/* === Reset & Base === */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:#333;line-height:1.6;background:#fff}
a{text-decoration:none;color:inherit;transition:color .3s}
ul,ol{list-style:none}
img{max-width:100%;display:block}

/* === Variables === */
:root{
  --red:#E20000;
  --red-dark:#D32F2F;
  --red-light:#FF4444;
  --dark:#1a1a1a;
  --darker:#111;
  --gray:#f5f5f5;
  --gray-mid:#999;
  --white:#fff;
  --shadow:0 4px 20px rgba(0,0,0,.08);
  --shadow-hover:0 8px 30px rgba(0,0,0,.15);
  --radius:14px;
  --max-w:1200px;
  --nav-h:64px;
}

/* === Utility === */
.container{max-width:var(--max-w);margin:0 auto;padding:0 20px}
.section-title{font-size:2rem;font-weight:700;text-align:center;margin-bottom:12px}
.section-sub{text-align:center;color:var(--gray-mid);margin-bottom:48px;font-size:1.05rem}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 32px;border-radius:50px;font-size:1rem;font-weight:600;transition:all .3s;cursor:pointer;border:none}
.btn-red{background:var(--red);color:#fff}
.btn-red:hover{background:var(--red-dark);transform:translateY(-2px);box-shadow:0 6px 20px rgba(226,0,0,.35)}
.btn-outline{border:2px solid #fff;color:#fff;background:transparent}
.btn-outline:hover{background:#fff;color:var(--red)}
.btn-outline-dark{border:2px solid var(--red);color:var(--red);background:transparent}
.btn-outline-dark:hover{background:var(--red);color:#fff}

/* === Navigation === */
.navbar{position:fixed;top:0;left:0;width:100%;height:var(--nav-h);z-index:1000;transition:background .3s,box-shadow .3s}
.navbar.transparent{background:transparent}
.navbar.solid{background:rgba(255,255,255,.98);box-shadow:0 2px 12px rgba(0,0,0,.08)}
.navbar .nav-inner{display:flex;align-items:center;height:100%;max-width:var(--max-w);margin:0 auto;padding:0 20px}
.navbar .logo{font-size:1.4rem;font-weight:800;color:var(--red);margin-right:40px;white-space:nowrap}
.navbar .logo span{font-size:.75rem;color:var(--gray-mid);font-weight:400;display:block;line-height:1;margin-top:2px}
.navbar.solid .logo{color:var(--red)}
.navbar.transparent .logo{color:#fff}
.navbar.transparent .logo span{color:rgba(255,255,255,.7)}
.nav-links{display:flex;align-items:center;gap:28px;flex:1}
.nav-links a{font-size:.95rem;font-weight:500;transition:color .3s;white-space:nowrap}
.navbar.transparent .nav-links a{color:rgba(255,255,255,.9)}
.navbar.transparent .nav-links a:hover{color:#fff}
.navbar.solid .nav-links a{color:#333}
.navbar.solid .nav-links a:hover{color:var(--red)}
.nav-right{display:flex;align-items:center;gap:16px;margin-left:auto}
.nav-right .search-box{display:flex;align-items:center;background:rgba(255,255,255,.15);border-radius:20px;padding:6px 14px}
.navbar.solid .search-box{background:var(--gray)}
.search-box input{border:none;outline:none;background:transparent;width:120px;font-size:.85rem;color:#333}
.navbar.transparent .search-box input{color:#fff}
.search-box input::placeholder{color:rgba(150,150,150,.7)}
.nav-right .nav-download{padding:8px 20px;border-radius:20px;font-size:.85rem;font-weight:600}
.navbar.transparent .nav-download{background:rgba(255,255,255,.2);color:#fff;border:1px solid rgba(255,255,255,.4)}
.navbar.solid .nav-download{background:var(--red);color:#fff}
.nav-right .nav-download:hover{opacity:.85}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.hamburger span{display:block;width:22px;height:2px;background:#333;transition:all .3s}
.navbar.transparent .hamburger span{background:#fff}

/* === Hero === */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;background:linear-gradient(135deg,#1a0000 0%,#3d0000 30%,var(--red-dark) 60%,var(--red) 100%);overflow:hidden;padding-top:var(--nav-h)}
.hero::before{content:'';position:absolute;inset:0;background:url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.03)" d="M0,192L48,197.3C96,203,192,213,288,229.3C384,245,480,267,576,250.7C672,235,768,181,864,170.7C960,160,1056,192,1152,197.3C1248,203,1344,181,1392,170.7L1440,160L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"/></svg>') no-repeat bottom/cover}
.hero-content{position:relative;z-index:2;max-width:700px;padding:0 20px}
.hero h1{font-size:3.2rem;font-weight:800;color:#fff;margin-bottom:16px;letter-spacing:2px}
.hero h1 em{font-style:normal;color:#ffcccc}
.hero .hero-sub{font-size:1.2rem;color:rgba(255,255,255,.85);margin-bottom:40px;line-height:1.8}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:24px}
.hero-btns .btn-main{padding:16px 48px;font-size:1.15rem;border-radius:50px;background:#fff;color:var(--red);font-weight:700;box-shadow:0 8px 30px rgba(0,0,0,.2)}
.hero-btns .btn-main:hover{transform:translateY(-3px);box-shadow:0 12px 40px rgba(0,0,0,.3)}
.hero-btns .btn-sub{padding:14px 28px;font-size:.95rem;border-radius:50px;border:2px solid rgba(255,255,255,.5);color:#fff;background:rgba(255,255,255,.1)}
.hero-btns .btn-sub:hover{background:rgba(255,255,255,.2)}
.hero-version{font-size:.8rem;color:rgba(255,255,255,.5);margin-bottom:40px}
.hero-scroll{display:inline-block;color:rgba(255,255,255,.6);font-size:.85rem;animation:bounce 2s infinite}
@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(8px)}}

/* === News Section === */
.news-section{padding:80px 0;background:var(--gray)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.news-card .card-img{height:180px;background:linear-gradient(135deg,var(--red),var(--red-dark));display:flex;align-items:center;justify-content:center;color:#fff;font-size:2.5rem}
.news-card .card-body{padding:20px}
.news-card .card-tag{display:inline-block;padding:3px 10px;border-radius:10px;font-size:.75rem;font-weight:600;margin-bottom:10px}
.tag-update{background:#fff0f0;color:var(--red)}
.tag-event{background:#f0f0ff;color:#5555cc}
.tag-pick{background:#f0fff0;color:#228822}
.tag-cloud{background:#fff8f0;color:#cc8800}
.news-card h3{font-size:1.05rem;font-weight:600;margin-bottom:8px;line-height:1.5}
.news-card p{font-size:.88rem;color:#666;line-height:1.7;margin-bottom:12px}
.news-card .card-meta{font-size:.78rem;color:var(--gray-mid)}
.news-more{text-align:center;margin-top:40px}

/* === Download Section === */
.download-section{padding:80px 0;background:#fff}
.download-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.download-card{background:var(--gray);border-radius:var(--radius);padding:28px 20px;text-align:center;transition:all .3s;position:relative}
.download-card:hover{background:#fff;box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.download-card .platform-icon{width:56px;height:56px;margin:0 auto 16px;border-radius:14px;background:linear-gradient(135deg,var(--red),var(--red-dark));display:flex;align-items:center;justify-content:center;font-size:1.6rem;color:#fff}
.download-card h3{font-size:1rem;font-weight:600;margin-bottom:6px}
.download-card .version{font-size:.78rem;color:var(--gray-mid);margin-bottom:16px}
.download-card .dl-btn{display:inline-block;padding:10px 28px;border-radius:25px;background:var(--red);color:#fff;font-size:.88rem;font-weight:600;transition:all .3s}
.download-card .dl-btn:hover{background:var(--red-dark);transform:scale(1.05)}
.download-card .dl-detail{display:none;margin-top:12px;font-size:.78rem;color:#666;text-align:left;line-height:1.8}
.download-card:hover .dl-detail{display:block}
.download-card.highlight{border:2px solid var(--red);background:#fff}

/* === Features Section === */
.features-section{padding:80px 0;background:var(--dark);color:#fff}
.features-section .section-title{color:#fff}
.features-section .section-sub{color:rgba(255,255,255,.5)}
.feature-row{display:flex;align-items:center;gap:60px;margin-bottom:60px}
.feature-row:nth-child(even){flex-direction:row-reverse}
.feature-row .feature-img{flex:1;min-height:260px;border-radius:var(--radius);background:linear-gradient(135deg,rgba(226,0,0,.2),rgba(226,0,0,.05));display:flex;align-items:center;justify-content:center;font-size:4rem}
.feature-row .feature-text{flex:1}
.feature-row .feature-text h3{font-size:1.5rem;font-weight:700;margin-bottom:12px}
.feature-row .feature-text p{color:rgba(255,255,255,.7);line-height:1.8;font-size:.95rem}

/* === FAQ Section === */
.faq-section{padding:80px 0;background:#fff}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid #eee;border-radius:var(--radius);margin-bottom:16px;overflow:hidden;transition:box-shadow .3s}
.faq-item:hover{box-shadow:var(--shadow)}
.faq-q{padding:20px 24px;font-size:1.05rem;font-weight:600;background:var(--gray);display:flex;align-items:center;gap:12px}
.faq-q::before{content:'Q';display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--red);color:#fff;font-size:.8rem;font-weight:700;flex-shrink:0}
.faq-a{padding:20px 24px 20px 64px;font-size:.92rem;color:#555;line-height:2}
.faq-a .step{display:block;margin-bottom:4px}
.faq-a .step-num{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;background:var(--red);color:#fff;font-size:.7rem;font-weight:700;margin-right:8px;flex-shrink:0}

/* === Footer === */
.footer{background:var(--darker);color:rgba(255,255,255,.6);padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-col h4{color:#fff;font-size:.95rem;font-weight:600;margin-bottom:16px}
.footer-col a{display:block;font-size:.85rem;margin-bottom:10px;color:rgba(255,255,255,.5);transition:color .3s}
.footer-col a:hover{color:var(--red-light)}
.footer-col p{font-size:.85rem;line-height:1.8}
.footer-brand .logo{font-size:1.3rem;font-weight:800;color:var(--red);margin-bottom:12px;display:block}
.footer-brand p{font-size:.85rem;line-height:1.8;color:rgba(255,255,255,.4)}
.footer-social{display:flex;gap:12px;margin-top:16px}
.footer-social a{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;font-size:.85rem;color:rgba(255,255,255,.6);transition:all .3s}
.footer-social a:hover{background:var(--red);color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;text-align:center;font-size:.8rem;color:rgba(255,255,255,.3)}

/* === Page Header (for sub pages) === */
.page-header{padding:120px 0 60px;background:linear-gradient(135deg,var(--dark),#2a0000);text-align:center;color:#fff}
.page-header h1{font-size:2.4rem;font-weight:700;margin-bottom:12px}
.page-header p{color:rgba(255,255,255,.6);font-size:1.05rem}
.breadcrumb{margin-top:16px;font-size:.85rem;color:rgba(255,255,255,.4)}
.breadcrumb a{color:rgba(255,255,255,.6)}
.breadcrumb a:hover{color:var(--red-light)}

/* === Download Page === */
.dl-page{padding:60px 0}
.dl-platforms{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.dl-platform-card{background:#fff;border:1px solid #eee;border-radius:var(--radius);padding:32px;text-align:center;transition:all .3s}
.dl-platform-card:hover{box-shadow:var(--shadow-hover);border-color:var(--red);transform:translateY(-4px)}
.dl-platform-card .icon{width:72px;height:72px;margin:0 auto 20px;border-radius:18px;background:linear-gradient(135deg,var(--red),var(--red-dark));display:flex;align-items:center;justify-content:center;font-size:2rem;color:#fff}
.dl-platform-card h3{font-size:1.2rem;font-weight:600;margin-bottom:8px}
.dl-platform-card .dl-ver{font-size:.82rem;color:var(--gray-mid);margin-bottom:6px}
.dl-platform-card .dl-size{font-size:.82rem;color:var(--gray-mid);margin-bottom:6px}
.dl-platform-card .dl-date{font-size:.82rem;color:var(--gray-mid);margin-bottom:20px}
.dl-platform-card .dl-btn{display:inline-block;padding:12px 36px;border-radius:30px;background:var(--red);color:#fff;font-weight:600;transition:all .3s}
.dl-platform-card .dl-btn:hover{background:var(--red-dark);transform:scale(1.05)}
.dl-platform-card .dl-note{margin-top:16px;font-size:.8rem;color:#999;line-height:1.7}

/* === News Detail === */
.news-detail{padding:60px 0}
.article{max-width:800px;margin:0 auto}
.article h2{font-size:1.6rem;font-weight:700;margin-bottom:16px;line-height:1.5}
.article .meta{font-size:.85rem;color:var(--gray-mid);margin-bottom:32px;padding-bottom:20px;border-bottom:1px solid #eee}
.article .content p{margin-bottom:16px;font-size:1rem;line-height:2;color:#444}
.article .content h3{font-size:1.2rem;font-weight:600;margin:32px 0 16px}
.article .content blockquote{background:var(--gray);border-left:4px solid var(--red);padding:16px 20px;margin:20px 0;border-radius:0 8px 8px 0;font-size:.95rem;color:#555}

/* === Help Page === */
.help-page{padding:60px 0}
.help-content{max-width:800px;margin:0 auto}
.help-category{margin-bottom:48px}
.help-category h2{font-size:1.4rem;font-weight:600;margin-bottom:20px;padding-bottom:12px;border-bottom:2px solid var(--red);display:inline-block}

/* === VIP Page === */
.vip-plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:60px 0}
.vip-card{background:#fff;border:2px solid #eee;border-radius:var(--radius);padding:40px 28px;text-align:center;transition:all .3s;position:relative}
.vip-card:hover{border-color:var(--red);box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.vip-card.popular{border-color:var(--red)}
.vip-card.popular::before{content:'最受欢迎';position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--red);color:#fff;padding:4px 20px;border-radius:20px;font-size:.78rem;font-weight:600}
.vip-card h3{font-size:1.3rem;font-weight:600;margin-bottom:8px}
.vip-card .price{font-size:2.5rem;font-weight:800;color:var(--red);margin:16px 0}
.vip-card .price span{font-size:.9rem;font-weight:400;color:#999}
.vip-card .perks{text-align:left;margin:24px 0}
.vip-card .perks li{padding:8px 0;font-size:.9rem;color:#555;border-bottom:1px solid #f5f5f5}
.vip-card .perks li::before{content:'';display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--red);margin-right:10px;vertical-align:middle}

/* === About Page === */
.about-content{padding:60px 0}
.about-block{display:flex;gap:48px;align-items:center;margin-bottom:60px}
.about-block:nth-child(even){flex-direction:row-reverse}
.about-block .about-img{flex:1;min-height:240px;border-radius:var(--radius);background:linear-gradient(135deg,#f5f5f5,#e8e8e8);display:flex;align-items:center;justify-content:center;font-size:3rem;color:#ccc}
.about-block .about-text{flex:1}
.about-block .about-text h2{font-size:1.5rem;font-weight:700;margin-bottom:12px}
.about-block .about-text p{color:#666;line-height:2;font-size:.95rem}

/* === Features Page === */
.features-page{padding:60px 0}
.feat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}
.feat-card{display:flex;gap:20px;padding:28px;background:var(--gray);border-radius:var(--radius);transition:all .3s}
.feat-card:hover{box-shadow:var(--shadow);background:#fff}
.feat-card .feat-icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,var(--red),var(--red-dark));display:flex;align-items:center;justify-content:center;font-size:1.5rem;color:#fff;flex-shrink:0}
.feat-card h3{font-size:1.05rem;font-weight:600;margin-bottom:8px}
.feat-card p{font-size:.88rem;color:#666;line-height:1.8}

/* === Playlists === */
.playlist-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:40px 0}
.playlist-card{border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow);transition:all .3s}
.playlist-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.playlist-card .pl-cover{height:180px;background:linear-gradient(135deg,var(--red),#ff6666);display:flex;align-items:center;justify-content:center;font-size:3rem;color:rgba(255,255,255,.5)}
.playlist-card .pl-info{padding:16px}
.playlist-card h3{font-size:.95rem;font-weight:600;margin-bottom:6px}
.playlist-card p{font-size:.8rem;color:var(--gray-mid)}

/* === Ranking === */
.ranking-table{max-width:800px;margin:40px auto}
.rank-item{display:flex;align-items:center;padding:14px 20px;border-bottom:1px solid #f0f0f0;transition:background .3s}
.rank-item:hover{background:var(--gray)}
.rank-num{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem;margin-right:16px;flex-shrink:0}
.rank-num.top{background:var(--red);color:#fff}
.rank-num.normal{background:#f0f0f0;color:#999}
.rank-info{flex:1}
.rank-info h4{font-size:.95rem;font-weight:600}
.rank-info p{font-size:.8rem;color:var(--gray-mid)}
.rank-artist{font-size:.85rem;color:#666;width:120px;text-align:right}

/* === Agreement Pages === */
.agreement-content{padding:60px 0;max-width:800px;margin:0 auto}
.agreement-content h2{font-size:1.3rem;font-weight:600;margin:32px 0 16px;padding-top:16px;border-top:1px solid #eee}
.agreement-content p{font-size:.92rem;color:#555;line-height:2;margin-bottom:12px}
.agreement-content .update-date{font-size:.82rem;color:var(--gray-mid);margin-bottom:32px}

/* === Responsive === */
@media(max-width:1024px){
  .download-grid{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:repeat(3,1fr)}
  .dl-platforms{grid-template-columns:repeat(2,1fr)}
  .vip-plans{grid-template-columns:repeat(2,1fr)}
  .feat-grid{grid-template-columns:1fr}
  .playlist-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:768px){
  .nav-links,.nav-right .search-box{display:none}
  .hamburger{display:flex}
  .hero h1{font-size:2rem}
  .hero .hero-sub{font-size:1rem}
  .news-grid{grid-template-columns:1fr}
  .download-grid{grid-template-columns:repeat(2,1fr)}
  .feature-row,.feature-row:nth-child(even){flex-direction:column}
  .footer-grid{grid-template-columns:1fr 1fr}
  .dl-platforms{grid-template-columns:1fr}
  .vip-plans{grid-template-columns:1fr}
  .about-block,.about-block:nth-child(even){flex-direction:column}
  .playlist-grid{grid-template-columns:repeat(2,1fr)}
  .section-title{font-size:1.5rem}
  .page-header h1{font-size:1.8rem}
}
@media(max-width:480px){
  .download-grid{grid-template-columns:1fr}
  .hero-btns{flex-direction:column;align-items:center}
  .footer-grid{grid-template-columns:1fr}
  .playlist-grid{grid-template-columns:1fr}
}