/* zvl15 - 桃粉色 | 星空体育直播平台 */
:root {
  --zvl-primary: #DB2777;
  --zvl-primary-dark: #9D174D;
  --zvl-accent: #FBBF24;
  --zvl-accent2: #F59E0B;
  --zvl-bg: #ffffff;
  --zvl-sub-bg: #fdf2f8;
  --zvl-text: #1f2937;
  --zvl-text-2: #6b7280;
  --zvl-border: #e5e7eb;
  --zvl-gradient-start: #DB2777;
  --zvl-gradient-end: #9D174D;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif; color: var(--zvl-text); background: var(--zvl-bg); line-height: 1.6; }
a { color: var(--zvl-primary); text-decoration: none; transition: all .3s; }
a:hover { color: var(--zvl-primary-dark); }

/* Header */
.zvl-header { background: #fff; box-shadow: 0 2px 12px rgba(0,0,0,.06); position: sticky; top: 0; z-index: 1000; }
.zvl-header .navbar { padding: 14px 0; }
.zvl-header .logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.zvl-header .logo-icon { width: 40px; height: 40px; border-radius: 10px; background: linear-gradient(135deg, var(--zvl-gradient-start), var(--zvl-gradient-end)); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-weight: 700; font-size: 1.1rem; }
.zvl-header .logo-text { font-size: 1.1rem; font-weight: 700; color: var(--zvl-text); }
.zvl-header .navbar-nav .nav-link { color: var(--zvl-text)!important; font-size: .9rem; font-weight: 500; padding: 10px 16px!important; position: relative; transition: .3s; }
.zvl-header .navbar-nav .nav-link:hover,.zvl-header .navbar-nav .nav-link.active { color: var(--zvl-primary)!important; }
.zvl-header .navbar-nav .nav-link::after { content:''; position: absolute; left: 50%; bottom: 4px; width: 0; height: 2px; background: var(--zvl-primary); transition: all .3s; }
.zvl-header .navbar-nav .nav-link:hover::after,.zvl-header .navbar-nav .nav-link.active::after { width: calc(100% - 32px); left: 16px; }
.zvl-btn-register { background: var(--zvl-accent); color: #000; font-weight: 600; padding: 8px 20px; border-radius: 8px; display: inline-flex; align-items: center; gap: 6px; text-decoration: none; transition: .3s; border: none; }
.zvl-btn-register:hover { background: var(--zvl-accent2); color: #000; transform: translateY(-1px); }

/* Hero */
.zvl-hero { position: relative; padding: 100px 0 80px; background: linear-gradient(135deg, var(--zvl-gradient-start) 0%, var(--zvl-gradient-end) 100%); color: #fff; overflow: hidden; }
.zvl-hero::before { content:''; position: absolute; inset: 0; background-image: radial-gradient(circle, rgba(255,255,255,.1) 1px, transparent 1px); background-size: 30px 30px; opacity: .4; }
.zvl-hero-content { position: relative; z-index: 2; text-align: center; max-width: 800px; margin: 0 auto; }
.zvl-hero h1 { font-size: 2.4rem; font-weight: 700; margin-bottom: 18px; line-height: 1.3; }
.zvl-hero .lead { font-size: 1.1rem; color: rgba(255,255,255,.9); margin-bottom: 14px; font-weight: 500; }
.zvl-hero p { font-size: 1rem; color: rgba(255,255,255,.85); line-height: 1.8; margin-bottom: 28px; }
.zvl-hero-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.zvl-btn-hero-primary { background: var(--zvl-accent); color: #000; padding: 13px 32px; border-radius: 30px; font-weight: 600; display: inline-flex; align-items: center; gap: 8px; text-decoration: none; transition: .3s; }
.zvl-btn-hero-primary:hover { background: var(--zvl-accent2); color: #000; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,.15); }
.zvl-btn-hero-outline { background: rgba(255,255,255,.15); color: #fff; padding: 13px 32px; border-radius: 30px; font-weight: 600; display: inline-flex; align-items: center; gap: 8px; text-decoration: none; border: 1px solid rgba(255,255,255,.4); transition: .3s; backdrop-filter: blur(8px); }
.zvl-btn-hero-outline:hover { background: rgba(255,255,255,.25); color: #fff; transform: translateY(-2px); }

/* Section */
.zvl-section { padding: 80px 0; }
.zvl-section.alt { background: var(--zvl-sub-bg); }
.zvl-stitle { text-align: center; margin-bottom: 50px; }
.zvl-stitle h2 { font-size: 1.9rem; font-weight: 700; color: var(--zvl-text); margin-bottom: 12px; }
.zvl-stitle h2 .gradient { background: linear-gradient(135deg, var(--zvl-gradient-start), var(--zvl-gradient-end)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.zvl-stitle p { color: var(--zvl-text-2); font-size: 1rem; margin: 0; }
.zvl-stitle::after { content:''; display: block; width: 60px; height: 3px; background: linear-gradient(to right, var(--zvl-gradient-start), var(--zvl-gradient-end)); margin: 18px auto 0; border-radius: 2px; }

/* About */
.zvl-about-content { text-align: center; max-width: 900px; margin: 0 auto; }
.zvl-about-content p { color: var(--zvl-text-2); font-size: 1rem; line-height: 1.9; margin-bottom: 18px; }
.zvl-about-img { margin-top: 40px; border-radius: 16px; overflow: hidden; box-shadow: 0 16px 40px rgba(0,0,0,.1); }
.zvl-about-img img { width: 100%; display: block; height: auto; }

/* Why Us / Product */
.zvl-product-main { background: linear-gradient(135deg, var(--zvl-gradient-start), var(--zvl-gradient-end)); border-radius: 16px; padding: 40px 28px; color: #fff; height: 100%; min-height: 320px; display: flex; flex-direction: column; justify-content: center; text-align: center; box-shadow: 0 12px 30px rgba(0,0,0,.12); transition: .3s; }
.zvl-product-main:hover { transform: translateY(-5px); box-shadow: 0 18px 40px rgba(0,0,0,.18); }
.zvl-product-main i { font-size: 3.5rem; margin-bottom: 20px; opacity: .95; }
.zvl-product-main h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 14px; }
.zvl-product-main p { font-size: .92rem; color: rgba(255,255,255,.9); line-height: 1.7; }
.zvl-product-card { background: #fff; border: 1px solid var(--zvl-border); border-radius: 16px; padding: 30px 24px; text-align: center; height: 100%; transition: all .3s; }
.zvl-product-card:hover { transform: translateY(-5px); box-shadow: 0 16px 40px rgba(0,0,0,.12); border-color: var(--zvl-primary); }
.zvl-product-card-icon { width: 80px; height: 80px; border-radius: 50%; background: linear-gradient(135deg, var(--zvl-primary), var(--zvl-accent)); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-size: 2rem; margin-bottom: 20px; }
.zvl-product-card h4 { font-size: 1.15rem; font-weight: 700; color: var(--zvl-text); margin-bottom: 10px; }
.zvl-product-card p { color: var(--zvl-text-2); font-size: .9rem; margin: 0; }

/* Stats / Heatmap */
.zvl-stats { text-align: center; }
.zvl-stats-img { max-width: 100%; height: auto; border-radius: 16px; box-shadow: 0 12px 30px rgba(0,0,0,.1); margin-top: 30px; }

/* Security Topology */
.zvl-security { background: linear-gradient(135deg, var(--zvl-primary-dark) 0%, var(--zvl-primary) 100%); color: #fff; padding: 80px 0; }
.zvl-security .zvl-stitle h2 { color: #fff; }
.zvl-security .zvl-stitle p { color: rgba(255,255,255,.85); }
.zvl-security .zvl-stitle::after { background: linear-gradient(to right, #fff, rgba(255,255,255,.3)); }
.zvl-security-topo { position: relative; max-width: 800px; margin: 0 auto; padding: 50px 20px; }
.zvl-security-center { width: 140px; height: 140px; border-radius: 50%; background: rgba(255,255,255,.15); border: 2px solid rgba(255,255,255,.3); display: flex; align-items: center; justify-content: center; flex-direction: column; margin: 0 auto; backdrop-filter: blur(8px); }
.zvl-security-center i { font-size: 2.5rem; margin-bottom: 8px; }
.zvl-security-center span { font-weight: 600; }
.zvl-security-nodes { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 40px; }
.zvl-security-node { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.15); border-radius: 12px; padding: 24px 20px; backdrop-filter: blur(8px); transition: .3s; }
.zvl-security-node:hover { background: rgba(255,255,255,.15); transform: translateY(-3px); }
.zvl-security-node i { font-size: 1.8rem; color: var(--zvl-accent); margin-bottom: 12px; display: block; }
.zvl-security-node h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.zvl-security-node p { color: rgba(255,255,255,.8); font-size: .85rem; margin: 0; line-height: 1.6; }

/* FAQ Timeline */
.zvl-faq-list { max-width: 800px; margin: 0 auto; position: relative; }
.zvl-faq-list::before { content:''; position: absolute; left: 25px; top: 0; bottom: 0; width: 2px; background: linear-gradient(to bottom, var(--zvl-primary), var(--zvl-accent)); }
.zvl-faq-item { position: relative; padding-left: 70px; margin-bottom: 32px; }
.zvl-faq-num { position: absolute; left: 0; top: 0; width: 52px; height: 52px; border-radius: 50%; background: linear-gradient(135deg, var(--zvl-primary), var(--zvl-accent)); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 1.1rem; box-shadow: 0 6px 18px rgba(0,0,0,.15); }
.zvl-faq-content h4 { font-size: 1.1rem; font-weight: 700; color: var(--zvl-text); margin-bottom: 8px; }
.zvl-faq-content p { color: var(--zvl-text-2); font-size: .92rem; line-height: 1.7; margin: 0; }

/* App Download */
.zvl-app { background: linear-gradient(135deg, var(--zvl-gradient-start), var(--zvl-gradient-end)); padding: 80px 0; color: #fff; position: relative; overflow: hidden; }
.zvl-app::before { content:''; position: absolute; inset: 0; background: rgba(255,255,255,.05); backdrop-filter: blur(2px); }
.zvl-app-content { position: relative; z-index: 2; }
.zvl-app-rating { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,.15); padding: 8px 16px; border-radius: 30px; font-size: .9rem; margin-bottom: 20px; backdrop-filter: blur(8px); }
.zvl-app-rating .stars { color: #FFC107; }
.zvl-app h2 { font-size: 2rem; font-weight: 700; margin-bottom: 16px; line-height: 1.3; }
.zvl-app p { color: rgba(255,255,255,.9); font-size: 1rem; line-height: 1.8; margin-bottom: 20px; }
.zvl-app-tags { display: flex; gap: 10px; margin-bottom: 28px; flex-wrap: wrap; }
.zvl-app-tag { background: rgba(255,255,255,.15); padding: 6px 14px; border-radius: 20px; font-size: .82rem; backdrop-filter: blur(8px); }
.zvl-app-buttons { display: flex; gap: 14px; flex-wrap: wrap; }
.zvl-app-btn-primary { background: rgba(255,255,255,.95); color: var(--zvl-primary); padding: 13px 32px; border-radius: 30px; font-weight: 600; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; transition: .3s; }
.zvl-app-btn-primary:hover { background: #fff; color: var(--zvl-primary); transform: translateY(-2px); box-shadow: 0 10px 25px rgba(0,0,0,.2); }
.zvl-app-btn-outline { background: transparent; color: #fff; padding: 13px 32px; border-radius: 30px; font-weight: 600; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; border: 1px solid rgba(255,255,255,.5); transition: .3s; }
.zvl-app-btn-outline:hover { background: rgba(255,255,255,.15); color: #fff; transform: translateY(-2px); }

/* News */
.zvl-news-list { max-width: 900px; margin: 0 auto; }
.zvl-news-item { display: flex; gap: 20px; padding: 20px; background: #fff; border-radius: 12px; border: 1px solid var(--zvl-border); margin-bottom: 16px; transition: .3s; }
.zvl-news-item:hover { box-shadow: 0 10px 30px rgba(0,0,0,.1); transform: translateY(-2px); border-color: var(--zvl-primary); }
.zvl-news-thumb { width: 180px; min-width: 180px; height: 120px; border-radius: 10px; background: linear-gradient(135deg, var(--zvl-primary), var(--zvl-accent)); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 2.5rem; }
.zvl-news-body { flex: 1; }
.zvl-news-body h4 { font-size: 1.05rem; font-weight: 700; color: var(--zvl-text); margin-bottom: 8px; line-height: 1.5; }
.zvl-news-body .summary { color: var(--zvl-text-2); font-size: .88rem; line-height: 1.6; margin-bottom: 12px; }
.zvl-news-meta { display: flex; justify-content: space-between; align-items: center; }
.zvl-news-date { color: var(--zvl-text-2); font-size: .82rem; }
.zvl-news-btn { color: var(--zvl-primary); font-size: .85rem; font-weight: 600; text-decoration: none; }
.zvl-news-btn:hover { text-decoration: underline; }

/* Footer */
.zvl-footer { background: linear-gradient(to right, #1c1f3f, #3d0b40); color: rgba(255,255,255,.85); padding: 60px 0 30px; }
.zvl-footer h5 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 18px; }
.zvl-footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.zvl-footer-brand .logo-icon { width: 40px; height: 40px; border-radius: 10px; background: linear-gradient(135deg, var(--zvl-primary), var(--zvl-accent)); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-weight: 700; font-size: 1.1rem; }
.zvl-footer-brand .logo-text { font-size: 1.1rem; font-weight: 700; color: #fff; }
.zvl-footer-about { color: rgba(255,255,255,.7); font-size: .88rem; line-height: 1.7; margin-bottom: 18px; }
.zvl-footer-contact { color: rgba(255,255,255,.7); font-size: .88rem; line-height: 1.9; }
.zvl-footer-contact i { color: var(--zvl-accent); margin-right: 8px; width: 16px; }
.zvl-footer-links { list-style: none; padding: 0; margin: 0; }
.zvl-footer-links li { margin-bottom: 10px; }
.zvl-footer-links a { color: rgba(255,255,255,.7); font-size: .88rem; text-decoration: none; transition: .3s; }
.zvl-footer-links a:hover { color: var(--zvl-accent); padding-left: 4px; }
.zvl-footer-divider { border-top: 1px solid rgba(255,255,255,.1); margin: 30px 0 20px; padding-top: 20px; text-align: center; color: rgba(255,255,255,.5); font-size: .85rem; }

/* Mobile responsive */
@media (max-width: 768px) {
  .zvl-hero h1 { font-size: 1.7rem; }
  .zvl-security-nodes { grid-template-columns: 1fr; }
  .zvl-news-item { flex-direction: column; }
  .zvl-news-thumb { width: 100%; min-width: 100%; height: 160px; }
}