04)}
.fv-row{display:flex;gap:.75rem;margin-bottom:.75rem;align-items:center}
.fv-label{font-size:.75rem;color:#64748B;min-width:80px}
.fv-bar{flex:1;height:8px;border-radius:4px;background:#1E293B}
.fv-bar-fill{height:100%;border-radius:4px;background:linear-gradient(90deg,#1E6FFF,#00D2FF)}

/* ===== Solutions ===== */
.solutions{background:#0F172A}
.solutions-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}
.solution-card{background:#1E293B;border-radius:16px;padding:2.5rem;border:1px solid rgba(255,255,255,.04);transition:transform .3s,box-shadow .3s}
.solution-card:hover{transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,.3)}
.solution-tag{display:inline-block;padding:.25rem .75rem;border-radius:20px;font-size:.75rem;font-weight:600;margin-bottom:1rem}
.solution-tag.ecom{background:rgba(30,111,255,.12);color:#1E6FFF}
.solution-tag.social{background:rgba(0,210,255,.12);color:#00D2FF}
.solution-tag.ads{background:rgba(245,158,11,.12);color:#F59E0B}
.solution-tag.data{background:rgba(16,185,129,.12);color:#10B981}
.solution-card h3{font-size:1.3rem;margin-bottom:.75rem}
.solution-card .pain{color:#F87171;font-size:.9rem;margin-bottom:.75rem;font-style:italic}
.solution-card .solve{color:#94A3B8;font-size:.9rem;line-height:1.7;margin-bottom:0}

/* ===== Comparison ===== */
.comparison-table{width:100%;border-collapse:separate;border-spacing:0;border-radius:16px;overflow:hidden;border:1px solid rgba(255,255,255,.06)}
.comparison-table th,.comparison-table td{padding:1rem 1.25rem;text-align:center;font-size:.9rem}
.comparison-table thead th{background:#1E293B;font-weight:600;color:#94A3B8;border-bottom:1px solid rgba(255,255,255,.06)}
.comparison-table thead th:first-child{text-align:left}
.comparison-table thead th.highlight{background:linear-gradient(135deg,rgba(30,111,255,.2),rgba(0,210,255,.1));color:#1E6FFF}
.comparison-table tbody td{background:#0F172A;border-bottom:1px solid rgba(255,255,255,.04)}
.comparison-table tbody td:first-child{text-align:left;color:#94A3B8;font-weight:500}
.comparison-table tbody td.highlight{background:rgba(30,111,255,.05)}
.comparison-table tbody tr:last-child td{border-bottom:none}
.check{color:#10B981;font-weight:700}
.cross{color:#64748B}
.star{color:#F59E0B;font-weight:700}

/* ===== Stats ===== */
.stats{background:#0F1120}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;text-align:center}
.stat-item h3{font-size:2.5rem;margin-bottom:.5rem}
.stat-item p{color:#94A3B8;font-size:.9rem;margin-bottom:0}

/* ===== Testimonials ===== */
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;margin-top:3rem}
.testimonial-card{background:#1E293B;border-radius:16px;padding:2rem;border:1px solid rgba(255,255,255,.04)}
.testimonial-card .quote{color:#CBD5E1;font-size:.95rem;line-height:1.8;margin-bottom:1.25rem;font-style:italic}
.testimonial-card .author{display:flex;align-items:center;gap:.75rem}
.testimonial-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#1E6FFF,#00D2FF);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.85rem}
.testimonial-info .name{font-weight:600;font-size:.9rem}
.testimonial-info .role{color:#64748B;font-size:.8rem}

/* ===== CTA Section ===== */
.cta-section{text-align:center;background:linear-gradient(180deg,rgba(30,111,255,.08) 0%,transparent 100%);position:relative}
.cta-section h2{font-size:2.2rem;margin-bottom:1rem}
.cta-section p{color:#94A3B8;margin-bottom:2rem;font-size:1.1rem}
.download-buttons{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap;margin-bottom:1.5rem}
.dl-btn{display:inline-flex;align-items:center;gap:.75rem;padding:1rem 2rem;background:#1E293B;border-radius:12px;border:1px solid rgba(255,255,255,.06);transition:all .2s}
.dl-btn:hover{border-color:rgba(30,111,255,.4);transform:translateY(-2px);box-shadow:0 8px 30px rgba(0,0,0,.3);color:#fff}
.dl-btn .dl-icon{font-size:1.5rem}
.dl-btn .dl-text{text-align:left}
.dl-btn .dl-text small{display:block;font-size:.7rem;color:#64748B}
.dl-btn .dl-text strong{display:block;font-size:.95rem}
.cta-note{color:#64748B;font-size:.85rem}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#1E293B;border-radius:12px;margin-bottom:.75rem;border:1px solid rgba(255,255,255,.04);overflow:hidden}
.faq-item summary{padding:1.25rem 1.5rem;cursor:pointer;font-weight:600;font-size:1rem;list-style:none;display:flex;align-items:center;justify-content:space-between;transition:color .2s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'+';font-size:1.3rem;color:#64748B;transition:transform .2s}
.faq-item[open] summary::after{content:'-'}
.faq-item[open] summary{color:#1E6FFF}
.faq-answer{padding:0 1.5rem 1.25rem;color:#94A3B8;font-size:.9rem;line-height:1.8}
.faq-answer ol,.faq-answer ul{padding-left:1.25rem;margin-top:.5rem}
.faq-answer li{margin-bottom:.5rem}
.faq-answer li::marker{color:#1E6FFF}

/* ===== Footer ===== */
.site-footer{background:#0F172A;padding:4rem 0 2rem;border-top:1px solid rgba(255,255,255,.04)}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;margin-bottom:3rem}
.footer-col h4{font-size:.9rem;font-weight:600;margin-bottom:1rem;color:#E2E8F0}
.footer-col a{display:block;font-size:.85rem;color:#64748B;margin-bottom:.5rem;transition:color .2s}
.footer-col a:hover{color:#1E6FFF}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem;padding-top:2rem;border-top:1px solid rgba(255,255,255,.04);font-size:.8rem;color:#475569}
.footer-bottom a{color:#475569;display:inline}
.footer-bottom a:hover{color:#1E6FFF}

/* ===== Page Hero (inner pages) ===== */
.page-hero{padding:9rem 0 4rem;text-align:center;position:relative}
.page-hero::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(ellipse at 50% 0%,rgba(30,111,255,.1) 0%,transparent 60%);pointer-events:none}
.page-hero h1{font-size:2.5rem;margin-bottom:1rem}
.page-hero p{color:#94A3B8;font-size:1.1rem;max-width:600px;margin:0 auto}
.breadcrumb{display:flex;justify-content:center;gap:.5rem;margin-bottom:1.5rem;font-size:.85rem;color:#64748B}
.breadcrumb a{color:#64748B}
.breadcrumb a:hover{color:#1E6FFF}

/* ===== Pricing ===== */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;align-items:start}
.pricing-card{background:#1E293B;border-radius:16px;padding:2.5rem;border:1px solid rgba(255,255,255,.04);transition:transform .3s}
.pricing-card.popular{border-color:rgba(30,111,255,.4);position:relative}
.pricing-card.popular::before{content:'\6700\53D7\6B22\8FCE';position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,#1E6FFF,#00D2FF);color:#fff;font-size:.75rem;font-weight:600;padding:.25rem 1rem;border-radius:20px}
.pricing-card:hover{transform:translateY(-4px)}
.pricing-card h3{font-size:1.2rem;margin-bottom:.5rem}
.pricing-card .price{font-size:2.5rem;font-weight:800;margin-bottom:.25rem}
.pricing-card .price small{font-size:.9rem;font-weight:400;color:#64748B}
.pricing-card .price-note{font-size:.8rem;color:#64748B;margin-bottom:1.5rem}
.pricing-card ul{margin-bottom:2rem}
.pricing-card li{font-size:.9rem;color:#94A3B8;padding:.4rem 0;display:flex;align-items:center;gap:.5rem}
.pricing-card li::before{content:'\2713';color:#10B981;font-weight:700}
.pricing-card .btn-pricing{display:block;text-align:center;padding:.75rem;border-radius:10px;font-weight:600;transition:all .2s}
.pricing-card .btn-pricing.primary{background:linear-gradient(135deg,#1E6FFF,#00D2FF);color:#fff}
.pricing-card .btn-pricing.primary:hover{box-shadow:0 4px 20px rgba(30,111,255,.4)}
.pricing-card .btn-pricing.outline{border:1px solid rgba(148,163,184,.3);color:#94A3B8}
.pricing-card .btn-pricing.outline:hover{border-color:#1E6FFF;color:#fff}

/* ===== About ===== */
.about-content{max-width:800px;margin:0 auto}
.about-content p{color:#94A3B8;font-size:1rem;line-height:1.9;margin-bottom:1.5rem}
.about-features{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem;margin-top:3rem}
.about-feature{background:#1E293B;border-radius:12px;padding:1.5rem;border:1px solid rgba(255,255,255,.04)}
.about-feature h3{font-size:1.1rem;margin-bottom:.5rem}
.about-feature p{color:#94A3B8;font-size:.9rem;margin-bottom:0}

/* ===== Sitemap ===== */
.sitemap-content{max-width:900px;margin:0 auto}
.sitemap-section{margin-bottom:2rem}
.sitemap-section h3{font-size:1.1rem;margin-bottom:1rem;padding-bottom:.5rem;border-bottom:1px solid rgba(255,255,255,.06)}
.sitemap-links{display:grid;grid-template-columns:repeat(2,1fr);gap:.5rem}
.sitemap-links a{display:block;padding:.5rem .75rem;font-size:.9rem;color:#94A3B8;border-radius:6px;transition:all .2s}
.sitemap-links a:hover{background:rgba(30,111,255,.08);color:#1E6FFF}

/* ===== Responsive ===== */
@media(max-width:1024px){
.values-grid{grid-template-columns:repeat(2,1fr)}
.feature-block{grid-template-columns:1fr;gap:2rem}
.feature-block:nth-child(even){direction:ltr}
.stats-grid{grid-template-columns:repeat(2,1fr)}
.testimonials-grid{grid-template-columns:1fr}
.pricing-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
h1{font-size:2rem}
.hero h1{font-size:2.2rem}
.nav-menu{display:none}
.mobile-toggle{display:flex}
.header-actions .lang-switch,.header-actions .btn-login{display:none}
.values-grid{grid-template-columns:1fr}
.solutions-grid{grid-template-columns:1fr}
.comparison-table{font-size:.8rem}
.comparison-table th,.comparison-table td{padding:.6rem .5rem}
.stats-grid{grid-template-columns:1fr 1fr}
.download-buttons{flex-direction:column;align-items:center}
.footer-grid{grid-template-columns:1fr}
.footer-bottom{flex-direction:column;text-align:center}
.about-features{grid-template-columns:1fr}
.sitemap-links{grid-template-columns:1fr}
.hero-cta{flex-direction:column}
.mockup-grid{grid-template-columns:1fr}
}