/* ============================================================
   网易云官网 - 全局样式表 (SEO Optimized)
   域名: wyymusic-b.com.cn
   ============================================================ */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:#333;line-height:1.75;background:#f8f9fa;min-height:100vh}
a{color:#c20c0c;text-decoration:none;transition:color .2s}
a:hover{color:#a00b0b;text-decoration:underline}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}
h1,h2,h3,h4{line-height:1.35;color:#1a1a1a}
h1{font-size:2.2rem;font-weight:800}
h2{font-size:1.75rem;font-weight:700}
h3{font-size:1.3rem;font-weight:600}
h4{font-size:1.1rem;font-weight:600}

.site-header{background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.06);position:sticky;top:0;z-index:1000}
.header-container{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;height:64px}
.logo-area{flex-shrink:0}
.logo-link{display:flex;align-items:center}
.main-nav ul{display:flex;gap:8px}
.main-nav a{display:block;padding:8px 16px;color:#333;font-weight:500;font-size:.95rem;border-radius:6px;transition:all .2s}
.main-nav a:hover,.main-nav a.active{color:#c20c0c;background:#fff5f5;text-decoration:none}
.header-actions .btn-primary{padding:8px 24px;background:#c20c0c;color:#fff;border-radius:24px;font-weight:600;font-size:.9rem;transition:all .2s;display:inline-block}
.header-actions .btn-primary:hover{background:#a00b0b;text-decoration:none;color:#fff}

.hero-banner{background:linear-gradient(135deg,#1a1a2e 0%,#16213e 50%,#0f3460 100%);color:#fff;padding:80px 0;position:relative;overflow:hidden}
.hero-banner::before{content:'';position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,rgba(194,12,12,.15),transparent 70%);border-radius:50%}
.hero-container{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:60px;position:relative;z-index:1}
.hero-content{flex:1}
.hero-content h1{font-size:2.8rem;color:#fff;margin-bottom:20px;font-weight:900}
.hero-subtitle{font-size:1.1rem;color:rgba(255,255,255,.8);margin-bottom:32px;line-height:1.8}
.hero-buttons{display:flex;gap:16px}
.btn-hero-primary,.btn-hero-secondary{padding:14px 36px;border-radius:30px;font-weight:700;font-size:1rem;display:inline-block;transition:all .3s}
.btn-hero-primary{background:#c20c0c;color:#fff}
.btn-hero-primary:hover{background:#e02424;color:#fff;text-decoration:none;transform:translateY(-2px);box-shadow:0 8px 25px rgba(194,12,12,.4)}
.btn-hero-secondary{background:rgba(255,255,255,.15);color:#fff;border:2px solid rgba(255,255,255,.3)}
.btn-hero-secondary:hover{background:rgba(255,255,255,.25);text-decoration:none;color:#fff}
.hero-image{flex-shrink:0}
.hero-image img{border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.4)}

.section-header{text-align:center;margin-bottom:50px}
.section-header h2{font-size:2rem;margin-bottom:12px}
.section-desc{color:#666;font-size:1.05rem;max-width:700px;margin:0 auto}

.features-section{padding:80px 0;background:#fff}
.features-grid{max-width:1200px;margin:0 auto;padding:0 20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.feature-card{background:#fff;border:1px solid #eee;border-radius:16px;padding:32px 24px;transition:all .3s}
.feature-card:hover{box-shadow:0 12px 40px rgba(0,0,0,.08);transform:translateY(-4px);border-color:#fcc}
.feature-icon{font-size:2.5rem;margin-bottom:16px}
.feature-card h3{margin-bottom:12px;color:#1a1a1a}
.feature-card p{color:#666;font-size:.95rem;line-height:1.8}

.products-section{padding:80px 0;background:#f8f9fa}
.products-grid{max-width:1200px;margin:0 auto;padding:0 20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.product-item{background:#fff;border-radius:16px;padding:28px;border-left:4px solid #c20c0c;transition:all .3s}
.product-item:hover{box-shadow:0 8px 30px rgba(0,0,0,.1)}
.product-item h3{color:#c20c0c;margin-bottom:10px}
.product-item p{color:#555;font-size:.9rem;line-height:1.7;margin-bottom:12px}
.btn-link{color:#c20c0c;font-weight:600;font-size:.9rem}
.btn-link:hover{color:#a00b0b}

.faq-section{padding:80px 0;background:#fff}
.faq-category{max-width:1000px;margin:0 auto 40px;padding:0 20px}
.faq-cat-title{font-size:1.3rem;color:#c20c0c;padding:14px 20px;background:linear-gradient(135deg,#fff5f5,#ffe8e8);border-radius:10px;margin-bottom:20px;border-left:5px solid #c20c0c}
.faq-item{background:#fafafa;border-radius:12px;padding:24px 28px;border:1px solid #eee}
.faq-item h4{color:#1a1a1a;margin-bottom:18px;font-size:1.15rem}
.faq-answer p{margin-bottom:14px;line-height:1.85;color:#444;text-align:justify}
.faq-answer strong{color:#c20c0c}

.stats-section{padding:70px 0;background:linear-gradient(135deg,#c20c0c,#e02424);color:#fff}
.stats-section .section-header h2{color:#fff}
.stats-grid{max-width:1000px;margin:0 auto;padding:0 20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:30px;text-align:center}
.stat-number{display:block;font-size:2.8rem;font-weight:900;margin-bottom:8px}
.stat-label{font-size:1rem;opacity:.85}

.page-banner{background:linear-gradient(135deg,#1a1a2e,#c20c0c);color:#fff;text-align:center;padding:60px 20px}
.page-banner h1{color:#fff;margin-bottom:8px}
.page-banner p{font-size:1.1rem;opacity:.85}

.product-detail{max-width:1000px;margin:0 auto;padding:50px 20px}
.product-detail-card{background:#fff;border-radius:12px;padding:32px;margin-bottom:28px;border:1px solid #eee;transition:all .3s}
.product-detail-card:hover{box-shadow:0 6px 25px rgba(0,0,0,.08)}
.product-detail-card h2{color:#c20c0c;margin-bottom:14px}
.product-detail-card>p{color:#555;line-height:1.8;margin-bottom:16px}
.product-features{background:#fafafa;border-radius:8px;padding:20px}
.product-features h3{color:#333;margin-bottom:10px}
.product-features ul{padding-left:20px}
.product-features li{list-style:disc;color:#555;padding:4px 0;line-height:1.7}

.services-content{max-width:1000px;margin:0 auto;padding:50px 20px}
.service-article{background:#fff;border-radius:12px;padding:32px;margin-bottom:24px;border:1px solid #eee}
.service-article h2{color:#c20c0c;margin-bottom:14px;font-size:1.3rem}
.service-article p{color:#555;line-height:1.9;text-align:justify}

.about-content{max-width:1000px;margin:0 auto;padding:50px 20px}
.about-section{background:#fff;border-radius:12px;padding:32px;margin-bottom:28px;border:1px solid #eee}
.about-section h2{color:#c20c0c;margin-bottom:16px}
.about-section>p{color:#555;line-height:1.9;margin-bottom:14px}
.timeline-item{border-left:3px solid #c20c0c;margin-left:12px;padding:0 0 24px 20px}
.timeline-item:last-child{border-left-color:transparent}
.timeline-item h3{color:#c20c0c;margin-bottom:6px}
.timeline-item p{color:#666;line-height:1.7}
.values-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;margin-top:16px}
.value-card{background:#fafafa;border-radius:10px;padding:24px;border:1px solid #eee}
.value-card h3{color:#c20c0c;margin-bottom:8px}
.value-card p{color:#666;font-size:.9rem;line-height:1.7}

.help-content{max-width:1100px;margin:0 auto;padding:50px 20px}
.help-categories{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;margin-bottom:40px}
.help-category-card{background:#fff;border-radius:12px;padding:28px;border:1px solid #eee}
.help-category-card h2{color:#c20c0c;font-size:1.15rem;margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid #f5f5f5}
.help-category-card li{padding:6px 0}
.help-category-card a{color:#555;font-size:.9rem}
.help-category-card a:hover{color:#c20c0c}
.help-detail{background:#fff;border-radius:12px;padding:32px;margin-bottom:24px;border:1px solid #eee}
.help-detail h2{color:#c20c0c;margin-bottom:14px}
.help-detail p{color:#555;line-height:1.9;text-align:justify}

.contact-content{max-width:1100px;margin:0 auto;padding:50px 20px}
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;margin-bottom:40px}
.contact-card{background:#fff;border-radius:12px;padding:28px;border:1px solid #eee;transition:all .3s}
.contact-card:hover{box-shadow:0 6px 20px rgba(0,0,0,.06)}
.contact-card h2{color:#c20c0c;font-size:1.15rem;margin-bottom:12px}
.contact-card>p{color:#666;font-size:.9rem;line-height:1.7;margin-bottom:12px}
.contact-card li{color:#555;font-size:.9rem;padding:3px 0}
.contact-note{color:#999!important;font-size:.82rem!important;margin-top:10px;border-top:1px solid #f0f0f0;padding-top:10px}
.contact-disclaimer{background:#fffbe6;border:1px solid #ffe58f;border-radius:10px;padding:20px 24px}
.contact-disclaimer h3{color:#d48806;margin-bottom:8px}
.contact-disclaimer p{color:#8c6d00;font-size:.9rem;line-height:1.7}

.sitemap-content{max-width:900px;margin:0 auto;padding:50px 20px}
.sitemap-block{background:#fff;border-radius:12px;padding:32px;margin-bottom:24px;border:1px solid #eee}
.sitemap-block h2{color:#c20c0c;margin-bottom:18px}
.sitemap-list>li{margin-bottom:14px}
.sitemap-list>li>a{font-weight:600;color:#c20c0c;font-size:1rem}
.sitemap-list ul{margin:8px 0 0 20px}
.sitemap-list ul li{color:#777;font-size:.88rem;padding:2px 0;list-style:circle}
.seo-info p{padding:4px 0;color:#555;font-size:.9rem}

.site-footer{background:#1a1a2e;color:rgba(255,255,255,.7);padding:50px 0 0}
.footer-container{max-width:1200px;margin:0 auto;padding:0 20px}
.footer-columns{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:30px;padding-bottom:30px}
.footer-col h4{color:#fff;font-size:1rem;margin-bottom:16px}
.footer-col li{padding:4px 0}
.footer-col a{color:rgba(255,255,255,.6);font-size:.88rem}
.footer-col a:hover{color:#e02424;text-decoration:none}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:24px 0;text-align:center}
.footer-bottom p{font-size:.82rem;color:rgba(255,255,255,.45);margin-bottom:4px}
.footer-keywords{font-size:.75rem!important;color:rgba(255,255,255,.3)!important}

.btn-primary{padding:10px 24px;background:#c20c0c;color:#fff;border-radius:24px;font-weight:600;font-size:.9rem;display:inline-block;transition:all .2s}
.btn-primary:hover{background:#a00b0b;color:#fff;text-decoration:none}

@media(max-width:768px){
    .header-container{flex-wrap:wrap;height:auto;padding:12px 16px}
    .main-nav ul{flex-wrap:wrap;justify-content:center;gap:4px}
    .main-nav a{padding:6px 12px;font-size:.85rem}
    .hero-container{flex-direction:column;text-align:center;gap:30px}
    .hero-content h1{font-size:1.8rem}
    .hero-buttons{justify-content:center}
    h1{font-size:1.6rem}
    h2{font-size:1.3rem}
    .features-grid,.products-grid,.contact-grid,.help-categories,.values-grid{grid-template-columns:1fr}
    .stats-grid{grid-template-columns:repeat(2,1fr)}
    .footer-columns{grid-template-columns:repeat(2,1fr)}
}